CN107053447B - A kind of maintenance process of cement products - Google Patents
A kind of maintenance process of cement products Download PDFInfo
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- CN107053447B CN107053447B CN201710366194.0A CN201710366194A CN107053447B CN 107053447 B CN107053447 B CN 107053447B CN 201710366194 A CN201710366194 A CN 201710366194A CN 107053447 B CN107053447 B CN 107053447B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/04—Preventing evaporation of the mixing water
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- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to cement products technical fields, more particularly to a kind of maintenance process of cement products, its step includes (1) stirring casting, (2) primary maintenance, (3) secondary maintenance, (4) it forms naturally, it joined in cement products modified montmorillonite used, it is maintained in a maintenance processes under higher pressure cooperation is at the uniform velocity moved and carries out steam curing and sprinkling curing agent, under each mutually coordinated effect of step, it is smooth with surface inside final cement products obtained, without sand holes, overall load weight is higher, toughness is preferable, it is practical, it is suitble to promote in this field.
Description
[technical field]
The present invention relates to cement products technical fields, and in particular to a kind of maintenance process of cement products.
[background technique]
Main component of the cement as building gel rubber material, is widely used in building trade.Cement products was solidifying
Maintenance in journey directly influences the quality of cement products, and traditional maintenance process to cement products is in cement system mostly
It allows its natural cooling after product pouring molding, water spray then is carried out to cement products again and is drenched, but some cement products thickness is too
Greatly, along with the constitutive material water imbibition of cement products is not strong, cause moisture that can not penetrate into the depths of cement products, lead to water
For mud product because water shortage generates contraction during coagulation forming, inside forms hole or desertification, and then reduces cement system
Cement products underproof in this way is applied to after infrastructure there are some potential safety problems by the intensity of product, and serious person goes back
It will lead to the generation of major accident.Therefore, cement products needs to conserve well after pouring molding just to can guarantee cement products
Quality, nowadays there are many cement products curing agent, curing agent be sprayed at the surface of cement products to cement system
Product carry out maintenance and moisturizing, but effect is not so well, and it is desirable to a kind of maintenance processes of better cement products.
[summary of the invention]
It is an object of the invention to: bad, the cement products caused for existing cement products curing method effect
The bad problem of quality, provides a kind of maintenance process of cement products, and the cement products intensity which obtains is high, quality
It is good.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of maintenance process of cement products, comprising the following steps:
(1) include in the constitutive material of cement products it is modified montmorillonite used, it is described modified montmorillonite used to occupy entire raw material gross weight
15-25%, then each raw material of cement products and water are put into blender according to mass ratio 1:2.5-2.8, be mixed
Uniformly, then mixture is poured into mold；
(2) cement products not demoulded is put into fog room and is once conserved, by dynamic in a maintenance processes
Power device keeps cement products to do uniform circular motion around fog room, and keeping the pressure of fog room is 0.5-0.8MPa, toward water
Mud product sprays curing agent, then leads to steam toward fog room and carries out steam curing to cement products, the steam-cured time is 1-2
Hour, curing agent is sprayed toward cement products again after each steam curing, then carries out steam curing again, and so on 2-3
Secondary, primary maintenance terminates, and is then demoulded；
(3) cement products after demoulding is rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam and supports
Shield, it is 0.3-0.5MPa that the pressure of fog room is kept in secondary maintenance processes, and temperature is 35-45 DEG C, during secondary maintenance every
Cement products is drenched with water within 2-3 hours, the time of secondary maintenance is 8-10 hours；
(4) after secondary maintenance, its natural cooling will outside cement products rest chamber, be allowed, until molding.
Wherein, the curing agent is made of the raw material of following parts by weight: 12-18 parts of kaolin, 12-18 parts of flyash, stone
15-20 parts of ashes, 15-20 parts of talcum powder, 50-80 parts of sodium silicate aqueous solution, 15-20 parts of acetone, 20-30 parts of ethylenediamine, silicon are molten
6-10 parts of glue, 5-10 parts of sodium thiosulfate, 10-15 parts of diatomite, 8-16 parts of sodium carbonate, 2-4 parts of calcium nitrate, calcium formate water solution
20-30 parts.
In the present invention, further, the curing agent the preparation method comprises the following steps: a) in parts by weight, by the kaolinite
Soil, flyash, pulverized limestone, talcum powder mixing are put into grinder and wear into mixed-powder, make the partial size 0.8- of mixed-powder
Then mixed-powder is put into sodium silicate aqueous solution rapidly behind temperature lower calcination 1-2 hours of 400-450 DEG C, stirs by 1.2mm
It mixes and is cooled fast to room temperature to after being completely dissolved, obtain mixed solution；B) temperature of mixed solution is raised to 60-70 DEG C by, is added
Sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate, stirring be completely dissolved after stop heating, finally add acetone, ethylenediamine,
Silica solution, calcium formate water solution, stirring is to room temperature to get curing agent.
In the present invention, further, it is described modified montmorillonite used the preparation method comprises the following steps: a) in parts by weight, by 25-40
Part acrylamide is mixed with 50-80 parts of distilled water, and stirring is completely dissolved acrylamide, then toward molten under ice water cooling condition
The pH of sodium hydrate regulator solution is added in liquid to neutrality, sequentially adds 25-40 parts of acrylic acid, 15-30 parts of montmorillonites, has stirred
5-10 parts of sodium peroxydisulfates, the double acrylic esters of 5-10 parts of ethylene glycol are sequentially added after fully dissolved, after mixing evenly put mixture
It is formed in micro-wave oven with microwave radiation, the time of radiation is 1-2 hours；B) is by product obtained in step a) anhydrous
It is impregnated 0.5-1 hours in ethyl alcohol, is then placed in dryer and is dried 3-4 hours at 70-80 DEG C, by the product after drying
Shape is clayed into power after being crushed with pulverizer to get modified montmorillonite used.
In the present invention, further, in step (4), after the cement products is placed in outdoor, daily to cement products into
Row water drenching continues 5-7 days.
In the present invention, further, during secondary maintenance, keeping the humidity of fog room is 50-60%.
In the present invention, further, the type of cooling in step a) is that the container for filling mixed solution is put into ice water
In cooled down.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, the maintenance process of cement products of the invention, joined in the preparation process of cement products it is modified montmorillonite used,
Montmorillonite by dissolution, impregnate, radiation, after drying, there is very strong absorptive and water-retaining property, it is modified montmorillonite used can be in water
The coagulation forming stage of mud product inhibits the volatilization of moisture well, utilizes moisture well；Meanwhile cement products exists
The primary maintenance stage maintains higher pressure, cooperates the at the uniform velocity movement of cement products that can reduce in cement products under High Voltage
The generation of portion's hole, then moisturizing and sprinkling curing agent are carried out to cement products by steam maintenance, cement products progress hole is filled out
It mends, under each step is mutually coordinated, there is very high intensity after cement products can be made to form, total quality is more preferably.
2, the maintenance process of cement products of the invention, in curing agent, with kaolin, flyash, pulverized limestone, talcum powder
As the solute for filling up hole and sand holes, the mixed solution that sodium silicate aqueous solution obtains is dissolved into, has stronger osmotic effect,
But cementitiousness is weaker after solute is precipitated, and can not be bonded to one with cement products solute is precipitated at hole, because
And the curing agent formed with acetone, ethylenediamine, silica solution is added, it can allow solute that there is good caking property when being precipitated, and
It can promote its setting rate, but being added after curing agent can make solute atoms mutually make composition particles under bonding in the solution
Partial size increases, and causes solute that can not follow the lesser hole of solvent entrance aperture, thus adds with sodium thiosulfate, diatom
The blender that soil, sodium carbonate, calcium nitrate form can allow the composition particles being bonded together to have and shrink elasticity well, and
Calcium formate water solution is for promoting the mobility of solution to obtain the effect of curing agent sufficiently under each mutually coordinated effect of ingredient
It plays.
3, the maintenance process of cement products of the invention, a variety of curing steps cooperate under coordination, can allow final
Obtained cement products has very high intensity, and internal imporosity is surfacing, flawless without sand holes, and total quality is good, this is supported
Maintaining method is practical, is suitble to promote in this field.
[specific embodiment]
Embodiment 1:
A kind of maintenance process of cement products, comprising the following steps:
(1) include in the constitutive material of cement products it is modified montmorillonite used, it is described modified montmorillonite used to occupy entire raw material gross weight
15%, each raw material of cement products and water are put into blender according to mass ratio 1:2.5 then, are mixed evenly, so
Mixture is poured into mold afterwards；
(2) cement products not demoulded is put into fog room and is once conserved, by dynamic in a maintenance processes
Power device keeps cement products to do uniform circular motion around fog room, and keeping the pressure of fog room is 0.5MPa, toward cement system
Product spray curing agent, then lead to steam toward fog room and carry out steam curing to cement products, and the steam-cured time is 1 hour,
Curing agent is sprayed toward cement products again after each steam curing, then carries out steam curing again, and so on 2 times, once
Maintenance terminates, and is then demoulded；
(3) cement products after demoulding is rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam and supports
It protects, it is 0.3MPa that the pressure of fog room is kept in secondary maintenance processes, and temperature is 35 DEG C, humidity 50%, during secondary maintenance
Cement products was drenched with water every 2 hours, the time of secondary maintenance is 8 hours；
(4) after secondary maintenance, its natural cooling will outside cement products rest chamber, be allowed, until molding, during which right daily
Cement products carries out water drenching, continues 5 days.
Wherein, the curing agent is made of the raw material of following parts by weight: 12 parts of kaolin, 12 parts of flyash, pulverized limestone 15
Part, 15 parts of talcum powder, 50 parts of sodium silicate aqueous solution, 15 parts of acetone, 20 parts of ethylenediamine, 6 parts of silica solution, 5 parts of sodium thiosulfate, silicon
10 parts of diatomaceous earth, 8 parts of sodium carbonate, 2 parts of calcium nitrate, 20 parts of calcium formate water solution.The curing agent the preparation method comprises the following steps: a) according to
The kaolin, flyash, pulverized limestone, talcum powder are mixed to be put into grinder and wear into mixed-powder, make to mix by parts by weight meter
The partial size of powder is 0.8mm, and it is water-soluble that mixed-powder is then put into rapidly sodium metasilicate behind temperature lower calcination 1 hour of 400 DEG C
In liquid, stirring is cooled fast to room temperature with ice water to after being completely dissolved, and obtains mixed solution；B) is by the temperature liter of mixed solution
To 60 DEG C, sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate is added, stirring stops heating after being completely dissolved, finally adds
Acetone, ethylenediamine, silica solution, calcium formate water solution, stirring is to room temperature to get curing agent.
Wherein, described modified montmorillonite used the preparation method comprises the following steps: a) in parts by weight, by 25 parts of acrylamides and 50 parts
Distilled water mixing, stirring are completely dissolved acrylamide, and sodium hydroxide tune is then added into solution under ice water cooling condition
The pH of solution is saved to neutrality, sequentially adds 25 parts of acrylic acid, 15 parts of montmorillonites, stirring sequentially adds 5 parts of mistakes after being completely dissolved
Mixture, is put into is formed in micro-wave oven with microwave radiation after mixing evenly by sodium sulphate, the double acrylic esters of 5 parts of ethylene glycol, spoke
The time penetrated is 1 hour；B) impregnates product obtained in step a) 0.5 hour in dehydrated alcohol, is then placed on baking
It is dried 3 hours at 70 DEG C in dry machine, shape of claying into power after the product after drying is crushed with pulverizer takes off to get modified cover
Stone.
Embodiment 2:
A kind of maintenance process of cement products, comprising the following steps:
(1) include in the constitutive material of cement products it is modified montmorillonite used, it is described modified montmorillonite used to occupy entire raw material gross weight
20%, each raw material of cement products and water are put into blender according to mass ratio 1:2.65 then, are mixed evenly, so
Mixture is poured into mold afterwards；
(2) cement products not demoulded is put into fog room and is once conserved, by dynamic in a maintenance processes
Power device keeps cement products to do uniform circular motion around fog room, and keeping the pressure of fog room is 0.65MPa, toward cement system
Product spray curing agent, then lead to steam toward fog room and carry out steam curing to cement products, the steam-cured time is 1.5 small
When, curing agent is sprayed toward cement products again after each steam curing, then carries out steam curing again, and so on 2 times, one
Secondary maintenance terminates, and is then demoulded；
(3) cement products after demoulding is rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam and supports
It protects, it is 0.4MPa that the pressure of fog room is kept in secondary maintenance processes, and temperature is 40 DEG C, humidity 55%, during secondary maintenance
Cement products was drenched with water every 2.5 hours, the time of secondary maintenance is 9 hours；
(4) after secondary maintenance, its natural cooling will outside cement products rest chamber, be allowed, until molding, during which right daily
Cement products carries out water drenching, continues 6 days.
Wherein, the curing agent is made of the raw material of following parts by weight: 15 parts of kaolin, 15 parts of flyash, pulverized limestone
17.5 parts, 17.5 parts of talcum powder, 65 parts of sodium silicate aqueous solution, 17.5 parts of acetone, 20 parts of ethylenediamine, 8 parts of silica solution, thiosulfuric acid
7.5 parts of sodium, 12.5 parts of diatomite, 12 parts of sodium carbonate, 3 parts of calcium nitrate, 25 parts of calcium formate water solution.The preparation side of the curing agent
Method are as follows: a) in parts by weight, by the kaolin, flyash, pulverized limestone, talcum powder mix be put into grinder wear into it is mixed
Powder is closed, makes the partial size 1mm of mixed-powder, then puts mixed-powder rapidly behind temperature lower calcination 1.5 hours of 425 DEG C
Enter in sodium silicate aqueous solution, stirring is cooled fast to room temperature with ice water to after being completely dissolved, and obtains mixed solution；B) will be mixed
The temperature of solution is raised to 65 DEG C, and sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate is added, and stirring stops adding after being completely dissolved
Heat finally adds acetone, ethylenediamine, silica solution, calcium formate water solution, and stirring is to room temperature to get curing agent.
Wherein, described modified montmorillonite used the preparation method comprises the following steps: a) in parts by weight, by 33 parts of acrylamides and 65 parts
Distilled water mixing, stirring are completely dissolved acrylamide, and sodium hydroxide tune is then added into solution under ice water cooling condition
The pH of solution is saved to neutrality, sequentially adds 33 parts of acrylic acid, 23 parts of montmorillonites, stirring sequentially adds 7.5 parts after being completely dissolved
The double acrylic esters of sodium peroxydisulfate, 7.5 parts of ethylene glycol, after mixing evenly by mixture be put into micro-wave oven with microwave radiation at
Type, the time of radiation are 1.5 hours；B) impregnates product obtained in step a) 0.75 hour in dehydrated alcohol, then will
It is placed in dryer dries 3.5 hours at 75 DEG C, clay into power after the product after drying is crushed with pulverizer shape to get
It is modified montmorillonite used.
Embodiment 3:
A kind of maintenance process of cement products, comprising the following steps:
(1) include in the constitutive material of cement products it is modified montmorillonite used, it is described modified montmorillonite used to occupy entire raw material gross weight
25%, each raw material of cement products and water are put into blender according to mass ratio 1:2.8 then, are mixed evenly, so
Mixture is poured into mold afterwards；
(2) cement products not demoulded is put into fog room and is once conserved, by dynamic in a maintenance processes
Power device keeps cement products to do uniform circular motion around fog room, and keeping the pressure of fog room is 0.8MPa, toward cement system
Product spray curing agent, then lead to steam toward fog room and carry out steam curing to cement products, and the steam-cured time is 2 hours,
Curing agent is sprayed toward cement products again after each steam curing, then carries out steam curing again, and so on 3 times, once
Maintenance terminates, and is then demoulded；
(3) cement products after demoulding is rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam and supports
It protects, it is 0.5MPa that the pressure of fog room is kept in secondary maintenance processes, and temperature is 45 DEG C, humidity 60%, during secondary maintenance
Cement products was drenched with water every 3 hours, the time of secondary maintenance is 10 hours；
(4) after secondary maintenance, its natural cooling will outside cement products rest chamber, be allowed, until molding, during which right daily
Cement products carries out water drenching, continues 7 days.
Wherein, the curing agent is made of the raw material of following parts by weight: 18 parts of kaolin, 18 parts of flyash, pulverized limestone 20
Part, 20 parts of talcum powder, 80 parts of sodium silicate aqueous solution, 20 parts of acetone, 30 parts of ethylenediamine, 10 parts of silica solution, 10 parts of sodium thiosulfate,
15 parts of diatomite, 16 parts of sodium carbonate, 4 parts of calcium nitrate, 30 parts of calcium formate water solution.The curing agent the preparation method comprises the following steps: a) is pressed
According to parts by weight meter, the kaolin, flyash, pulverized limestone, talcum powder are mixed to be put into grinder and wear into mixed-powder, makes to mix
The partial size for closing powder is 1.2mm, and mixed-powder is then put into rapidly sodium metasilicate water behind temperature lower calcination 2 hours of 450 DEG C
In solution, stirring is cooled fast to room temperature with ice water to after being completely dissolved, and obtains mixed solution；B) is by the temperature of mixed solution
70 DEG C are raised to, sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate is added, stirring stops heating after being completely dissolved, finally adds again
Enter acetone, ethylenediamine, silica solution, calcium formate water solution, stirring is to room temperature to get curing agent.
Wherein, described modified montmorillonite used the preparation method comprises the following steps: a) in parts by weight, by 40 parts of acrylamides and 80 parts
Distilled water mixing, stirring are completely dissolved acrylamide, and sodium hydroxide tune is then added into solution under ice water cooling condition
The pH of solution is saved to neutrality, sequentially adds 40 parts of acrylic acid, 30 parts of montmorillonites, stirring sequentially adds 10 parts of mistakes after being completely dissolved
Mixture, is put into is formed in micro-wave oven with microwave radiation after mixing evenly by sodium sulphate, the double acrylic esters of 10 parts of ethylene glycol, spoke
The time penetrated is 2 hours；B) impregnates product obtained in step a) 1 hour in dehydrated alcohol, is then placed on drying
It is dried 4 hours at 80 DEG C in machine, shape of claying into power after the product after drying is crushed with pulverizer is to get modified montmorillonite used.
In order to further prove characteristic of the invention, following comparative test is now done:
Contrast groups 1: in the raw material composition of cement products, remove modified montmorillonite used, remaining mode is in strict accordance with embodiment 2
It carries out.
Contrast groups 2: in a maintenance processes, removing sprinkling curing agent, remaining mode is carried out in strict accordance with embodiment 2.
Contrast groups 3: in a maintenance processes, removing steam curing, remaining mode is carried out in strict accordance with embodiment 2.
The specification of cement products is set as 70cm*60cm*7cm, takes cement system made of contrast groups 1-3 and embodiment 1-3
Product sample measures each data, and obtained data are as follows:
Can be seen that the maintenance process of cement products of the invention by upper table, inside finally obtained cement products with
Surface is smooth, without sand holes, and overall load weight is higher, and toughness is preferable, practical, is suitble to promote in this field.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the patents of the present invention.
Claims (6)
1. a kind of maintenance process of cement products, it is characterised in that: the following steps are included:
It (1) include modified montmorillonite used, the modified montmorillonite used 15- for occupying entire raw material gross weight in the constitutive material of cement products
25%, each raw material of cement products and water are put into blender according to mass ratio 1:2.5-2.8 then, are mixed evenly,
Then mixture is poured into mold；
(2) cement products not demoulded is put into fog room and is once conserved, filled in a maintenance processes by power
It sets and cement products is kept to do uniform circular motion around fog room, keeping the pressure of fog room is 0.5-0.8MPa, toward cement system
Product spray curing agent, then lead to steam toward fog room and carry out steam curing to cement products, the steam-cured time is that 1-2 is small
When, curing agent is sprayed toward cement products again after each steam curing, then carries out steam curing again, and so on 2-3 times,
Primary maintenance terminates, and is then demoulded；
(3) cement products after demoulding being rested on into fog room, then carries out secondary maintenance, secondary maintenance stops steam curing,
The pressure that fog room is kept in secondary maintenance processes is 0.3-0.5MPa, and temperature is 35-45 DEG C, every 2-3 during secondary maintenance
Hour is drenched cement products with water, and the time of secondary maintenance is 8-10 hours；
(4) after secondary maintenance, its natural cooling will outside cement products rest chamber, be allowed, until molding；
Wherein, the curing agent is made of the raw material of following parts by weight: 12-18 parts of kaolin, 12-18 parts of flyash, pulverized limestone
15-20 parts, 15-20 parts of talcum powder, 50-80 parts of sodium silicate aqueous solution, 15-20 parts of acetone, 20-30 parts of ethylenediamine, silica solution 6-
10 parts, 5-10 parts of sodium thiosulfate, 10-15 parts of diatomite, 8-16 parts of sodium carbonate, 2-4 parts of calcium nitrate, calcium formate water solution 20-
30 parts.
2. a kind of maintenance process of cement products according to claim 1, it is characterised in that: the preparation side of the curing agent
Method are as follows: a) in parts by weight, by the kaolin, flyash, pulverized limestone, talcum powder mix be put into grinder wear into it is mixed
Powder is closed, the partial size 0.8-1.2mm of mixed-powder is made, it is then that mixed-powder is small in 400-450 DEG C of temperature lower calcination 1-2
When after be put into sodium silicate aqueous solution rapidly, stirring be cooled fast to room temperature to after being completely dissolved, obtain mixed solution；B) will
The temperature of mixed solution is raised to 60-70 DEG C, sodium thiosulfate, diatomite, sodium carbonate, calcium nitrate is added, after stirring is completely dissolved
Stop heating, finally adds acetone, ethylenediamine, silica solution, calcium formate water solution, stirring is to room temperature to get curing agent.
3. a kind of maintenance process of cement products according to claim 1, it is characterised in that: the modified montmorillonite used system
Preparation Method are as follows: a) in parts by weight, 25-40 parts of acrylamides are mixed with 50-80 parts of distilled water by, and stirring makes acrylamide
It is completely dissolved, the pH of sodium hydrate regulator solution is then added into solution under ice water cooling condition to neutrality, sequentially adds
25-40 parts of acrylic acid, 15-30 parts of montmorillonites, stirring sequentially add 5-10 parts of sodium peroxydisulfates, 5-10 parts of second two after being completely dissolved
Mixture, is put into is formed in micro-wave oven with microwave radiation after mixing evenly by the double acrylic esters of alcohol, and the time of radiation is that 1-2 is small
When；B) impregnates product obtained in step a) 0.5-1 hours in dehydrated alcohol, is then placed in dryer in 70-
It is dried 3-4 hours at 80 DEG C, shape of claying into power after the product after drying is crushed with pulverizer is to get modified montmorillonite used.
4. a kind of maintenance process of cement products according to claim 1, it is characterised in that: in step (4), the water
After mud product is placed in outdoor, water drenching is carried out to cement products daily, continues 5-7 days.
5. a kind of maintenance process of cement products according to claim 1, it is characterised in that: in the process of secondary maintenance
In, keeping the humidity of fog room is 50-60%.
6. a kind of maintenance process of cement products according to claim 4, it is characterised in that: the cooling side in step a)
Formula is that the container for filling mixed solution is put into ice water to cool down.
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| CN108996641B (en) * | 2018-08-30 | 2021-08-24 | 贺州市骏鑫矿产品有限责任公司 | Method for treating acid leaching and iron removing waste liquid of potassium feldspar by utilizing red mud |
| CN110173122B (en) * | 2019-05-06 | 2021-11-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Concrete heat-preservation and moisture-retention compound curing method capable of realizing surface compaction and reinforcement |
| CN113072392A (en) * | 2021-03-30 | 2021-07-06 | 南通铁建建设构件有限公司 | Remote intelligent high-strength anti-seepage shield segment maintenance method |
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| CN104609777A (en) * | 2014-12-18 | 2015-05-13 | 齐齐哈尔越峰科技有限公司 | Porous slag non-fired product preparation method |
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