CN105036597B - Friction reducer and the method for reducing the haydite floating degree in pumping haydite concrete are floated in a kind of haydite suppression - Google Patents
Friction reducer and the method for reducing the haydite floating degree in pumping haydite concrete are floated in a kind of haydite suppression Download PDFInfo
- Publication number
- CN105036597B CN105036597B CN201510440662.5A CN201510440662A CN105036597B CN 105036597 B CN105036597 B CN 105036597B CN 201510440662 A CN201510440662 A CN 201510440662A CN 105036597 B CN105036597 B CN 105036597B
- Authority
- CN
- China
- Prior art keywords
- haydite
- floating
- suppression
- concrete
- friction reducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of floating friction reducer of haydite suppression and the method for reducing the haydite floating degree in pumping haydite concrete.The method that the detection that the present invention provides characterizes the haydite floating index of haydite floating degree, using inverting the treatment measures vibrated, is inverted the secondary method beaten, simple and quick, credible result degree is high.The floating friction reducer of haydite suppression that the present invention provides; and it is applied to the method reducing the haydite floating degree in pumping haydite concrete; pumping resistance can effectively be reduced; improve pumping lubricant effect; improve pump rate; reduce pumping pressure, the slump of haydite concrete of the floating friction reducer of admixture haydite suppression is not less than 90% with the percentage ratio of the slump of haydite concrete not filling the floating friction reducer of haydite suppression.
Description
Technical field
The invention belongs to the detection method field of haydite concrete preparation control technology and haydite concrete service behaviour, one
Plant the floating friction reducer of haydite suppression and for reducing the method pumping the haydite floating degree in haydite concrete.
Background technology
The continuous lifting energy-conserving and environment-protective of building being required with country, increasing building construction flooring ground design
For lightweight concrete, for mitigating deadweight, and play the effect of heat preserving heat insulating noise insulation.Haydite concrete has well as one kind
Insulation, heat-insulated, sound insulation value lightweight concrete, are widely applied in architectural engineering step by step, but due to as thick
The haydite density of aggregate is little（Apparent density is generally no greater than 1500kg/m3）, haydite with gelling slurry there is larger density contrast,
Thus, when concrete batching, when particularly preparing the high flowability concrete meeting pumping, because haydite density is little, in fortune
Be easy to, in defeated, pumping and casting process, the isolation that floats, cause haydite pump not up, stifled pump, cannot be carried out pumping and pour applying
Work.
Currently, the technical data about haydite concrete all refer to haydite concrete and there is haydite floating isolation problem,
Propose characterize anti-layering, " delamination degree " this technical specification of anti-isolation and detection delamination degree method it is noted that for
The delamination degree that one haydite concrete sample, different concrete vibrating modes and vibrating time, different time of repose mensure draw is poor
Different larger, the larger diversity of the appearance of the haydite floating degree that artificial charging, the random sex differernce vibrating often result in, press
The delamination degree that the delamination degree detection method of more solito draws exist larger discreteness, detection error also larger, at present, do not have
Effective measures reduce this operating error.
For solving the problems, such as haydite floating isolation, the technical data about haydite concrete proposes some potteries of such as prewetting
Grain, increase gel material content, reduction water-cement ratio, admixture admixture（Flyash etc.）, and add additive etc. and prevent haydite
Conventional method with mortar segregation.The suppression haydite floating isolation that the technical data of current relevant haydite concrete is previously mentioned is asked
Inscribe added thickening type additive and only serve and improve the viscous resistance of the slurry that is gelled in concrete, reduce haydite in coagulation
The effect of the buoyancy in native mixture, often brings the inefficacy of water reducer fluid effect, coagulation to concrete water mud thickening
The unfavorable factors such as native mobility is greatly reduced, pumping resistance increase, such as find adding of fiber element ether, sodium polyacrylate through test
Often cause that the fluid effect of water reducer lost efficacy, concrete flowability is greatly reduced, pumping resistance increases Deng conventional viscosifier
Plus, cannot pumping construction the problems such as.
The reason lead to haydite to float, in addition to there is this subject matter of larger density contrast with gelling slurry in haydite,
Performance, the slump prepared also with gelling slurry itself（Mobility）Closely related, and the pumpability of haydite concrete
Closely related with mobility under pumping pressure for the haydite concrete, cohesiveness, stability and homogeneity.Show through overtesting：
Binder Materials, coarse aggregate, the description of fine aggregate and consumption constant on the premise of, the slump of haydite concrete is bigger
（I.e. mobility is bigger）, gelling slurry viscous resistance less, gelling slurry also relatively poorer to the parcel power of haydite, haydite mix
In solidifying soil, the degree of haydite floating isolation is higher, and the stability of haydite concrete and homogeneity are poorer；Conversely, haydite concrete
The slump is less（I.e. mobility is poorer）, gelling slurry viscous resistance bigger, gelling slurry is to the parcel power of haydite also relatively
Better, in haydite concrete, the degree of haydite floating isolation is less, and the stability of haydite concrete and homogeneity are better；Thus,
Prepare the good haydite concrete of pump-conveying property it is necessary to accomplish the floating contradiction unification with concrete flowability of haydite suppression, accomplish glue
The thickening of solidifying slurry and fall hinder the contradiction unification of lubricity.
At present, there is no and study for the not side effect to thickening type additive, also not to viscosifying action with
The research of the adaptability problem of pumping construction and the solution of feasibility；In actual applications often with pump journey and pump pressure
Increase, the mobility of haydite concrete, cohesiveness, stability and homogeneity are put forward higher requirement, there is no for relevant
The floating discussion of contradiction reunification and the research that viscosify with fall resistance lubricity with concrete flowability, gelling slurry of haydite suppression,
Do not propose to characterize the treatment measures that the particular technique of haydite floating isolation degree requires and quantifies（Such as viscosifier with fluidity
Quantitative relationship formula with anti-isolation）It is impossible to qualitative and quantitative measurement result and amount are given to the pumpability of haydite concrete
Change treatment measures, detection before leading to pump is checked and accepted and larger error, and directiveness is poor, increases haydite concrete and blocks up the several of pump
Rate.
Content of the invention
The present invention is directed to the above-mentioned problems in the prior art, there is provided friction reducer is floated in a kind of haydite suppression and one kind is used for
The method reducing the haydite floating degree in pumping haydite concrete, haydite suppression of the present invention is floated friction reducer and is used in haydite concrete
The effect of thickening, fall resistance and auxiliary diminishing can be reached；Provided by the present invention for reducing the haydite in pumping haydite concrete
The method of floating degree, includes the method for mensure haydite concrete floating isolation degree, haydite suppression is floated the formula of friction reducer, mixed
Amount computing formula and adding method.Can solve to float with concrete flowability, be gelled slurry in haydite suppression by the inventive method
Thickening and the contradiction reunification of fall resistance lubricity, disclosure satisfy that the big flowing of the haydite concrete required by elevation pumping construction
Property（The slump >=200mm）, good stability and homogeneity（Haydite floating index λ TL≤5%）, cohesiveness is good, pumping resistance
Low, pumping lubrication smoothly technical requirements.
In order to reach the effect of thickening, fall resistance and auxiliary diminishing, the floating friction reducer of haydite of the present invention suppression include adhesion promoting component,
Lubrication fall resistance component and auxiliary diminishing component.
Haydite suppression of the present invention floats friction reducer it is characterised in that being become by the mixed raw material of following weight parts：Polyethylene Glycol 55
～85 parts, 3～9 parts of xanthan gum, vinylacetate and ethylene copolymer rubber powder（Vac/E rubber powder）8～15 parts, 5～13 parts of dextrin, gathers
15～36 parts of sodium acrylate, alkali swelling type acrylate copolymer（DSXAS）6～15 parts, 2～9 parts of polyvinyl alcohol, triethanolamine
3～13 parts, 12～22 parts of Sorbitol, 5～13 parts of erythritol, 2～8 parts of triterpenoid saponin, 0.5～3 part of potassium hydroxide, hydroxide
1.2～5 parts of sodium.
Further, the mean molecule quantity grade of described Polyethylene Glycol is 6000；Described sodium polyacrylate average
Molecular weight grade is 4000；Described polyvinyl alcohol, preferably PVA-1788, the degree of polymerization is 1700, and alcoholysis degree is 88%.
A kind of method for reducing the haydite floating degree in pumping haydite concrete is it is characterised in that include following
Step：
1）Measure the haydite floating index of haydite concrete sample：
ⅰ）The instrument measuring the haydite floating index of haydite concrete sample adopts haydite floating index to detect cylinder, described
Haydite floating index detects cylinder：Including the square-shaped metal cylinder of the mutual UNICOM of upper and lower two-layer, detect that cylinder upper/lower terminal nozzle divides
It is not provided with metal cover board；Take haydite concrete sample to be measured, mix uniformly, loads in haydite floating index detection cylinder, will detect
In cylinder, the haydite concrete sample of upper and lower two-layer plugs and pounds jolt ramming respectively, then smears haydite concrete sample along detection cylinder nozzle
Flat, then will detect that cylinder seals, it is inverted, keep flat, more symmetrically and evenly rapped 40 times along around inverted drum outer wall with rubber hammer, shake
Real, then the metal cover board positioned at upper end is opened, stand 30～60min；
ⅱ）After standing finishes, take out the haydite concrete sample that haydite floating index detects upper and lower two-layer in cylinder respectively,
It is rinsed in the square hole screen proceeding to a diameter of 5mm, picks out haydite therein, be dried to constant weight, weigh, respectively obtain haydite
Haydite quality m in the haydite concrete sample of floating index detection cylinder upper stratat1With haydite quality in lower floor haydite concrete sample
mt2, then calculate haydite floating index λTL, calculating formula such as formula is 1. shown：
λTL= (mt1- mt0)/ mt0×100% ；Formula 1.,
Formula 1. in：λTLHaydite floating index, calculates and is accurate to 0.1%；mt1The haydite that upper part concrete sifts out
Quality, g；mt2The haydite quality that lower part concrete sifts out, g；mt0—mt1And mt2Meansigma methodss, g；
2）The haydite floating degree of haydite concrete is evaluated：According to step 1）The haydite concrete sample of middle mensure
Haydite floating index, judge whether haydite concrete meets pumping construction requirement, criterion is：When haydite floating index≤
When 5%, haydite concrete meets pumping construction requirement；When haydite floating index>When 5%, haydite concrete does not meet pumping construction
Require；
3）The haydite concrete not meeting pumping construction requirement is carried out with haydite suppression floating fall resistance process：
ⅰ）Prepare the floating friction reducer of haydite suppression：Weigh raw material Polyethylene Glycol, xanthan gum, vinylacetate and ethylene by proportioning altogether
Poly- rubber powder, dextrin, sodium polyacrylate, alkali swelling type acrylate copolymer, polyvinyl alcohol, triethanolamine, Sorbitol, erythrose
Alcohol, triterpenoid saponin, potassium hydroxide and sodium hydroxide, mix homogeneously, standby；
ⅱ）Determine the volume of the floating friction reducer of haydite suppression：According to step 1）On the haydite of haydite concrete sample of middle mensure
Floating index λTLWith preparation slump SL of haydite concrete, calculate the volume β of the floating friction reducer of haydite suppressionYF, calculating formula such as formula is 2.
Described：
βYF=（λTL- 5%）×0.01 +（SL-80）×0.01%/20；Formula 2.,
Formula 2. in：βYFFor the floating friction reducer volume of haydite suppression, calculate and be accurate to 0.01%；λTLFor haydite floating index, essence
Really to 0.1%；SL is the preparation slump of haydite concrete, and unit mm is accurate to 1mm；
ⅲ）Determine the floating friction reducer addition of haydite suppression：Described haydite suppression is floated friction reducer volume and is added for the floating friction reducer of haydite suppression
Enter the quality percentage that amount accounts for Binder Materials in haydite concrete sample, according to the volume β of the floating friction reducer of haydite suppressionYFValue and haydite
The quality of Binder Materials in concrete sample, is calculated the floating friction reducer addition of haydite suppression, and the addition by calculating weighs pottery
The floating friction reducer of grain suppression, mixes in haydite concrete, mixing and stirring, mixing time 2～5min；
4）To step 3）Haydite concrete sub-sampling again after middle haydite suppression floating fall resistance process, detects its haydite floating index
With the actual slump, judge whether to meet pumping construction requirement, criterion is：The haydite of the haydite concrete 1. detecting floats
Index is not more than 5%；The error of the actual measurement slump of the haydite concrete 2. detecting and the preparation slump is in the range of ± 10%；When
Meet simultaneously above-mentioned standard 1. 2. when, the haydite concrete after haydite suppression floating fall resistance is processed meets pumping construction and requires, if discontented
1. sufficient above-mentioned standard 2. for the moment, does not then meet pumping construction requirement；
The haydite suppression floating fall resistance adjustment that carries out not meeting pumping construction requirement is processed：According to the floating friction reducer volume of haydite suppression
Method of adjustment, calculates the volume β of the floating friction reducer of haydite suppression after adjustmentYF2, then according to volume βYF2Value and haydite concrete examination
The quality of Binder Materials in sample, calculates the floating friction reducer addition of haydite suppression, weighs the floating friction reducer of haydite suppression by addition, mixes pottery
In grain concrete, mixing and stirring, repeat step 4）, until haydite concrete meets pumping construction requirement, simultaneously in satisfaction
State standard 1. 2.；
Friction reducer volume method of adjustment is floated in described haydite suppression, is the volume calculating in front haydite suppression floating fall resistance process
βYF1On the basis of the adjustment of further volume, the volume β of the floating friction reducer of haydite suppression after adjustmentYF2Calculating formula such as formula is 3. shown：
βYF2=βYF1+△βYF；Formula 3.,
Formula 3. in：βYF2For the floating friction reducer volume of haydite suppression after adjustment, calculate and be accurate to 0.01%；βYF1Before adjustment
The floating friction reducer volume of haydite suppression, be accurate to 0.01%；△βYFFor haydite suppression floating friction reducer adjustment volume, it is accurate to 0.01%；
Formula 3. in haydite suppression floating friction reducer adjustment volume △ βYFCalculating formula such as formula 4. shown：
△βYF=（λTL1- λTL2）×0.01+（SL2- SL1）×0.01%/20；Formula 4.,
Formula 4. in：△βYFFor haydite suppression floating friction reducer adjustment volume, calculate and be accurate to 0.01%；λTL1At suppression floating fall resistance
Haydite floating index before reason, is accurate to 0.01%；λTL2Haydite floating index after processing for suppression floating fall resistance, is accurate to 0.01%；
SL1For the haydite concrete slump of suppression floating fall resistance before processing, unit mm, it is accurate to 1mm；SL2Pottery after processing for suppression floating fall resistance
Grain concrete slump, unit mm, it is accurate to 1mm.
Preferably, step 1）In,）Described haydite floating index detects cylinder, and the metal cylinder inwall square length of side is
200mm, every layer height is 100mm, and wall thickness is 5mm, and metal cylinder upper and lower two-layer volume is equal, detachable；Described pottery
Grain floating index detection cylinder, upper and lower two-layer junction is provided with fluid sealant leather packing, upper/lower terminal opening and upper and lower port crown cap
Plate and upper and lower two-layer junction, are equipped with the moving fastening for being fixedly connected.
Preferably, step 1）In,）When described haydite concrete sample loads in haydite floating index detection cylinder, mix
Solidifying soil sample exceeds nozzle 5mm.
Preferably, step 1）In,）When in described detection cylinder, the concrete sample of upper and lower two-layer plugs and pounds jolt ramming respectively,
Every layer of number of times plugging and pounding is 20 times；Plugging and pounding jolt ramming mode is：Tamper is plugged and pounded from edge to center convolution, plugs and pounds tamper during lower floor
Bilevel haydite concrete sample should be run through, when plugging and pounding upper strata, tamper should be inserted through upper strata haydite concrete sample to lower floor
Concrete sample upper surface, each layer plugs and pounds and is symmetrically and evenly rapped 20 times along drum outer wall surrounding with rubber hammer after finishing, jolt ramming, extremely
In haydite concrete sample, the hole that plugs and pounds on no air pocket and surface disappears.
Preferably, step 1）In,）During the haydite density rating ＜ 700 of described haydite concrete sample, time of repose
30min；During haydite density rating >=700 of haydite concrete sample, time of repose 60min.
Preferably, step 1）In,）Described drying is that blast drier is dried in 105 ± 5 DEG C.
Step 1）In, the haydite floating assessment of indices method of described haydite concrete sample is applied to haydite maximum particle diameter
The mensure of the haydite floating index of the haydite concrete of≤25mm.
Step 2）In, when haydite floating index is 5%, it is the haydite stable equilibrium point detecting, that is, in haydite concrete
Haydite buoyancy glues, from gravity and gelling slurry, the point that resistance reaches balance with haydite；
The volume calculating formula of friction reducer is floated in the above-mentioned haydite suppression that the present invention is given, and its foundation is：
1. the floating friction reducer volume of haydite suppression is bigger, and the ability that suppression haydite floats is bigger, thus, haydite floating index is got over
Greatly, need the increased floating friction reducer volume of haydite suppression bigger；In haydite concrete while the slump increases, haydite floats and isolates
Degree bigger, thus, the slump is bigger, needs the increased floating friction reducer volume of haydite suppression also bigger.2. formula is to merge
The one of the change of the floating friction reducer volume of haydite suppression required for change of haydite floating index and this 2 factors of the slump prepared
Individual weight-sets are fit, thus, accomplish the floating contradiction unification with concrete flowability of haydite suppression.
2. by haydite floating index for 5% be considered as haydite buoyancy and haydite from gravity and gelling slurry glue resistance reach flat
Weighing apparatus, i.e. haydite stable equilibrium point, in this, as basis of reference, and by " haydite floating index λTL≤ 5% " as pumping haydite coagulation
One of technical requirements of pumpability；As haydite floating index λTLDuring ＞ 5%, float friction reducer volume β using 0.01 as haydite suppressionYFIncrease
Plus radix, with（λTL- 5%）As the floating friction reducer volume β of haydite suppressionYFIncreased multiple.
3. under normal circumstances when prepare the slump SL=80mm when, haydite concrete due to mobility too small, haydite
Floating lesser extent, disclosure satisfy that technical requirements substantially, can be used as basis of reference；As the slump SL ＞ 80mm preparing, with
0.01%/20 as the floating friction reducer volume β of haydite suppressionYFIncreased radix, with（SL-80）As the floating friction reducer volume of haydite suppression
βYFIncreased multiple.
The present invention is used for the method reducing the haydite floating degree in pumping haydite concrete, includes mensure haydite coagulation
The method of native floating isolation degree, the floating friction reducer volume computing formula of haydite suppression and adding method.On the mensure haydite of the present invention
The method and technology approach of floating degree is mainly the haydite floating index measuring haydite concrete sample, by reducing because of artificial dress
The diversity of the haydite floating degree that material, the random sex differernce vibrating cause, makes testing result more accurate, operation of vibrating can not
The floating promoting haydite that avoids but Main Function is to exclude the bubble in haydite concrete to reach closely knit effect, should
Reduce the impact to haydite floating degree for the operation of vibrating as far as possible, the floating of haydite was controlled in the standing stage, so contributes to carrying
The high accuracy of haydite floating level determinations, thus, the present invention is in the method measuring haydite floating degree, on the one hand, will
The haydite floating index filling haydite concrete detects that cylinder is inverted the haydite originally floating when making charging vibrate and is inverted on haydite
Floating index detects cylinder bottom, then carries out secondary beaing and vibrate, and the randomness so contributing to reducing because of artificial charging, vibrating is poor
The different impact to haydite floating degree, thus realizing standing the initial time of phase in haydite concrete, haydite divides in concrete
Cloth state reaches unanimity substantially；On the other hand it is contemplated that the difference of the buoyancy of the haydite of different densities grade and ascent rate,
The present invention according to the principle that haydite density rating is less, buoyancy is bigger, to float to time needed for same degree fewer, for
The different densities grade of haydite is made that different regulations to time of repose, and the affluence having allowed also for time of repose is asked
Inscribe it is generally the case that as haydite density rating ＜ 700, after standing 30min, the floating layering of haydite is basic stops terminating, when
During haydite density rating >=700, after standing 60min, the floating layering of haydite is basic stops terminating；The present invention passes through these two aspects
Technological means, decrease the evaluated error of haydite floating degree and the discreteness of testing result.
A kind of method for reducing the haydite floating degree in pumping haydite concrete of the present invention, with respect to existing skill
Art, its advantage is：
1st, the method that the detection that the present invention provides characterizes the haydite floating index of haydite floating degree, simple and quick,
Credible result degree is high, using inverting the treatment measures vibrated, is inverted the secondary method beaten, effectively reduce because artificial charging,
The error of detection of haydite floating degree and discreteness that the random sex differernce vibrating causes, it is ensured that result accuracy, measure
Result group internal standard deviation is not more than the 7% of meansigma methodss.
2nd, give when haydite floating index is≤5%, haydite concrete disclosure satisfy that the judgement mark of pumping construction requirement
One of standard, by the detection of haydite floating index and judgement, it is possible to decrease the stifled pump rate about 70% of pumping haydite concrete and reducing
The economic loss causing because of stifled pump.
3rd, the floating friction reducer of haydite suppression that the present invention provides, and it is applied to the haydite reducing in pumping haydite concrete
The method of floating degree, can effectively reduce pumping resistance, improve pumping lubricant effect, improve pump rate, reduce pumping pressure,
The slump of haydite concrete of the floating friction reducer of admixture haydite suppression is collapsed with the haydite concrete not filling the floating friction reducer of haydite suppression
The percentage ratio of degree of falling is not less than 90%.
Brief description
Fig. 1 is that haydite floating index detects barrel structure schematic diagram,
In figure：1st, upper strata metal cylinder, 2, lower metal cylinder, 3, metal cover board, 4, fluid sealant leather packing, 5, moving fastening, 6,
Haydite concrete；
Fig. 2 is used for reducing the method flow diagram of the haydite floating degree in pumping haydite concrete for the present invention.
Specific embodiment
With reference to specific embodiment, further illustrate technical solution of the present invention and beneficial effect.
Embodiment 1：The haydite floating assessment of indices method of the present invention, and with conventional layering measuring method Contrast on effect
1st, LC7.5 pumping haydite concrete match ratio, haydites of book structure density rating is 700kg/m3, it is shown in Table 1.
Table 1 LC7.5 pumps haydite concrete match ratio
2nd, the haydite floating assessment of indices method of the present invention
1）The instrument measuring the haydite floating index of haydite concrete sample adopts haydite floating index to detect cylinder, described
Haydite floating index detects cylinder（See Fig. 1）：Including the square-shaped metal cylinder of the mutual UNICOM of upper and lower two-layer, i.e. upper strata metal cylinder 1 He
Lower metal cylinder 2, detection cylinder upper/lower terminal nozzle is respectively equipped with metal cover board 3, and the metal cylinder inwall square length of side is 200mm,
Every layer height is 100mm, and wall thickness is 5mm, and metal cylinder upper and lower two-layer volume is equal, detachable；Described haydite floats
Index detects cylinder, and upper and lower two-layer junction is provided with fluid sealant leather packing 4, upper/lower terminal opening and upper and lower port metal cover board with
And upper and lower two-layer junction, it is equipped with the moving fastening 5 for being fixedly connected, i.e. bolt；
Take haydite concrete sample to be measured, haydite concrete sample size should not be less than 20 liters, mix uniformly, loads haydite
In floating index detection cylinder, concrete sample exceeds nozzle 5mm, and the haydite concrete sample of upper and lower two-layer in detection cylinder is divided
Do not plug and pound jolt ramming, every layer of number of times plugging and pounding is 20 times；Plugging and pounding jolt ramming mode is：Tamper is plugged and pounded from edge to center convolution, inserts
Smash tamper during lower floor and should run through bilevel haydite concrete sample, when plugging and pounding upper strata, tamper should be inserted through upper strata haydite coagulation
To lower-layer concrete sample upper surface, each layer plugs and pounds and is symmetrically and evenly rapped along drum outer wall surrounding with rubber hammer after finishing soil sample
20 times, jolt ramming, to haydite concrete sample, the hole that plugs and pounds on no air pocket and surface disappears；Then by haydite concrete sample edge
Detection cylinder nozzle is floating, then will detect that cylinder seals, and is placed on smooth ground, is inverted, keeps flat, then with rubber hammer along inverted cylinder
Symmetrically and evenly rap around outer wall 40 times, jolt ramming, then the metal cover board positioned at upper end is opened, stand 60min；
2）After standing finishes, take out the haydite concrete sample that haydite floating index detects upper and lower two-layer in cylinder respectively, turn
It is rinsed in the square hole screen entering a diameter of 5mm, picks out haydite therein, blast drier, in 105 ± 5 DEG C to constant weight, claims
Amount, respectively obtains haydite quality m in the haydite concrete sample of haydite floating index detection cylinder upper stratat1With lower floor's haydite concrete examination
Haydite quality m in samplet2, then calculate haydite floating index λTL, calculating formula such as formula is 1. shown：
λTL= (mt1- mt0)/ mt0×100% ；Formula 1.,
Formula 1. in：λTLHaydite floating index, calculates and is accurate to 0.1%；mt1The haydite that upper part concrete sifts out
Quality, g；mt2The haydite quality that lower part concrete sifts out, g；mt0—mt1And mt2Meansigma methodss, g；
The sample size measuring is 35 groups, the grain pressured bleeding sample number of mensure is occupied and carries out statistical computation, be shown in Table 2.
3rd, conventional layering measuring method
Conventional layering measuring method is voluntarily processed using delamination degree test apparatuses, a diameter of 200mm, upper,
In, lower three layers be interconnected, height be all lOOmm steel cylinder.During test, concrete mix is loaded punching block, using routine
Concrete vibrating stand vibrated, frequency of vibration be 50Hz, Oscillation Amplitude be 0.5mm, time of vibration be 30s, after vibrating,
Take out upper and lower layer mixture respectively, be respectively charged into the square hole screen that screen size is 4.75mm, wash away clean cement mortar with water,
Choose the haydite in mixture, after drying, measure quality g of haydite in upper mixture respectivelyuMatter with haydite in lower floor mixture
Amount gl.Coarse aggregate mass segregation degree λFRatio with coarse aggregate average quality of poor quality for upper and lower layer coarse aggregate；Delamination degree is lower,
Represent that the homogeneity of mixture is better, illustrate that the anti-layering of mixture, education resistance can be better；Coarse aggregate mass segregation degree λFMeter
Formula such as formula is 5. shown：
λF=2（gu- gl）/（gu+ gl）×100%；Formula 5.,
Formula 5. in：λFCoarse aggregate mass segregation degree, calculates and is accurate to 0.1%；guThe pottery that upper part concrete sifts out
Grain quality, g；glThe haydite quality that lower part concrete sifts out, g.
The sample size measuring is 35 groups, the grain pressured bleeding sample number of mensure is occupied and carries out statistical computation, be shown in Table 2.
4th, the mensure Contrast on effect analysis of two methods
The determination data statistics of two methods and Contrast on effect analysis, are shown in Table 2；
The result statistical analysis table of the haydite floating degree that two methods of table 2 measure
As shown in Table 2：With the haydite of a collection of same kind, the coarse aggregate mass segregation degree sample conventionally measuring
Standard deviation（For 2.9%, account for the 10.3% of meansigma methodss）It is significantly larger than the haydite pressure water absorption rate sample measuring according to the inventive method
This standard deviation（For 0.8%, account for the 5.6% of meansigma methodss）, this mainly due to charge time, maneuver inconsistent, in the platform that vibrates
The diversity of the haydite floating degree that the random sex differernce of the manual operations such as placement location difference causes, leads to measurement result error
Greatly, measured value is low, dispersion is high, standard deviation is larger, strong authentication the inventive method novelty secondary using being inverted
Beat method, reduce the impact to haydite floating degree for the operation of vibrating as far as possible, the floating of haydite controlled in the standing stage,
And reasonable selection time of repose, effectively eliminate this operating error, substantially increase the accuracy of measurement result, substantially reduce
The test standard deviation of measurement result.
Embodiment 2：Haydite suppression floats friction reducer formula 1 and its for reducing the haydite floating degree in pumping haydite concrete
Compliance test result
1st, LC10 pumping haydite concrete match ratio, the preparation slump is 200mm, is shown in Table 3.
Table 3 LC10 pumps haydite concrete match ratio
2nd, the detection of haydite floating index and evaluation
Haydite floating index detection method, with embodiment 1 detection method, is the haydite concrete of table 3 to proportioning
The testing result of haydite floating index is 15.1%；
The haydite floating degree of the haydite concrete of table 3 is evaluated：According to the haydite floating index measuring, judge pottery
Whether grain concrete meets pumping construction requirement, and criterion is：When haydite floating index≤5%, haydite concrete meets pump
Send construction requirement；When haydite floating index>When 5%, haydite concrete does not meet pumping construction requirement, judges the pottery as table 3 for the proportioning
The haydite floating index index of grain concrete is unqualified.
3rd, the haydite concrete of table 3 is carried out with haydite suppression floating fall resistance process
1）The floating friction reducer formula 1 of haydite suppression
The floating friction reducer formula 1 of haydite suppression, is shown in Table 4
The floating friction reducer formula 1 of table 4 haydite suppression
Prepare the floating friction reducer of haydite suppression：Weigh above-mentioned each raw material by table 4 proportioning, mix homogeneously, standby；
2）Determine the volume of the floating friction reducer of haydite suppression：According to step 1）The haydite of the haydite concrete sample of middle mensure floats
Index λTLWith preparation slump SL of haydite concrete, calculate the volume β of the floating friction reducer of haydite suppressionYF, calculating formula such as formula 2. institute
State：
βYF=（λTL- 5%）×0.01 +（SL-80）×0.01%/20；Formula 2.,
Formula 2. in：βYFFor the floating friction reducer volume of haydite suppression, calculate and be accurate to 0.01%；λTLFor haydite floating index, essence
Really to 0.1%；SL is the preparation slump of haydite concrete, and unit mm is accurate to 1mm；
Known：The preparation slump is 200mm, and haydite floating index is 15.1%, is computed：The floating friction reducer volume of haydite suppression
βYFFor 0.16%.
3）Determine the floating friction reducer addition of haydite suppression：It is that the floating friction reducer of haydite suppression adds that friction reducer volume is floated in described haydite suppression
Amount accounts for the quality percentage of Binder Materials in haydite concrete sample, according to the volume β of the floating friction reducer of haydite suppressionYFValue and haydite mix
The quality of Binder Materials in solidifying soil sample, be calculated the floating friction reducer addition of haydite suppression it is known that：Gel material content is
450kg/m3, the floating friction reducer volume β of haydite suppressionYF（Account for the percentage rate of Binder Materials quality）For 0.16%, according to 0.16% volume meter
It is 0.72kg/m that calculation obtains the floating friction reducer consumption of haydite suppression3, the addition by calculating weighs haydite suppression and floats friction reducer, mixes haydite
In concrete, mixing and stirring, mixing time 3min；
4）To step 3）Haydite concrete sub-sampling again after middle haydite suppression floating fall resistance process, detects its haydite floating index
With the actual slump, judge whether to meet pumping construction requirement, criterion is：The haydite of the haydite concrete 1. detecting floats
Index is not more than 5%；The error of the actual measurement slump of the haydite concrete 2. detecting and the preparation slump is in the range of ± 10%；When
Meet simultaneously above-mentioned standard 1. 2. when, the haydite concrete after haydite suppression floating fall resistance is processed meets pumping construction and requires, if discontented
1. sufficient above-mentioned standard 2. for the moment, does not then meet pumping construction requirement；
Step 3）Haydite concrete after middle haydite suppression floating fall resistance process, detects to obtain actual slump 180mm, haydite floats
The testing result of index is 6.8% ＞ 5%, still unqualified, need to carry out haydite suppression floating fall resistance adjustment and process, enterprising on former volume basis
One successive step volume；
Haydite suppression floating fall resistance adjustment is processed：According to the floating friction reducer volume method of adjustment of haydite suppression, calculate the haydite after adjustment
The volume β of the floating friction reducer of suppressionYF2, then according to volume βYF2The quality of Binder Materials in value and haydite concrete sample, calculates pottery
The floating friction reducer addition of grain suppression, weighs the floating friction reducer of haydite suppression by addition, mixes in haydite concrete, mixing and stirring,
Repeat step 4）, until haydite concrete meets pumping construction requirement, meet above-mentioned standard 1. 2. simultaneously；
Friction reducer volume method of adjustment is floated in described haydite suppression, is the volume calculating in front haydite suppression floating fall resistance process
βYF1On the basis of the adjustment of further volume, the volume β of the floating friction reducer of haydite suppression after adjustmentYF2Calculating formula such as formula is 3. shown：
βYF2=βYF1+△βYF；Formula 3.,
Formula 3. in：βYF2For the floating friction reducer volume of haydite suppression after adjustment, calculate and be accurate to 0.01%；βYF1Before adjustment
The floating friction reducer volume of haydite suppression, be accurate to 0.01%；△βYFFor haydite suppression floating friction reducer adjustment volume, it is accurate to 0.01%；
Formula 3. in haydite suppression floating friction reducer adjustment volume △ βYFCalculating formula such as formula 4. shown：
△βYF=（λTL1- λTL2）×0.01+（SL2- SL1）×0.01%/20；Formula 4.,
Formula 4. in：△βYFFor haydite suppression floating friction reducer adjustment volume, calculate and be accurate to 0.01%；λTL1At suppression floating fall resistance
Haydite floating index before reason, is accurate to 0.01%；λTL2Haydite floating index after processing for suppression floating fall resistance, is accurate to 0.01%；
SL1For the haydite concrete slump of suppression floating fall resistance before processing, unit mm, it is accurate to 1mm；SL2Pottery after processing for suppression floating fall resistance
Grain concrete slump, unit mm, it is accurate to 1mm.
Known：Haydite floating index λ before adjustmentTL1For 15.1%, the haydite floating index λ that suppression floating fall resistance is processedTL2For
6.8%, haydite concrete slump SL of suppression floating fall resistance before processing1For 200mm, press down the haydite concrete after the resistance of floating fall is processed and collapse
Degree of falling SL2For 180mm, the floating friction reducer volume β of haydite suppression before adjustmentYF1For 0.16%, calculate：The floating friction reducer of haydite suppression
Adjustment volume △ βYFFor 0.07%；Calculate：The floating friction reducer volume β of haydite suppression after adjustmentYF2For 0.23%.
In haydite concrete, gel material content is 450kg/m3, it is calculated haydite suppression floating fall resistance according to 0.23% volume
Agent consumption is 1.03kg/m3, then will be uniformly mixed in floating for haydite suppression friction reducer incorporation concrete, mixing time is 3min.
5）Compliance test result
Repeat step 4）, to the haydite concrete sub-sampling again after haydite suppression floating fall resistance adjustment process, detect on its haydite
Floating index and the actual slump, the actual slump is 205mm, and the testing result of haydite floating index is 4.3%, meets pumping and applies
Work requires, and meets standard 1. 2. simultaneously.
Embodiment 3：Haydite suppression floats friction reducer formula 2 and its for reducing the haydite floating degree in pumping haydite concrete
Compliance test result
1st, LC15 pumping haydite concrete match ratio, the preparation slump is 220mm, is shown in Table 5.
Table 5 LC15 pumps haydite concrete match ratio
2nd, the detection of haydite floating index and evaluation
Haydite floating index detection method, with embodiment 1 detection method, is the haydite concrete of table 5 to proportioning
The testing result of haydite floating index is 16.8%；
The haydite floating degree of the haydite concrete of table 3 is evaluated：According to the haydite floating index measuring, judge pottery
Whether grain concrete meets pumping construction requirement, and criterion is：When haydite floating index≤5%, haydite concrete meets pump
Send construction requirement；When haydite floating index>When 5%, haydite concrete does not meet pumping construction requirement, judges the pottery as table 5 for the proportioning
The haydite floating index index of grain concrete is unqualified.
3rd, the haydite concrete of table 5 is carried out with haydite suppression floating fall resistance process
1）The floating friction reducer formula 2 of haydite suppression
The floating friction reducer formula 2 of haydite suppression, is shown in Table 6
The floating friction reducer formula 2 of table 6 haydite suppression
Prepare the floating friction reducer of haydite suppression：Weigh above-mentioned each raw material by table 6 proportioning, mix homogeneously, standby；
2）Determine volume and the addition of the floating friction reducer of haydite suppression：Step is with the step 2 of embodiment 2）With 3）
Known：The preparation slump is 220mm, and haydite floating index is 16.8%, is computed：The floating friction reducer volume of haydite suppression
βYFFor 0.19%.Gel material content is 470kg/m3, being calculated the floating friction reducer addition of haydite suppression according to 0.19% volume is
0.88kg/m3, the addition by calculating weighs the floating friction reducer of haydite suppression, in incorporation haydite concrete, mixing and stirring, and stirring
Time 3min.
4th, contrast test：By adding cellulose ether thickening agent, haydite suppression floating fall resistance is processed
From hydroxypropyl methyl cellulose ether（Molecular weight 100,000）, volume（Account for the percentage rate of Binder Materials quality）For
0.15%, gel material content is 470kg/m3, being calculated hydroxypropyl methyl cellulose ether consumption is 0.70kg/m3, then by hydroxyl
Propyl methocel ether mixes in concrete and is uniformly mixed, and mixing time is 3min.
5th, the relative analyses mixing cellulose ether thickening agent with the suppression floating fall resistance treatment effect mixing the floating friction reducer of haydite suppression
Table 7 is mixed cellulose ether thickening agent and is floated fall resistance treatment effect relative analyses with the suppression of the floating friction reducer of suppression of mixing haydite
As shown in Table 7：
1）After the floating friction reducer of admixture haydite suppression, the haydite floating index of haydite concrete is reduced to 4.2% by 16.8%, collapses
Degree is reduced to 210mm by 220mm, reduces amplitude very little, and the amplitude that reduces, within 10%, meets pumping construction requirement；
2）After adding of fiber element ether thickening agent, the haydite floating index of haydite concrete is reduced to 4.0% by 16.8%, collapses
Degree is reduced to 130mm by 220mm, and haydite concrete becomes very sticky it is impossible to meet pumping requirements, increases pumping admixture consumption
3.5kg/m3The slump improves to 190mm afterwards, substantially meets pumping construction；
3）Adding of fiber element ether thickening agent is than the floating friction reducer of admixture haydite suppression, the fluid effect reduction effect to pumping admixture
Much greater, concrete flowability（The slump）Reduction amplitude is larger, and fills the floating friction reducer of haydite suppression and have little influence on
The fluid effect of pumping admixture；
4）The pumping flow velocity of the haydite concrete of the floating friction reducer of admixture haydite suppression（1.35m/s）It is higher than adding of fiber element ether
The pumping flow velocity of the haydite concrete of thickening agent（1.05m/s）, the pumping pressure of the haydite concrete of the floating friction reducer of admixture haydite suppression
Power（5.5MPa）Will be less than the pumping pressure of the haydite concrete of adding of fiber element ether thickening agent（7.5MPa）, illustrate that haydite suppression is floating
The pumping lubricant effect of friction reducer is better than the effect of the common thickening agent of cellulose ether thickening agent.
Embodiment 4：Haydite suppression floats friction reducer formula 3 and its for reducing the haydite floating degree in pumping haydite concrete
Compliance test result
1st, LC30 pumping haydite concrete match ratio, the preparation slump is 220mm, is shown in Table 8.
Table 8 LC30 pumps haydite concrete match ratio
2nd, the detection of haydite floating index and evaluation
Haydite floating index detection method, with embodiment 1 detection method, is the haydite concrete of table 8 to proportioning
The testing result of haydite floating index is 18.7%；Haydite floating index>When 5%, do not meet pumping construction requirement, judge proportioning as
The haydite floating index index of the haydite concrete of table 8 is unqualified.
3rd, the haydite concrete of table 8 is carried out with haydite suppression floating fall resistance process
1）The floating friction reducer formula 8 of haydite suppression
The floating friction reducer formula 3 of haydite suppression, is shown in Table 9
The floating friction reducer formula 3 of table 9 haydite suppression
Prepare the floating friction reducer of haydite suppression：Weigh above-mentioned each raw material by table 9 proportioning, mix homogeneously, standby；
2）Determine volume and the addition of the floating friction reducer of haydite suppression：Step is with the step 2 of embodiment 2）With 3）
Known：The preparation slump is 220mm, and haydite floating index is 18.7%, is computed：The floating friction reducer volume of haydite suppression
βYFFor 0.21%.Gel material content is 490kg/m3, being calculated the floating friction reducer addition of haydite suppression according to 0.21% volume is
1.01kg/m3, the addition by calculating weighs the floating friction reducer of haydite suppression, in incorporation haydite concrete, mixing and stirring, and stirring
Time 3min.
4th, contrast test：By adding polyacrylamide thickeners, haydite suppression floating fall resistance is processed
From polyacrylamide（Anionic, molecular weight 400～10,000,000）, volume（Account for the percentage of Binder Materials quality
Rate）For 0.15%, gel material content is 490kg/m3, being calculated polyacrylamide consumption is 0.74kg/m3, then by polypropylene
Amide mixes in concrete and is uniformly mixed, and mixing time is 3min.
5th, the relative analyses mixing polyacrylamide thickeners with the suppression floating fall resistance treatment effect mixing the floating friction reducer of haydite suppression
Table 10 is mixed polyacrylamide thickeners and is floated fall resistance treatment effect relative analyses with the suppression of the floating friction reducer of suppression of mixing haydite
As shown in Table 10：
1）After the floating friction reducer of admixture haydite suppression, the haydite floating index of haydite concrete is reduced to 3.8% by 18.7%, collapses
Degree does not have reduction to meet pumping construction requirement；
2）After admixture polyacrylamide thickeners, the haydite floating index of haydite concrete is reduced to 3.5% by 18.7%, collapses
Degree of falling is reduced to 145mm by 220mm, and haydite concrete becomes very sticky it is impossible to meet pumping requirements, increases pumping admixture consumption
After 2.8kg/m3, the slump improves to 205mm, substantially meets pumping construction；
3）Admixture polyacrylamide thickeners are made than the floating friction reducer of admixture haydite suppression, the fluid effect reduction to pumping admixture
With much greater, concrete flowability（The slump）Reduction amplitude is larger, and fills the floating friction reducer hardly shadow of haydite suppression
Ring the fluid effect of pumping admixture；
4）The pumping flow velocity of the haydite concrete of the floating friction reducer of admixture haydite suppression（1.37m/s）It is higher than admixture polyacrylamide
The pumping flow velocity of the haydite concrete of amine thickening agent（1.12m/s）, the pumping of the haydite concrete of the floating friction reducer of admixture haydite suppression
Pressure（6.0MPa）Will be less than the pumping pressure of the haydite concrete of admixture polyacrylamide thickeners（7.8MPa）, haydite is described
The pumping lubricant effect of the floating friction reducer of suppression is better than the effect of polyacrylamide thickeners.
Claims (9)
1. a kind of haydite suppression floats friction reducer it is characterised in that being become by the mixed raw material of following weight parts：Polyethylene Glycol 55～85
Part, 3～9 parts of xanthan gum, vinylacetate and 8～15 parts of ethylene copolymer rubber powder, 5～13 parts of dextrin, sodium polyacrylate 15～36
Part, 6～15 parts of alkali swelling type acrylate copolymer, 2～9 parts of polyvinyl alcohol, 3～13 parts of triethanolamine, Sorbitol 12～22
Part, 5～13 parts of erythritol, 2～8 parts of triterpenoid saponin, 0.5～3 part of potassium hydroxide, 1.2～5 parts of sodium hydroxide.
2. the floating friction reducer of haydite according to claim 1 suppression is it is characterised in that the mean molecule quantity of described Polyethylene Glycol
Grade is 6000；The mean molecule quantity grade of described sodium polyacrylate is 4000；Described polyvinyl alcohol is PVA-1788, gathers
Right is 1700, and alcoholysis degree is 88%.
3. a kind of method for reducing the haydite floating degree in pumping haydite concrete is it is characterised in that include following walking
Suddenly：
1）Measure the haydite floating index of haydite concrete sample：
ⅰ）The instrument measuring the haydite floating index of haydite concrete sample adopts haydite floating index to detect cylinder, described pottery
Grain floating index detection cylinder：Including the square-shaped metal cylinder of the mutual UNICOM of upper and lower two-layer, detect cylinder upper/lower terminal nozzle respectively
It is provided with metal cover board；Take haydite concrete sample to be measured, mix uniformly, loads in haydite floating index detection cylinder, will detect cylinder
In the haydite concrete sample of upper and lower two-layer plug and pound jolt ramming respectively, then that haydite concrete sample is floating along detection cylinder nozzle,
To detect that cylinder seals again, and be inverted, keep flat, more symmetrically and evenly rapped 40 times along around inverted drum outer wall with rubber hammer, jolt ramming, so
Afterwards the metal cover board positioned at upper end is opened, stand 30～60min；
ⅱ）After standing finishes, take out the haydite concrete sample that haydite floating index detects upper and lower two-layer in cylinder respectively, proceed to
It is rinsed in the square hole screen of a diameter of 5mm, picks out haydite therein, be dried to constant weight, weigh, respectively obtain haydite and float
Haydite quality m in the haydite concrete sample of index detection cylinder upper stratat1With haydite quality m in lower floor haydite concrete samplet2, so
Calculate haydite floating index λ afterwardsTL, calculating formula such as formula is 1. shown：
λTL= (mt1- mt0)/ mt0×100% ；Formula 1.,
Formula 1. in：λTLHaydite floating index, calculates and is accurate to 0.1%；mt1The haydite quality that upper part concrete sifts out,
g；mt2The haydite quality that lower part concrete sifts out, g；mt0—mt1And mt2Meansigma methodss, g；
2）The haydite floating degree of haydite concrete is evaluated：According to step 1）The pottery of the haydite concrete sample of middle mensure
Grain floating index, judges whether haydite concrete meets pumping construction requirement, criterion is：When haydite floating index≤5%
When, haydite concrete meets pumping construction requirement；When haydite floating index>When 5%, haydite concrete does not meet pumping construction will
Ask；
3）The haydite concrete not meeting pumping construction requirement is carried out with haydite suppression floating fall resistance process：
ⅰ）Prepare the floating friction reducer of haydite suppression：The proportioning of the floating friction reducer of haydite suppression as described in claim 1 weigh raw material Polyethylene Glycol,
Xanthan gum, vinylacetate and ethylene copolymer rubber powder, dextrin, sodium polyacrylate, alkali swelling type acrylate copolymer, polyethylene
Alcohol, triethanolamine, Sorbitol, erythritol, triterpenoid saponin, potassium hydroxide and sodium hydroxide, mix homogeneously, standby；
ⅱ）Determine the volume of the floating friction reducer of haydite suppression：According to step 1）The haydite of the haydite concrete sample of middle mensure floats and refers to
Number λTLWith preparation slump SL of haydite concrete, calculate the volume β of the floating friction reducer of haydite suppressionYF, calculating formula such as formula 2. institute
State：
βYF=（λTL- 5%）×0.01+（SL-80）×0.01%/20；Formula 2.,
Formula 2. in：βYFFor the floating friction reducer volume of haydite suppression, calculate and be accurate to 0.01%；λTLFor haydite floating index, it is accurate to
0.1%；SL is the preparation slump of haydite concrete, and unit mm is accurate to 1mm；
ⅲ）Determine the floating friction reducer addition of haydite suppression：It is the floating friction reducer addition of haydite suppression that friction reducer volume is floated in described haydite suppression
Account for the quality percentage of Binder Materials in haydite concrete sample, according to the volume β of the floating friction reducer of haydite suppressionYFValue and haydite coagulation
The quality of Binder Materials in soil sample, is calculated the floating friction reducer addition of haydite suppression, and the addition by calculating weighs haydite suppression
Floating friction reducer, mixes in haydite concrete, mixing and stirring, mixing time 2～5min；
4）To step 3）Haydite concrete sub-sampling again after middle haydite suppression floating fall resistance process, detects its haydite floating index and reality
The border slump, judges whether to meet pumping construction requirement, criterion is：The haydite floating index of the haydite concrete 1. detecting
It is not more than 5%；The error of the actual measurement slump of the haydite concrete 2. detecting and the preparation slump is in the range of ± 10%；When simultaneously
Meet above-mentioned standard 1. 2. when, the haydite concrete after haydite suppression floating fall resistance is processed meets pumping construction and requires, if being unsatisfactory for
State standard 1. 2. for the moment, then do not meet pumping construction requirement；
The haydite suppression floating fall resistance adjustment that carries out not meeting pumping construction requirement is processed：According to haydite suppression floating friction reducer volume adjustment
Method, calculates the volume β of the floating friction reducer of haydite suppression after adjustmentYF2, then according to volume βYF2In value and haydite concrete sample
The quality of Binder Materials, calculates the floating friction reducer addition of haydite suppression, weighs the floating friction reducer of haydite suppression by addition, mixes haydite and mix
In solidifying soil, mixing and stirring, repeat step 4）, until haydite concrete meets pumping construction requirement, meet above-mentioned mark simultaneously
Standard is 1. 2.；
Friction reducer volume method of adjustment is floated in described haydite suppression, is the volume β calculating in front haydite suppression floating fall resistance processYF1Base
Further volume adjustment on plinth, the volume β of the floating friction reducer of haydite suppression after adjustmentYF2Calculating formula such as formula is 3. shown：
βYF2=βYF1+△βYF；Formula 3.,
Formula 3. in：βYF2For the floating friction reducer volume of haydite suppression after adjustment, calculate and be accurate to 0.01%；βYF1For the pottery before adjustment
The floating friction reducer volume of grain suppression, is accurate to 0.01%；△βYFFor haydite suppression floating friction reducer adjustment volume, it is accurate to 0.01%；
Formula 3. in haydite suppression floating friction reducer adjustment volume △ βYFCalculating formula such as formula 4. shown：
△βYF=（λTL1- λTL2）×0.01 +（SL2- SL1）×0.01%/20；Formula 4.,
Formula 4. in：△βYFFor haydite suppression floating friction reducer adjustment volume, calculate and be accurate to 0.01%；λTL1For suppression floating fall resistance before processing
Haydite floating index, be accurate to 0.01%；λTL2Haydite floating index after processing for suppression floating fall resistance, is accurate to 0.01%；SL1
For the haydite concrete slump of suppression floating fall resistance before processing, unit mm, it is accurate to 1mm；SL2Haydite after processing for suppression floating fall resistance
Concrete slump, unit mm, it is accurate to 1mm.
4. method according to claim 3 it is characterised in that：Step 1）In,）Described haydite floating index detection cylinder,
The metal cylinder inwall square length of side is 200mm, and every layer height is 100mm, and wall thickness is 5mm, metal cylinder upper and lower two-layer body
Long-pending equal, detachable；Described haydite floating index detection cylinder, upper and lower two-layer junction is provided with fluid sealant leather packing, and upper and lower two
End opening and upper and lower port metal cover board and upper and lower two-layer junction, are equipped with the moving fastening for being fixedly connected.
5. method according to claim 3 it is characterised in that：Step 1）In,）The pottery of described haydite concrete sample
During granule density grade ＜ 700, time of repose 30min；During haydite density rating >=700 of haydite concrete sample, time of repose
60min.
6. method according to claim 3 it is characterised in that：Step 1）In,）Described haydite concrete sample loads
When in haydite floating index detection cylinder, concrete sample exceeds nozzle 5mm.
7. method according to claim 3 it is characterised in that：Step 1）In,）Upper and lower two-layer in described detection cylinder
When concrete sample plugs and pounds jolt ramming respectively, every layer of number of times plugging and pounding is 20 times；Plugging and pounding jolt ramming mode is：Tamper is from edge to center
Spirally plug and pound, plug and pound tamper during lower floor and should run through bilevel haydite concrete sample, when plugging and pounding upper strata, tamper should be inserted through
To lower-layer concrete sample upper surface, each layer plugs and pounds uses rubber hammer along drum outer wall surrounding to upper strata haydite concrete sample after finishing
Symmetrically and evenly rap 20 times, jolt ramming, to haydite concrete sample, the hole that plugs and pounds on no air pocket and surface disappears.
8. method according to claim 3 it is characterised in that：Step 1）In,）Described drying be blast drier in
105 ± 5 DEG C of drying.
9. method according to claim 3 it is characterised in that：Step 1）In, the haydite of described haydite concrete sample
Floating assessment of indices method is applied to the mensure of the haydite floating index of the haydite concrete of haydite maximum particle diameter≤25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440662.5A CN105036597B (en) | 2015-07-24 | 2015-07-24 | Friction reducer and the method for reducing the haydite floating degree in pumping haydite concrete are floated in a kind of haydite suppression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510440662.5A CN105036597B (en) | 2015-07-24 | 2015-07-24 | Friction reducer and the method for reducing the haydite floating degree in pumping haydite concrete are floated in a kind of haydite suppression |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105036597A CN105036597A (en) | 2015-11-11 |
| CN105036597B true CN105036597B (en) | 2017-03-01 |
Family
ID=54443644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510440662.5A Active CN105036597B (en) | 2015-07-24 | 2015-07-24 | Friction reducer and the method for reducing the haydite floating degree in pumping haydite concrete are floated in a kind of haydite suppression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105036597B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143771A (en) * | 2007-08-31 | 2008-03-19 | 武汉理工大学 | Light aggregate concrete pumping agent |
| CN101913812A (en) * | 2010-08-10 | 2010-12-15 | 俞锡贤 | Composite glue powder for mortar |
| CN101928127A (en) * | 2010-08-30 | 2010-12-29 | 武汉海剑工贸有限责任公司 | Super-light aggregate concrete for long-distance homogeneous pumping construction and preparation method thereof |
| CN104535458A (en) * | 2015-01-09 | 2015-04-22 | 东南大学 | Determination method for bulk density and clearance rate of coarse aggregates |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050281615A1 (en) * | 2004-06-21 | 2005-12-22 | Mckemie R M | Stability-enhancing admixture and improved base stabilization process for use in roadway construction and reconstruction |
-
2015
- 2015-07-24 CN CN201510440662.5A patent/CN105036597B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101143771A (en) * | 2007-08-31 | 2008-03-19 | 武汉理工大学 | Light aggregate concrete pumping agent |
| CN101913812A (en) * | 2010-08-10 | 2010-12-15 | 俞锡贤 | Composite glue powder for mortar |
| CN101928127A (en) * | 2010-08-30 | 2010-12-29 | 武汉海剑工贸有限责任公司 | Super-light aggregate concrete for long-distance homogeneous pumping construction and preparation method thereof |
| CN104535458A (en) * | 2015-01-09 | 2015-04-22 | 东南大学 | Determination method for bulk density and clearance rate of coarse aggregates |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105036597A (en) | 2015-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Safiuddin et al. | Effects of recycled concrete aggregate on the fresh properties of self-consolidating concrete | |
| Kaplan et al. | Avoidance of blockages in concrete pumping process | |
| CN109437749A (en) | C60 concrete and its mixing proportion design method based on package coarse aggregate mortar thickness | |
| CN109503089A (en) | A kind of anti-water dispersion pulp liquid and preparation method thereof for shield synchronization slip casting | |
| CN109305780A (en) | Pipeline sprays repair materials, preparation method and the construction technology that pipeline rehabilitation is carried out using the material | |
| CN113929365B (en) | Self-compacting solidified soil and use method thereof | |
| CN102815902A (en) | Preparation and application method of high-strength large-flow shrinkage-free cement slurry | |
| CN115028419A (en) | Design method for self-compacting concrete mix proportion | |
| CN104261764B (en) | A kind of shrinkage type concrete interface treating agent and interface processing method thereof | |
| CN114086765B (en) | Deep funnel grouting sleeve slurry supplementing method | |
| CN105036597B (en) | Friction reducer and the method for reducing the haydite floating degree in pumping haydite concrete are floated in a kind of haydite suppression | |
| Wright | ENTRAINED AIR IN CONCRETE. | |
| Scanlon | Factors influencing concrete workability | |
| Lam | A study on using crushed sand to replace natural sand in high-strength self-compacting concrete towards sustainable development in construction | |
| CN113929410B (en) | Preparation method of self-compacting concrete based on compressible stacking model | |
| CN112710782B (en) | Performance test evaluation method of concrete foam control agent | |
| CN107063930B (en) | A kind of pump concrete education resistance and stick poly- property detection device and test method | |
| JPH0366274B2 (en) | ||
| CN107986712A (en) | A kind of high-strength fast hard cracking resistance reinforces mortar and preparation method thereof | |
| CN107522441A (en) | A kind of cement composition and prepare its method | |
| CN106194257A (en) | A kind of in the method for tailing disposal mastic at the bottom of the open-air pit of activity sedimentation | |
| JPH0231182B2 (en) | ||
| CN110031360A (en) | A kind of detection of inorganic flow material homogeneity and representation method | |
| JPS63284469A (en) | Method for measuring basic fluid water volume of mixture composed of liquid, powder and grain and method for deciding characteristics of various kinds of compounds in said mixture system and method for preparing said mixture | |
| CN109061116B (en) | Material capable of simulating properties of freshly mixed light concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |