CN109369137A - A kind of acid and alkali-resistance concrete - Google Patents
A kind of acid and alkali-resistance concrete Download PDFInfo
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- CN109369137A CN109369137A CN201811564659.4A CN201811564659A CN109369137A CN 109369137 A CN109369137 A CN 109369137A CN 201811564659 A CN201811564659 A CN 201811564659A CN 109369137 A CN109369137 A CN 109369137A
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Classifications
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2015—Sulfate resistance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
The invention discloses a kind of acid and alkali-resistance concrete, belong to technical field of concrete, its key points of the technical solution are that according to parts by weight, including 200-260 parts of cement, 100-160 parts of flyash, 550-650 parts of quartz sand, 100-200 parts of basalt, 10-20 parts of polycarboxylate water-reducer, admixture 450-550 parts acidproof, 200-300 parts of waterglass, 30-40 parts of prodan, 150-180 parts of water.Achieve the effect that the acid-proof alkaline for improving concrete.
Description
Technical field
The present invention relates to concrete field, in particular to a kind of acid and alkali-resistance concrete.
Background technique
Concrete is that have cementitious material by the general designation for the cementing integral engineered composite material that gathers materials.The concrete usually said
Refer to and cementitious material done by cement, sandstone, which is done, to gather materials, and cooperates by a certain percentage with water, it is agitated obtained by cement concrete,
Claim normal concrete, is widely used in civil engineering.
The type of concrete is relatively more, and with the continuous development of high-rise, the dosage of concrete also gradually increases.Closely
Nian Lai, concrete structure because of premature failure caused by Material degradation so that destroy the accident of avalanche at home and abroad repeatly between it is not fresh.It is common
Phenomenon has concrete surface cracking, peeling, steel bar corrosion exposed, constitutes to the durability of concrete and reinforced concrete structure tight
It threatens again.
The concrete volume that will lead in concrete that is corroded becomes larger, and starts to expand, after inside concrete expansion, concrete
Surface generates crack, more facilitates corrosive gas and liquid enters inside concrete, lead to the bearing capacity of concrete
It reduces, service life can also reduce.Concrete, which is corroded, mainly acid corrosion and caustic corrosion, and wherein sour corrosion is in the majority, existing
Poor, especially relatively high in some pH values place of concrete acid-proof alkaline, concrete is easier to be damaged, use
Service life also just substantially reduces.
Summary of the invention
In view of the deficienciess of the prior art, it is mixed to reach raising the object of the present invention is to provide a kind of acid and alkali-resistance concrete
Coagulate the effect of the acid-proof alkaline of soil.
Above-mentioned technical purpose of the invention has the technical scheme that
A kind of acid and alkali-resistance concrete, according to parts by weight, including 200-260 parts of cement, 100-160 parts of flyash, quartz sand
550-650 parts, 100-200 parts of basalt, 10-20 parts of polycarboxylate water-reducer, admixture 450-550 parts acidproof, waterglass 200-
300 parts, 30-40 parts of prodan, 150-180 parts of water.
By using above-mentioned technical proposal, flyash reduces the use of cement as the partial gelation material in concrete
Amount, while fly ash grain is small to be filled between the glue material of concrete, so that concrete compaction, effectively reduces corrosive goods
The compatibility of the infiltration of matter, polycarboxylate water-reducer and cement is good, can reduce the dosage of water, while making the mobility of concrete
It is good, the intensity of concrete is improved, while polycarboxylate water-reducer and metal ion form covalent bond, are complexed, improves aquation and produce
The diffusion rate of object, due to the generation of complex compound, in the C that aquation earlier damage clinker particle surface is formed3A hyrate and its
Its product (such as calcium sulphoaluminate), acceleration are reacted with gypsum, reduce Ca in concrete2+、Al3+Content so that coagulation
The native later period can be reduced with the ionic weight in conjunction with acidic materials, so reduce the later period expansion, improve the compression strength of concrete with
And acid-alkali-corrosive-resisting；Waterglass and prodan effect after generate have cementing power substance, so as to by aggregate with
And acidproof admixture is bonded together, effectively reducing causes to be easy in conjunction with corrosivity substance because of dispersion.To sum up, it improves mixed
Coagulate the resistance to acid and alkali of soil.
The present invention is further arranged to, and further includes the anionic polyacrylamide that mass fraction is 5% according to parts by weight
10-30 parts.
By using above-mentioned technical proposal, anionic polyacrylamide has very strong flocculation, can make concrete
In plurality of raw materials closely bond together, form reticular structure, improve the intensity of concrete, reduce ion and suspend, to subtract
Less in conjunction with corrosive ion, the resistance to acid and alkali of concrete is improved.
The present invention is further arranged to, and according to parts by weight, acidproof admixture includes 50-80 parts of silica flour, glass-cermic powder 55-
75 parts, 60-90 parts of ceramic powder.
By using above-mentioned technical proposal, silica flour, glass-cermic powder and ceramic powder all have resistance to acid and alkali, while can fill
Into the hole of concrete glue material, porosity is reduced, improves the density of concrete, quartz sand and glass-cermic powder, ceramic powder shape
At nucleus of crystal, so that around nucleus of crystal and make crystal growth when hydrated cementitious, to effectively reduce and acid and alkali substance
The corrosion of concrete is contacted and causes, to improve the resistance to acid and alkali of concrete.
The present invention is further arranged to, according to parts by weight, acidproof admixture include 65 parts of silica flour, 65 parts of glass-cermic powder,
75 parts of ceramic powder.
The present invention is further arranged to, and further includes 50-70 parts of nano silica, nanometer titanium dioxide according to parts by weight
40-60 parts of titanium.
By using above-mentioned technical proposal, nano silica and nano-titanium dioxide partial size are small, can adequately fill
Into the hole between glue material, while consistent protective film can also be formed, by silica, titanium dioxide and acid and alkali substance simultaneously
Reaction be to need to react under certain conditions, and under field conditions (factors), silica and titanium dioxide not with soda acid
Reaction, to improve the resistance to acid and alkali of concrete.
The present invention is further arranged to, and further includes 60 parts of nano silica, nano-titanium dioxide 50 according to parts by weight
Part.
The present invention is further arranged to, according to parts by weight, including 230 parts of cement, 130 parts of flyash, quartz sand 600
Part, 150 parts of basalt, 15 parts of polycarboxylate water-reducer, 500 parts of acidproof admixture, 250 parts of waterglass, 35 parts of prodan, water
165 parts.
The present invention is further arranged to, by weight score meter, further includes hydroxy ethylidene-diphosphate 25-35 in concrete
Part.
By using above-mentioned technical proposal, hydroxy ethylidene-diphosphate has corrosion inhibition, while acid and alkali-resistance, chemical stabilization
Property it is good, hydroxy ethylidene-diphosphate has good sequestering power, can have with various metals ion such as calcium, magnesium, copper, zinc etc.
Excellent sequestering power, while deactivating to the inorganic salts of metal such as calcium sulfate, calcium carbonate, salt is reduced to concrete
Corrosion.
In conclusion the invention has the following advantages:
1, polycarboxylate water-reducer and waterglass, prodan are used cooperatively so that the substance in concrete when most starting just
Hydration reaction occurs, so that substance is just expanded when most starting, later period substance hydration reaction is effectively prevent to expand and generate
The infiltration of extraneous corrosive substance is reduced in crack, while waterglass generates the glue with cementation with reacting for prodan
Shape substance plays good cementation to each substance in concrete, effectively reduces the generation in gap, to effectively reduce corruption
The infiltration of corrosion substance improves the resistance to acid and alkali of concrete；
2, nano silica, nano-titanium dioxide and hydroxy ethylidene-diphosphate are used cooperatively, and are reduced in concrete and are dissociated
While metal ion, nano silica and nano-titanium dioxide also generate layer protecting film, effectively reduce corrosive substance
Infiltration, improve the resistance to acid and alkali of concrete.
Specific embodiment
Embodiment 1
A kind of acid and alkali-resistance concrete, according to parts by weight, including 200 parts of cement, 100 parts of flyash, 550 parts of quartz sand, the Black Warrior
100 parts of rock, 10 parts of polycarboxylate water-reducer, 450 parts of acidproof admixture, 200 parts of waterglass, 30 parts of prodan, mass fraction are
5% 10 parts of anionic polyacrylamide, 50 parts of nano silica, 40 parts of nano-titanium dioxide, hydroxy ethylidene-diphosphate 25
Part, 150 parts of water, wherein acidproof admixture includes 50 parts of silica flour, 55 parts of glass-cermic powder, 60 parts of ceramic powder.
Embodiment 2
A kind of acid and alkali-resistance concrete, according to parts by weight, including 230 parts of cement, 130 parts of flyash, 600 parts of quartz sand, the Black Warrior
150 parts of rock, 15 parts of polycarboxylate water-reducer, 500 parts of acidproof admixture, 250 parts of waterglass, 35 parts of prodan, mass fraction are
5% 20 parts of anionic polyacrylamide, 60 parts of nano silica, 50 parts of nano-titanium dioxide, hydroxy ethylidene-diphosphate 30
Part, 165 parts of water, wherein acidproof admixture includes 65 parts of silica flour, 65 parts of glass-cermic powder, 75 parts of ceramic powder.
Embodiment 3
A kind of acid and alkali-resistance concrete, according to parts by weight, including 260 parts of cement, 160 parts of flyash, 650 parts of quartz sand, the Black Warrior
200 parts of rock, 20 parts of polycarboxylate water-reducer, 550 parts of acidproof admixture, 300 parts of waterglass, 40 parts of prodan, mass fraction are
5% 30 parts of anionic polyacrylamide, 70 parts of nano silica, 60 parts of nano-titanium dioxide, hydroxy ethylidene-diphosphate 35
Part, 180 parts of water, wherein acidproof admixture includes 80 parts of silica flour, 75 parts of glass-cermic powder, 90 parts of ceramic powder.
Comparative example 1
With embodiment 2 the difference is that without nano silica and nano-titanium dioxide.
Comparative example 2
With embodiment 2 the difference is that without hydroxy ethylidene-diphosphate.
Comparative example 3
With embodiment 2 the difference is that, it is sub- without no nano silica, nano-titanium dioxide and hydroxyl simultaneously in concrete
Ethyl diphosphonic acid.
Concrete NDT
(1) it is seeped according to water resistant in GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete standard "
Saturating test method carries out concrete impermeability test to selected match ratio sample, to evaluate the seepage-resistant grade of concrete.Chloride ion seeps
The grade classification of saturating ability is as shown in table 1.Testing result is as shown in table 2.
(2) resist according in GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete standard "
Sulfate attack test method, testing result are as shown in table 3.
The grade classification of 1 chloride permeability ability of table
| Concrete type | Electric conduction quantity (C) | Chloride ion permeability |
| The conventional concrete of W/C >=0.6 | >4000 | It is high |
| The conventional concrete of W/C=0.4-0.5 | 2000-4000 | It is medium |
| The conventional concrete of W/C < 0.4 | 1000-2000 | It is low |
| Latex modified concrete, inner sealing concrete | 100-1000 | It is extremely low |
| Polymer impregnated concrete | <100 | It is negligible |
The detection data of the concrete impervious chloride ion result of table 2
| Proportion | 28d test result (C) | 56d test result (C) |
| Embodiment 1 | 680 | 405 |
| Embodiment 2 | 580 | 305 |
| Embodiment 3 | 670 | 410 |
| Comparative example 1 | 1481 | 1108 |
| Comparative example 2 | 1490 | 1085 |
| Comparative example 3 | 1550 | 1300 |
3 Concrete Resist Reinforcing Sulfate Corrosion detection data of table
| Proportion | Corrode number | Compression strength/MP | Corrosion resistance index (Kf) |
| Embodiment 1 | 120 | 64.2 | 94.2% |
| Embodiment 2 | 120 | 72.9 | 96.6% |
| Embodiment 3 | 120 | 65.8 | 94.7% |
| Comparative example 1 | 120 | 57.7 | 87.1% |
| Comparative example 2 | 120 | 57.8 | 88.2% |
| Comparative example 3 | 120 | 50.4 | 80.5% |
The analysis of table 2 can be obtained;
(1) in embodiment 1-3, the penetrating power of 28 days and 56 days resisting chloride ion penetrations of concrete is all relatively low, is in 100-
In 1000 ranges, at the same in embodiment 2 in resisting chloride ion penetration penetrating power be lower than embodiment 1 and embodiment 3, illustrate to implement
It the ratio of each component is optimum proportioning in example 2, the acid-alkali-corrosive-resisting of concrete can be effectively improved；
(2) analysis of embodiment 2 and comparative example 1-3, when sub- without nano silica, nano-titanium dioxide and hydroxyl in concrete
Ethyl diphosphonic acid, the resisting corrosion of chlorine ion ability in comparative example 1, comparative example 2 and comparative example 3 reduce, comparative example 1 and comparative example
Resisting chloride ion penetration ability in 2 is suitable, but resisting chloride ion penetration ability is mutually far short of what is expected in comparative example 3, illustrates nano silica and receives
When rice titanium dioxide and hydroxy ethylidene-diphosphate collective effect, the metal ion in hydroxy ethylidene-diphosphate and concrete is sent out
Raw complex reaction, reduces the amount of free metal ion in concrete, to reduce the generation of salt, while nano silica and
The protective film of the formation of nano-titanium dioxide is effectively reduced chloride ion and enters in the hole of concrete；
The analysis of table 3 can be obtained:
(1) in embodiment 1-3, under conditions of identical erosion number, the compression strength and corrosion resistance index in embodiment 2 are high
In embodiment 1 and embodiment 3, illustrates that the proportion of embodiment 2 is optimum proportioning, effectively reduce the corrosion of sulfate；
(2) embodiment 2 and comparative example 1-3 analysis can obtain, and the compression strength and corrosion resistance index in comparative example 1-3 are below reality
Example 2 is applied, and compression strength and corrosion resistance index are similar in comparative example 1 and comparative example 2, but ought be simultaneously without nanometer titanium dioxide
When silicon, nano-titanium dioxide and hydroxy ethylidene-diphosphate, the sulfur resistive acid attack of concrete is minimum, illustrate nano silica,
When nano-titanium dioxide and hydroxy ethylidene-diphosphate are used cooperatively, the corrosion resistance of concrete can be effectively improved.
In conclusion when nano silica, nano-titanium dioxide and hydroxy ethylidene-diphosphate are used cooperatively, it can either
The metal ion to dissociate in concrete and hydroxy ethylidene-diphosphate are generated into complex compound, reduce the number of metal ion in concrete
Amount, to effectively reduce acid ion in conjunction with metal ion and generate salt, to reduce salt crystallization and lead to inside concrete
There is crack, to reduce the infiltration capacity of acid and alkali substance；Nano silica, nano-titanium dioxide can be good at filling out simultaneously
It is charged in the hole of concrete, forms protective film, effectively reduce acid and alkali substance and penetrate into the interior corrosion to concrete of concrete, mention
The resistance to acid and alkali of high concrete.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (8)
1. a kind of acid and alkali-resistance concrete, it is characterised in that: according to parts by weight, including 200-260 parts of cement, flyash 100-
160 parts, 550-650 parts of quartz sand, 100-200 parts of basalt, 10-20 parts of polycarboxylate water-reducer, acidproof admixture 450-550
Part, 200-300 parts of waterglass, 30-40 parts of prodan, 150-180 parts of water.
2. a kind of acid and alkali-resistance concrete according to claim 1, it is characterised in that: further include quality according to parts by weight
Score is 10-30 parts of anionic polyacrylamide of 5%.
3. a kind of acid and alkali-resistance concrete according to claim 1, it is characterised in that: according to parts by weight, acidproof admixture
Including 50-80 parts of silica flour, 55-75 parts of glass-cermic powder, 60-90 parts of ceramic powder.
4. a kind of acid and alkali-resistance concrete according to claim 3, it is characterised in that: according to parts by weight, acidproof admixture
Including 65 parts of silica flour, 65 parts of glass-cermic powder, 75 parts of ceramic powder.
5. a kind of acid and alkali-resistance concrete according to claim 1, it is characterised in that: further include nanometer according to parts by weight
50-70 parts of silica, 40-60 parts of nano-titanium dioxide.
6. a kind of acid and alkali-resistance concrete according to claim 5, it is characterised in that: further include nanometer according to parts by weight
60 parts of silica, 50 parts of nano-titanium dioxide.
7. a kind of acid and alkali-resistance concrete according to claim 1, it is characterised in that: according to parts by weight, including cement 230
Part, 130 parts of flyash, 600 parts of quartz sand, 150 parts of basalt, 15 parts of polycarboxylate water-reducer, 500 parts of acidproof admixture, water glass
250 parts of glass, 35 parts of prodan, 165 parts of water.
8. a kind of acid and alkali-resistance concrete according to claim 1, it is characterised in that: score meter by weight, in concrete also
Including 25-35 parts of hydroxy ethylidene-diphosphate.
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| CN201811564659.4A CN109369137A (en) | 2018-12-20 | 2018-12-20 | A kind of acid and alkali-resistance concrete |
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| CN201811564659.4A CN109369137A (en) | 2018-12-20 | 2018-12-20 | A kind of acid and alkali-resistance concrete |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110835251A (en) * | 2019-12-10 | 2020-02-25 | 华东交通大学 | Ultrahigh-performance concrete and preparation method thereof |
| CN112079595A (en) * | 2020-08-20 | 2020-12-15 | 杨正新 | Reverse-sealing type acid-resistant concrete and preparation method thereof |
| CN113443887A (en) * | 2021-03-25 | 2021-09-28 | 杨荣飞 | Water glass concrete and preparation method thereof |
| CN113443888A (en) * | 2021-04-01 | 2021-09-28 | 杨荣飞 | Sulfur acid-resistant concrete and production process thereof |
| CN114605127A (en) * | 2022-04-18 | 2022-06-10 | 三门峡市十安砼业有限公司 | Corrosion-resistant concrete |
| CN114956687A (en) * | 2022-05-30 | 2022-08-30 | 三亚瑞泽双林混凝土有限公司 | Preparation method of low-shrinkage high-strength concrete |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110835251A (en) * | 2019-12-10 | 2020-02-25 | 华东交通大学 | Ultrahigh-performance concrete and preparation method thereof |
| CN112079595A (en) * | 2020-08-20 | 2020-12-15 | 杨正新 | Reverse-sealing type acid-resistant concrete and preparation method thereof |
| CN112079595B (en) * | 2020-08-20 | 2021-12-24 | 浙江顺通建筑工业化有限公司 | Reverse-sealing type acid-resistant concrete and preparation method thereof |
| CN113443887A (en) * | 2021-03-25 | 2021-09-28 | 杨荣飞 | Water glass concrete and preparation method thereof |
| CN113443888A (en) * | 2021-04-01 | 2021-09-28 | 杨荣飞 | Sulfur acid-resistant concrete and production process thereof |
| CN114605127A (en) * | 2022-04-18 | 2022-06-10 | 三门峡市十安砼业有限公司 | Corrosion-resistant concrete |
| CN114956687A (en) * | 2022-05-30 | 2022-08-30 | 三亚瑞泽双林混凝土有限公司 | Preparation method of low-shrinkage high-strength concrete |
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Application publication date: 20190222 |