CN105236819A - Capillary crystalline building waterproofing agent - Google Patents
Capillary crystalline building waterproofing agent Download PDFInfo
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- CN105236819A CN105236819A CN201510598086.7A CN201510598086A CN105236819A CN 105236819 A CN105236819 A CN 105236819A CN 201510598086 A CN201510598086 A CN 201510598086A CN 105236819 A CN105236819 A CN 105236819A
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Abstract
The invention discloses a capillary crystalline building waterproofing agent. The waterproofing agent is prepared from, by weight, 10-25 parts of sodium silicate, 3-5 parts of sodium methyl silicate, 2-6 parts of sodium alginate, 4-9 parts of gelatin, 2-5 parts of dodecyl ethoxy sulfobetaine, 1-4 parts of sodium carbonate, 1-4 parts of sodium citrate, 2-4 parts of triethanolamine, 3-7 parts of potassium aluminum sulfate, 3-6 parts of calcium sulfate, 1-4 parts of sodium polyacrylate, 2-5 parts of calcium lignosulphonate, 3-6 parts of carboxymethyl cellulose, 2-6 parts of calcium hydroxide, 1-4 parts of boric acid and 60-80 parts of water. The waterproofing agent disclosed in the invention has the advantages of good waterproofing performance, good durability, good self-healing performance and low cost, and can be used in waterproofing of roofs, basements and toilets.
Description
Technical field
The present invention relates to a kind of permeable crystallization type waterproof agent for building, belong to concrete construction water-proof material technical field.
Background technology
Concrete is a kind of heterogeneous compound hard brittle material, and its tensile strength lower (being about 1/20 ~ 1/10 of ultimate compression strength), ultimate tensile strength are also smaller (only having 0.02% ~ 0.03%).When it is in hydration and hardening process, when the inside tensile stress produced because the reasons such as dry shrinkage, chemical shrinkage, Carbonization contract cause volumetric shrinkage to be out of shape is greater than the tensile strength of itself, concrete there will be cracking phenomena, this not only can destroy the impermeability of its structure, also will affect the security of its weather resistance, the stability of reinforcing bar and building.In addition, concrete or a kind of heterogeneous material, from macrostructure, concrete is by different size and the also different particles of aggregates of shape and discontinuous hydrated cement slurry are formed; From microtexture, concrete is by skewness and the fine voids varied in size is formed.When these spaces are formed successively with the path be mutually connected, the concrete be chronically exposed in physical environment is very easy to be subject to moisture attack, and therefore its weather resistance also will be destroyed.Therefore, how to reduce the bleeding of concrete passage that these cracking phenomenas and microscopic voids cause, thus improve concrete impermeability and endurance quality will be that concrete water-proof material researcher puts forth effort one of problem studied.
Improving concrete anti-permeability performance is one of key factor improving endurance performance of concrete, and people have employed concrete water-proof material to improve concrete anti-permeability performance for this reason.According to the difference of principle and mode of appearance, concrete water-proof material can be divided into rigidity water-proofing material and flexible waterproof material.Flexible waterproof material mainly comprises coiled material, waterproof paint and sealing material etc.Wherein existing waterproof paint also comprises pitch, epoxy resin, urethane and acrylic resin etc.Concrete pore is blocked by brushing these water-proof materials certain thickness at concrete surface, bottle up the erosion of moisture, thus improve concrete anti-permeability performance, but these water-proof materials and basal plane concrete binding power weak, the phenomenon that easy and basal plane is peeling, and itself be air-locked, when moisture is discharged from inside, the waterproof layer on surface can be broken through, cause the coating lost of life.In addition, these water-proof materials also because of containing formaldehyde, can impact human body and environment after using, and be limited to use usually.Rigidity water-proofing material mainly refers to the material mixing rigid waterproofing agent in concrete.Wherein rigid waterproofing agent includes again inorganic water-proof agent and organic waterproof agent.Inorganic water-proof agent mainly refers to by mixing silicate, molysite and villaumite etc., to react generation colloid with the hydrated product in concrete, blocking inside concrete hole, thus improve concrete impermeability, but the impervious water resistance of these water-proof materials is poor, waterproof layer weather resistance is also poor, and does not have self-healing performance, thus use range is limited.Organic waterproof agent mainly refers to that organism is the water-resisting agent of main carriers, as waterproofing agent of organosilicon.Waterproofing agent of organosilicon has very low surface tension, can reduce concrete surface energy, and can form hydrophobic film within the scope of concrete surface certain depth, makes it have outstanding hydrophobic nature; To concrete, also there is " ventilated " function simultaneously, decrease internal water washing away waterproof layer.But still there is following Railway Project in waterproofing agent of organosilicon, as unstable in emulsion, alkali resistance is poor, poor containing the high organism of a large amount of volatility, self-healing performance, and along with time lengthening, waterproof effect can reduce gradually.
Cementitious capillary waterproofing material be with silicate cement, quartz sand etc. for base material, mix active chemistry composition a kind of novel rigid water-proof material.Its mechanism of action is met after water, the Ca (OH) produced in active chemistry and cement hydration process
2reaction, generates water-fast gelinite, as gel of calcium silicate and ettringite etc., thus blocking internal void, close capillary porosity duct, increase degree of compactness, form the sealed-for-life waterproof layer combined together with concrete, improve cement concrete weather resistance.Compared with inorganic water-proof agent, organic waterproof agent, capillary crystalline waterproofing agent has good waterproof ability, self-healing property and weather resistance, and this is by chemical reaction, improves the result of whole matrix water resistance.But domestic permeable crystalline waterproofing material mainly relies on external import penetration crystallization master batch to be configured, if China Patent No. is CN102786275B, CN101362867A, CN101654351A etc., thus water-proof material production cost is higher, thus limits its range of application in Concrete Anti Hydraulic Projects.Therefore, develop a kind of new permeable crystalline waterproofing material and will play very important effect to concrete construction.
Summary of the invention
For the technical problem that the penetrant crystalline masterbatch cost compare of permeable crystalline waterproofing material in above-mentioned prior art is high, technical problem to be solved by this invention proposes a kind ofly to have good water resistance, endurance quality and self-healing performance, and the permeable crystallization type waterproof agent for building that cost is low.
The present invention for the taked technical scheme that solves the problem is:
A kind of permeable crystallization type waterproof agent for building, be made up of each component of following weight: water glass 10 ~ 25 parts, sodium methyl silicate 3 ~ 5 parts, sodium alginate 2 ~ 6 parts, 4 ~ 9 parts, gelatin, dodecyl oxyethyl group sultaine 2 ~ 5 parts, 1 ~ 4 part, sodium carbonate, Trisodium Citrate 1 ~ 4 part, trolamine 2 ~ 4 parts, potassium aluminium sulfate 3 ~ 7 parts, 3 ~ 6 parts, calcium sulfate, sodium polyacrylate 1 ~ 4 part, calcium lignin sulphonate 2 ~ 5 parts, Natvosol 3 ~ 6 parts, 2 ~ 6 parts, calcium hydroxide, boric acid 1 ~ 4 part, 60 ~ 80 parts, water.
Preferably, described permeable crystallization type waterproof agent for building is made up of each component of following weight:
Water glass 12 ~ 22 parts, sodium methyl silicate 3.5 ~ 4.5 parts, sodium alginate 3 ~ 5 parts, 5 ~ 8 parts, gelatin, dodecyl oxyethyl group sultaine 3 ~ 4 parts, 2 ~ 3 parts, sodium carbonate, Trisodium Citrate 2 ~ 3 parts, trolamine 2.5 ~ 3.5 parts, potassium aluminium sulfate 4 ~ 6 parts, 4 ~ 5 parts, calcium sulfate, sodium polyacrylate 2 ~ 3 parts, calcium lignin sulphonate 3 ~ 4 parts, Natvosol 4 ~ 5 parts, 3 ~ 5 parts, calcium hydroxide, boric acid 2 ~ 3 parts, 65 ~ 75 parts, water.
Preferably, its weight is as follows:
Water glass 18 parts, sodium methyl silicate 4 parts, sodium alginate 4 parts, 6.5 parts, gelatin, dodecyl oxyethyl group sultaine 3.5 parts, 2.5 parts, sodium carbonate, Trisodium Citrate 2.5 parts, trolamine 3 parts, potassium aluminium sulfate 5 parts, 4.5 parts, calcium sulfate, sodium polyacrylate 2.5 parts, calcium lignin sulphonate 3.5 parts, Natvosol 4.5 parts, 4 parts, calcium hydroxide, boric acid 2.5 parts, 70 parts, water.
In the present invention, water glass is a kind of crystallizing agent, and its effect with the calcium ion generation chemical reaction in inside concrete hole solution, can generate CaSiO
3crystal, fills crackle and hole, reaches and increases density and waterproof effect.In addition, water glass can also with hydrated product Ca (OH) in concrete
2effect, generates C-S-H (xCaOSiO
2yH
2o) gel waterproof layer, improves Concrete Anti water function.
Sodium methyl silicate, its effect be with the cement based compound effects in concrete after, generate complex compound in concrete pore, form waterproof xln, realize the effect in waterproof, self-healing hole, blocking duct.Moreover sodium methyl silicate not only can form firmly water-repellent layer, concrete is made to have good water-proof function; The contact angle of concrete and water can also be made to reach more than 120 degree, make concrete have " ventilated " function, improve concrete durability.In addition, it also has microdilatancy effect, realizes compensate for shrinkage, reduces cracking.
Sodium alginate and gelatin can form irreversible gel by the calcium ion crane span structure effect in concrete, increase the thickness of waterproof gel, improve concrete water-proof effect.In addition, the retentiveness of sequestering, the gelatin of sodium alginate, can also increase autogenous healing and water-repellancy.
Dodecyl oxyethyl group sultaine is not only zwitterionics, but also is water-resisting agent self polycondensation crystallizing agent.This is due in its molecular structure, simultaneously containing hydrophobic grouping-R-and hydrophilic radical-OH.Under concrete is in drying regime, its wetting ability is greater than hydrophobicity, water soluble, and polycondensation crystalline polamer does not occur for it; And when concrete is in dampness, polycondensation crystallization occurs for it, form water-fast xln and block crack and pore, improving autogenous healing ability.
Sodium carbonate can be used as a kind of crystallization reaction agent in water-resisting agent, and this is because it directly can be had an effect with calcium ion in concrete, forms insoluble CaCO
3crystal, reduces concrete pore rate, strengthens water resistance.
Trisodium Citrate, not only can add the dispersiveness of micelle in reinforced concrete, delay hydration, reduce thermal spike, thus reduce the cracking caused because of the temperature difference, but also the component in capillary crystalline waterproof agent can be made to move in the crackle and hole of concrete substrate, and generate crystallized product by follow-up reaction, realize the filling of crackle and hole, thus reach the effect of enhancing.In addition, Trisodium Citrate also has sequestering action to the calcium ion in concrete, reduces the potential barrier of its crystal nucleation, the formation of accelerate concrete hydrated product, thus the effect realizing crystallization waterproof.
Trolamine is a kind of tensio-active agent, can improve speed of reaction between the hydrated products such as concrete mesosilicic acid DFP, tetracalcium aluminoferrite, accelerates concrete hydrating C-S-H (xCaOSiO
2yH
2o) formation of gel, thickens waterproof layer, effectively improves concrete impermeability, thus improves endurance performance of concrete.In addition, trolamine also serves as complexing auxiliary agent in capillary crystalline waterproof agent, with calcium ion effect in concrete, generates complexing double salt, realizes closely knit hole, improve concrete strength and toughness.
Potassium aluminium sulfate, calcium sulfate are a kind of crystallizing agents, can react with hydrated product in concrete, generate and are insoluble in water and have certain expansile needle-like crystal ettringite, be filled in capillary-size pore, form waterproof layer, improve concrete water-proof performance.In addition, in potassium aluminium sulfate, aluminum ion can also form title complex network structure with calcium ion, methyl siliconic acid ion in concrete, improves the overall crack resistance of concrete and flexural capacity; Calcium sulfate then can supplement certain calcium ion for concrete, promotes calcium ion generation common-ion effcet, generates crystal, improve water resistance.
Sodium polyacrylate can form insoluble salt with calcium ion in concrete, causes molecule crosslinked and gelation precipitates, increases the thickness of gel waterproof layer, improve concrete durability.In addition, sodium polyacrylate also plays the effect helping film, dispersion agent and water-holding agent in water-resisting agent, and the mobility of water-resisting agent mixture can be impelled to strengthen, thus accelerates uniform acceleration and the seepage velocity of mixture, prevent the hole of the uneven generation of water-resisting agent, and then improve concrete impermeability.
Calcium lignin sulphonate is a kind of conventional water reducer, is also a kind of anion surfactant simultaneously.Owing to having hydrophilic and organic compound that is hydrophobic two groups in molecule, surface tension and the interfacial tension of coagulation water in soil can be reduced, play dissemination, lubrication and wetting action, effectively can not only improve the depth of penetration of water-resisting agent, and concrete mobility, workability and the slump can also be improved, reduce the consumption of concrete water, improve concrete density, improve concrete serviceability, and then improve concrete each stage strength, impervious water resistance, endurance quality.In addition, calcium lignin sulphonate also plays the effect of self polycondensation crystallizing agent in water-resisting agent, and the self-healing ability of Concrete Structure improves concrete weather resistance, extends concrete work-ing life.
Natvosol can be used as water-holding agent in water-resisting agent, plays the homogeneity effect strengthening water-resisting agent, can make, between water-resisting agent component and concrete, sufficient chemical reaction occurs, improve concrete impervious water-proof function.Under the effect of water medium, Natvosol has the effect of surfactivity, thickening, suspension, bonding, emulsification, film forming, dispersion and protective colloid etc.These effects play very important effect to the concrete resistance to cleavage of raising and water resistance.
Calcium hydroxide, boric acid, can regulate and optimize water-resisting agent formula on the one hand, on the other hand, calcium hydroxide can serve as calcium ion compensator, and the endurance quality of water-resisting agent can be made to improve and life; Boric acid then serves as pH value conditioning agent, and water-resisting agent can be made to adapt to more complicated concrete Service Environment.
In use, only need direct spraying or brushing on the surface needing waterproof thing, overcoating brush of laying equal stress on is to certain thickness for permeable crystallization type waterproof agent for building of the present invention, and maintenance 3 days or more.
The invention has the beneficial effects as follows:
The permeable crystallization type waterproof agent for building that the present invention is a kind of active chemical components, diminishing composition, water conservation become to be grouped into.Wherein active chemical components includes again crystallization reaction agent, self polycondensation crystallization reaction thing, complexing agent.When water-resisting agent provided by the present invention is sprayed or is brushed at concrete surface, along with time lapse, water-resisting agent can form concentration gradient at concrete surface, active chemical components in water-resisting agent will permeate and in the crack being diffused into inside concrete and hole, following effect will occur: first, the hydrated product in crystallizing agent and concrete forms CaSiO
3crystal, CaCO
3the crystal such as crystal, ettringite, thus fill, blocking concrete inner microscopic checks, hole and pore, reach the object of waterproof; Secondly, when concrete is in drying regime, self polycondensation crystallization reaction thing is in dormant state, if polycondensation crystallization can occur for it when having water to infiltrate, forms self-healing water-proof function, thus improves concrete durability; Moreover complexing agent can promote unhydrated hydrated cementitious in concrete under certain condition, generate hydrated calcium silicate gel crystal, thus make concrete have secondary impermeability ability; Finally, inorganic silicic acid sodium and organic sodium methyl silicate are combined as active substance, can enter inside concrete by depth of penetration, and reaction generates C-S-H gel, blocking and closed capillary bore; Hydrophobic nature protective layer can be formed on surface again, enhance the waterproof effect of water-resisting agent.In addition, the irreversible gel that the present invention also utilizes the retentiveness of sequestering, the gelatin of sodium alginate, sodium alginate and gelatin to be formed, increases the thickness of waterproof gel, improves Concrete Anti water-based and self-healing property.The more important thing is, the present invention does not adopt external import penetration crystallization master batch as carrier, but adopt that raw material sources are easy to get, cheap composition is as component, significantly reduce the production cost of water-resisting agent, and consider that the characteristic of various moiety is complementary, Optimization, thus obtain good water resistance, endurance quality and self-healing performance, and the permeable crystallization type waterproof agent for building that cost is low.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Permeable crystallization type waterproof agent for building of the present invention, it is be made up of each component of following weight: water glass 10 ~ 25 parts, sodium methyl silicate 3 ~ 5 parts, sodium alginate 2 ~ 6 parts, 4 ~ 9 parts, gelatin, dodecyl oxyethyl group sultaine 2 ~ 5 parts, 1 ~ 4 part, sodium carbonate, Trisodium Citrate 1 ~ 4 part, trolamine 2 ~ 4 parts, potassium aluminium sulfate 3 ~ 7 parts, 3 ~ 6 parts, calcium sulfate, sodium polyacrylate 1 ~ 4 part, calcium lignin sulphonate 2 ~ 5 parts, Natvosol 3 ~ 6 parts, 2 ~ 6 parts, calcium hydroxide, boric acid 1 ~ 4 part, 60 ~ 80 parts, water.During concrete enforcement, spraying or the mode of brushing can be adopted directly to be applied to and to need on the basal plane of waterproof, overcoating brush of laying equal stress on is to certain thickness, and maintenance 3 days or more.
Table 1 is each component weight of permeable crystallization type waterproof agent for building 5 specific embodiments.
Table 1
Table 2 is the performance test results of permeable crystallization type waterproof agent for building embodiment 1 ~ 5
Table 2
Certainly, just the preferred embodiments of the disclosure is described in detail above, not limits practical range of the present invention with this, and all equivalence changes done according to principle of the present invention, structure and structure, all should be covered by protection scope of the present invention.
Claims (3)
1. a permeable crystallization type waterproof agent for building, it is characterized in that: be made up of each component of following weight: water glass 10 ~ 25 parts, sodium methyl silicate 3 ~ 5 parts, sodium alginate 2 ~ 6 parts, 4 ~ 9 parts, gelatin, dodecyl oxyethyl group sultaine 2 ~ 5 parts, 1 ~ 4 part, sodium carbonate, Trisodium Citrate 1 ~ 4 part, trolamine 2 ~ 4 parts, potassium aluminium sulfate 3 ~ 7 parts, 3 ~ 6 parts, calcium sulfate, sodium polyacrylate 1 ~ 4 part, calcium lignin sulphonate 2 ~ 5 parts, Natvosol 3 ~ 6 parts, 2 ~ 6 parts, calcium hydroxide, boric acid 1 ~ 4 part, 60 ~ 80 parts, water.
2. permeable crystallization type waterproof agent for building according to claim 1, it is characterized in that: its weight is as follows: water glass 12 ~ 22 parts, sodium methyl silicate 3.5 ~ 4.5 parts, sodium alginate 3 ~ 5 parts, 5 ~ 8 parts, gelatin, dodecyl oxyethyl group sultaine 3 ~ 4 parts, 2 ~ 3 parts, sodium carbonate, Trisodium Citrate 2 ~ 3 parts, trolamine 2.5 ~ 3.5 parts, potassium aluminium sulfate 4 ~ 6 parts, 4 ~ 5 parts, calcium sulfate, sodium polyacrylate 2 ~ 3 parts, calcium lignin sulphonate 3 ~ 4 parts, Natvosol 4 ~ 5 parts, 3 ~ 5 parts, calcium hydroxide, boric acid 2 ~ 3 parts, 65 ~ 75 parts, water.
3. permeable crystallization type waterproof agent for building according to claim 2, is characterized in that: its weight is as follows: water glass 18 parts, sodium methyl silicate 4 parts, sodium alginate 4 parts, 6.5 parts, gelatin, dodecyl oxyethyl group sultaine 3.5 parts, 2.5 parts, sodium carbonate, Trisodium Citrate 2.5 parts, trolamine 3 parts, potassium aluminium sulfate 5 parts, 4.5 parts, calcium sulfate, sodium polyacrylate 2.5 parts, calcium lignin sulphonate 3.5 parts, Natvosol 4.5 parts, 4 parts, calcium hydroxide, boric acid 2.5 parts, 70 parts, water.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863154A (en) * | 2018-06-20 | 2018-11-23 | 河南阳光防水科技有限公司 | Self-healing capillary crystalline waterproof agent |
| CN113716892A (en) * | 2021-09-10 | 2021-11-30 | 福建环球之源环保科技有限公司 | Multicolor veneer baking-free brick and double-component curing complexing agent and preparation method thereof |
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| CN102875082A (en) * | 2011-07-14 | 2013-01-16 | 上海惠邦特种涂料有限公司 | Cement-based permeable crystalline core master batch and its application |
| KR20130117911A (en) * | 2012-04-17 | 2013-10-29 | 주식회사 제이에스기술 | The penetrating waterproof agent and manufacturing method thereof |
| CN104355584A (en) * | 2014-10-24 | 2015-02-18 | 上海宝田新型建材有限公司 | Cementitious capillary crystalline waterproofing building material |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101891432A (en) * | 2010-07-14 | 2010-11-24 | 江苏博特新材料有限公司 | Permeable crystalline waterproof coating |
| CN102167547A (en) * | 2010-12-22 | 2011-08-31 | 北京东方雨虹防水技术股份有限公司 | Cementitious capillary crystalline waterproof material capable of quickly repairing cracks |
| CN102875082A (en) * | 2011-07-14 | 2013-01-16 | 上海惠邦特种涂料有限公司 | Cement-based permeable crystalline core master batch and its application |
| KR20130117911A (en) * | 2012-04-17 | 2013-10-29 | 주식회사 제이에스기술 | The penetrating waterproof agent and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108863154A (en) * | 2018-06-20 | 2018-11-23 | 河南阳光防水科技有限公司 | Self-healing capillary crystalline waterproof agent |
| CN113716892A (en) * | 2021-09-10 | 2021-11-30 | 福建环球之源环保科技有限公司 | Multicolor veneer baking-free brick and double-component curing complexing agent and preparation method thereof |
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Application publication date: 20160113 |