CN105236919A - Novel sodium silicate penetration waterproofing agent - Google Patents
Novel sodium silicate penetration waterproofing agent Download PDFInfo
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- CN105236919A CN105236919A CN201510598103.7A CN201510598103A CN105236919A CN 105236919 A CN105236919 A CN 105236919A CN 201510598103 A CN201510598103 A CN 201510598103A CN 105236919 A CN105236919 A CN 105236919A
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Abstract
The invention discloses a novel sodium silicate penetration waterproofing agent. The waterproofing agent is prepared from, by weight, 500-550 parts of sodium silicate, 4-8 parts of potassium aluminum sulfate, 3-6 parts of copper sulfate, 5-10 parts of zinc stearate, 5-10 parts of calcium stearate, 30-40 parts of diatomite, 4-9 parts of aluminum powder, 1-5 parts of polyaluminum ferric chloride, 2-7 parts of talcum powder, 2-5 parts of calcium formate, 2-6 parts of sodium lignosulfonate and 400-450 parts of water. The waterproofing agent disclosed in the invention has the advantages of large penetration depth and good durability, and can be used in waterproofing of roofs, basements and toilets.
Description
Technical field
The present invention relates to a kind of novel water glass infiltration water-resisting agent, belong to concrete construction water-proof material technical field.
Background technology
Concrete structure refers to the structure of concrete for main making.It mainly comprises plain concrete structure, skeleton construction and prestressed concrete structure etc.Wherein, skeleton construction all be it is believed that all the time is concrete structure the firmest, durable.Although reinforcing bar and concrete are the materials that two kinds of physical and mechanical properties are not identical, between them, there is very strong cohesive force, them can be made effectively to combine cooperation.In addition, concrete can also form the protective layer of reinforcing bar, thus makes reinforcing bar not by corrosion, and then improves Steel Concrete performance.Therefore, the use of people to skeleton construction gives very high expectation, and have ignored its endurance issues at leisure.
Concrete durability refers to that the effect of various destructive factor resisted under active usage conditions by concrete, the long-term ability keeping intensity and complete appearance.But the index of general evaluation concrete durability has impermeability, splitting resistance, frost resistance, resisting carbonization, acid-fast alkali-proof, resistivity against fire, wear resistance, abrasion resistance, alkali-aggregate reaction etc.Although the mechanism of action of these indexs is different and very complicated, their common ground are: all relevant to the complexity that water or gas transmit to inside concrete, are namely relevant to concrete perviousness.Such as, concrete carbonization is mainly due to CO
2gas penetrate into inside concrete and with Ca (OH) wherein
2or caused by the reaction of the hydrolysis product of cement such as hydrated calcium silicate; Mainly because water, sour gas etc. penetrate into, inside concrete causes acid erosion; Steel bar corrosion is because carbonic acid gas, water, oxygen and chlorion etc. penetrate into the reinforcement cover that concrete formed, and destroys caused by passive film; Concrete freeze-thaw damage causes owing to infiltrating concrete water icing frost heave under the condition of low temperature.Therefore, the key that solves the problem forms protective layer at concrete surface, blocking concrete inner capillary tube hole, and anti-sealing or gas etc. penetrate into inside concrete, improve concrete durability, thus extend concrete work-ing life.
At present, domestic permeable waterproof agent is of a great variety, but can be divided into inorganic infiltration water-resisting agent and the large class of organic infiltration water-resisting agent two by its chemical composition.Inorganic infiltration water-resisting agent, generally referring to by water glass is main carriers, and the semi-transparent clear liquid that is composited of appropriate catalyzer, dispersion agent, auxiliary agent and water etc. in addition, there is higher permeability, direct spraying is in the concrete surface needing waterproof, inside can be infiltrated rapidly, and with hydrolysis product of cement Ca (OH)
2react, generate water insoluble and there is the silicate of some strength, thus blocking internal void, close capillary porosity duct, improve concrete impermeability.Organic infiltration water-resisting agent, generally refer to organosilicon or non-organic silicon macromolecular compound is the infiltration water-resisting agent that main carriers synthesizes, there is penetrating power to a certain degree, concrete surface layer can be infiltrated, make it that there is hydrophobic nature or filling pore, form closely knit capillary structure, there is good water tolerance simultaneously.But part inorganic infiltration water-resisting agent has higher viscosity, the effect of use is not very desirable; The organic infiltration water-resisting agent of part also has pungent odour, or toxicity, or has higher production cost, and these largely limit its practical application.But basic reason is these infiltration water-resisting agents only to be covered concrete surface and maybe can not infiltrate into enough degree of depth, and waterproofing layer thickness is not enough, easily by water or gas pickling, thus reduces endurance performance of concrete.
Chinese patent literature discloses the curing agent that a kind of name is called " a kind of concrete protective curing agent " (publication number: CN1699290A, publication date: on November 23rd, 2005).It is made up of alkalimetal silicate, organosilane permeate agent, stablizer, wetting dispersing agent, water, and to realize improving concrete surface compactness and hydrophobic nature, and make surface have defencive function as target.Although which employs inorganic silicate primary coat method and organic silicon face coating method, make it have waterproof to a certain degree and care action, but because its main component has more full-bodied silicate, in process of osmosis, silicate not only can have influence on the speed that other moietys penetrate into inside concrete, but also can with concrete generation premature reaction, thus result in depth of penetration and only have 2-5mm, waterproofing layer thickness is not enough, and then affects endurance performance of concrete.Therefore, develop a kind of novel water glass infiltration water-resisting agent newly and will play very important effect to concrete construction.
Summary of the invention
Too high and cause the depth of penetration of water-resisting agent low for above-mentioned prior art mesosilicic acid salt viscosity, and occur too early fully to react with concrete and affect the technical problem of concrete durability, technical problem to be solved by this invention proposes a kind of depth of penetration greatly, and the novel water glass infiltration water-resisting agent that endurance quality is good.
The present invention for the taked technical scheme that solves the problem is:
A kind of novel water glass infiltration water-resisting agent, is made up of each component of following weight: water glass 500 ~ 550 parts, potassium aluminium sulfate 4 ~ 8 parts, 3 ~ 6 parts, copper sulfate, Zinic stearas 5 ~ 10 parts, calcium stearate 5 ~ 10 parts, 30 ~ 40 parts, diatomite, aluminium powder 4 ~ 9 parts, aluminium iron polychloride 1 ~ 5 part, talcum powder 2 ~ 7 parts, calcium formiate 2 ~ 5 parts, sodium lignosulfonate 2 ~ 6 parts, 400 ~ 450 parts, water.
Its weight is as follows:
Water glass 525 parts, potassium aluminium sulfate 6 parts, 5 parts, copper sulfate, Zinic stearas 8 parts, calcium stearate 8 parts, 35 parts, diatomite, aluminium powder 7 parts, aluminium iron polychloride 3 parts, talcum powder 5 parts, calcium formiate 4 parts, sodium lignosulfonate 4 parts, 425 parts, water.
In order to effectively improve the depth of penetration of infiltration water-resisting agent, water glass modulus of the present invention is 1.2 ~ 1.8.
Preferably, the modulus of described water glass is 1.5.
In order to effectively improve the water resistance of infiltration water-resisting agent, aluminium powder order number of the present invention is 200 ~ 300.
In the present invention, the hydrated product of water glass and inside concrete reacts, and generates Silica hydrogel, and these Silica hydrogel fill original for inside concrete capillary channel and micro gap get up, thus improve the density of concrete within the scope of depth of penetration.In addition, these Silica hydrogel also have certain constraint ability, can fetter the water being free in inside concrete, thus the impact that minimizing water causes concrete, improve concrete durability, extend concrete life.By adding potassium aluminium sulfate and copper sulfate protects Silica hydrogel, making the stable colloidal solutions of its integrated larger particles, being filled in the middle of concrete pore, improving concrete impervious water resistance.
Zinic stearas, calcium stearate have good water resistance and oilness.Because they not only can make the capillary wall in concrete forms water-repellent layer, insoluble substance can also be generated with the compound in concrete, cut off infiltration water route, thus improve concrete water resistance.In addition, their lubrication, can reduce the viscosity of water glass, thus improves the mobility of water-resisting agent moiety, and then improves seepage velocity and the speed of reaction of water-resisting agent.Moreover when concrete runs into acid erosion, Zinic stearas, calcium stearate can act on acid, generate stearic acid.And stearic acid is a kind of good tensio-active agent, the reaction each other of concrete mineral compound can be intensified, thus improve concrete durability.In addition, Zinic stearas also has delayed coagulation to concrete, slow down water glass congealing reaction speed, improves depth of penetration, and then decreases the cracking that the temperature difference brings.But calcium stearate is concrete provides calcium ion, increase calcium ion concn in concrete, thus promote the reaction that in concrete, relevant calcium ion participates in, raising concrete durability.
Diatomaceous main chemical compositions is silicon-dioxide.Silicon-dioxide have high temperature resistant, acidproof, thermal expansivity is low, corrosion resistant characteristic, this is Concrete Structure weather resistance widely.In addition, because the siloxane bond constructional feature of silicon-dioxide makes it have very strong surface tension, a large amount of water moleculess can be adsorbed, improve concrete water-proof performance.Moreover, diatomite or a kind of porous material, there is the features such as porosity is large, absorptivity strong, stable chemical nature, excellent surface adsorption water molecules and ionic nature can be provided for concrete, simultaneously diatomite can also by the material storage of absorption therein, and when concrete lacks water by the substance release that adsorbs out.Because diatomite has this feature, therefore diatomite can increase concrete self water-preserving curing function, reduces the cracking that concrete causes because of lack of water; The material of release can also be utilized to regulate the concentration of water glass simultaneously, reduce its viscosity, improve the mobility of mixture, thus increase the concrete impervious degree of depth, and then improve endurance performance of concrete.
Aluminium powder can be filled in concrete pore on the one hand, improves concrete density, thus improves concrete water-proof performance; On the other hand, aluminium powder can permeate inside concrete together along with water-resisting agent, and be deposited on the lower floor of Silica hydrogel waterproof layer or be suspended in centre, play physical property iris action, the matter that can intercept moisture and have a corrosive goods, through waterproof layer, strengthens water tolerance and the anti-corrosion capability of waterproof layer further.
When aluminium iron polychloride runs into water in concrete, can have an effect with water, generate closely knit alumen ustum, be filled in the concrete voids within the scope of depth of penetration, block water and gas pickling, thus improve concrete durability.
Talcum powder is a kind of good lubricant, serves and accelerates the effect of water-resisting agent each moiety velocity of flow, and then increase depth of penetration scope, improve concrete durability in concrete.
Calcium formiate is a kind of white or yellow mobility powder, has and accelerates hydrated cementitious speed, play katalysis and certain water-reduction.Because its mobility is relatively good, water-resisting agent velocity of flow can be accelerated, improve depth of penetration.In addition, calcium formiate can also improve the concentration of calcium ion in concrete.The formation of concrete ettringite double salt can not only be accelerated like this, improve concrete water-proof performance, but also Calucium Silicate powder dissolution rate can be accelerated, impel homo-ion generation crystallization, increase solid phase ratio in concrete, promote the formation of water mudrock structure, improve concrete durability.
Sodium lignosulfonate has very strong dispersion and lubricity, can accelerate the uniform acceleration of mixture, thus makes mixture and concrete react more abundant, improves concrete performance.In addition, because the hydrophobic group energy oriented adsorption of sodium lignosulfonate is in the surface of cement granules, hydrophilic radical points to the aqueous solution, constitute unit molecule or polymolecular adsorption film, cement granules is disperseed because surperficial identical charges mutually repels, unnecessary moisture is discharged, to reach the object of diminishing between particle.Therefore, sodium lignosulfonate plays the effect of water reducer in concrete, can reduce concrete aquation significantly, reduces porosity, increases concrete density, thus greatly improves concrete intensity and impermeability, improves concrete durability.
Described water-resisting agent is before construction, and reply needs the concrete base layer surface of waterproof to carry out deashing, repairing, levelling, keep basic unit moistening, without open fire.During construction, can adopt spraying, to brush or the mode of roller coat is directly applied to and needs on the basal plane of waterproof, overcoating brush of laying equal stress on is to certain thickness, and maintenance 3 days or more.
The invention has the beneficial effects as follows:
The present invention mainly make use of Zinic stearas, calcium stearate, talcum powder, the lubrication of sodium lignosulfonate and the mobility of calcium formiate, improves the viscosity of water glass, thus improves water-resisting agent depth of penetration, improves endurance performance of concrete.Also utilize Silica hydrogel waterproof layer that water glass formed and the water-repellent layer that Zinic stearas, calcium stearate are formed simultaneously, improve concrete water-proof performance widely.Moreover the present invention also applies diatomaceous porosity characteristic, the iris action of aluminium powder, aluminium iron polychloride and water effect, the crystallization of calcium formiate, the water-reduction of sodium lignosulfonate, improves endurance performance of concrete.Water-resisting agent depth of penetration disclosed in this invention is large, and endurance quality is good, can be applicable to the waterproof of roofing, vault and toilet etc.
Embodiment
Embodiment 1
Present embodiment discloses a kind of novel water glass infiltration water-resisting agent, be made up of each component of following weight: water glass 525 parts, potassium aluminium sulfate 6 parts, 5 parts, copper sulfate, Zinic stearas 8 parts, calcium stearate 8 parts, 35 parts, diatomite, aluminium powder 7 parts, aluminium iron polychloride 3 parts, talcum powder 5 parts, calcium formiate 4 parts, sodium lignosulfonate 4 parts, 425 parts, water.
Embodiment 2
Present embodiment discloses a kind of novel water glass infiltration water-resisting agent, be made up of each component of following weight: water glass 500 parts, potassium aluminium sulfate 4 parts, 3 parts, copper sulfate, Zinic stearas 5 parts, calcium stearate 5 parts, 40 parts, diatomite, aluminium powder 9 parts, aluminium iron polychloride 5 parts, talcum powder 7 parts, calcium formiate 5 parts, sodium lignosulfonate 2 parts, 450 parts, water.
Embodiment 3
Present embodiment discloses a kind of novel water glass infiltration water-resisting agent, be made up of each component of following weight: water glass 550 parts, potassium aluminium sulfate 8 parts, 6 parts, copper sulfate, Zinic stearas 10 parts, calcium stearate 10 parts, 30 parts, diatomite, aluminium powder 4 parts, aluminium iron polychloride 1 part, talcum powder 2 parts, calcium formiate 2 parts, sodium lignosulfonate 6 parts, 400 parts, water.
Embodiment 4
Present embodiment discloses a kind of novel water glass infiltration water-resisting agent, be made up of each component of following weight: water glass 510 parts, potassium aluminium sulfate 5 parts, 4 parts, copper sulfate, Zinic stearas 7 parts, calcium stearate 7 parts, 38 parts, diatomite, aluminium powder 8 parts, aluminium iron polychloride 4 parts, talcum powder 6 parts, calcium formiate 3 parts, sodium lignosulfonate 5 parts, 440 parts, water.
Embodiment 5
Present embodiment discloses a kind of novel water glass infiltration water-resisting agent, be made up of each component of following weight: water glass 540 parts, potassium aluminium sulfate 7 parts, 5 parts, copper sulfate, Zinic stearas 9 parts, calcium stearate 9 parts, 32 parts, diatomite, aluminium powder 6 parts, aluminium iron polychloride 2 parts, talcum powder 4 parts, calcium formiate 4 parts, sodium lignosulfonate 3 parts, 410 parts, water.
The water resistance of applicant to novel water glass infiltration water-resisting agent is tested, and result is as shown in table 1.
The performance test results of table 1 novel water glass infiltration water-resisting agent
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 (5)
1. a novel water glass infiltration water-resisting agent, is characterized in that: be made up of each component of following weight: water glass 500 ~ 550 parts, potassium aluminium sulfate 4 ~ 8 parts, 3 ~ 6 parts, copper sulfate, Zinic stearas 5 ~ 10 parts, calcium stearate 5 ~ 10 parts, 30 ~ 40 parts, diatomite, aluminium powder 4 ~ 9 parts, aluminium iron polychloride 1 ~ 5 part, talcum powder 2 ~ 7 parts, calcium formiate 2 ~ 5 parts, sodium lignosulfonate 2 ~ 6 parts, 400 ~ 450 parts, water.
2. novel water glass infiltration water-resisting agent according to claim 1, is characterized in that: its weight is as follows: water glass 525 parts, potassium aluminium sulfate 6 parts, 5 parts, copper sulfate, Zinic stearas 8 parts, calcium stearate 8 parts, 35 parts, diatomite, aluminium powder 7 parts, aluminium iron polychloride 3 parts, talcum powder 5 parts, calcium formiate 4 parts, sodium lignosulfonate 4 parts, 425 parts, water.
3. novel water glass infiltration water-resisting agent according to claim 1, is characterized in that: described water glass modulus is 1.2 ~ 1.8.
4. novel water glass infiltration water-resisting agent according to claim 3, is characterized in that: described water glass modulus is 1.5.
5. novel water glass infiltration water-resisting agent according to claim 1, is characterized in that: described aluminium powder order number is 200 ~ 300.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510598103.7A CN105236919A (en) | 2015-09-16 | 2015-09-16 | Novel sodium silicate penetration waterproofing agent |
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| CN201510598103.7A CN105236919A (en) | 2015-09-16 | 2015-09-16 | Novel sodium silicate penetration waterproofing agent |
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| CN201510598103.7A Pending CN105236919A (en) | 2015-09-16 | 2015-09-16 | Novel sodium silicate penetration waterproofing agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967626A (en) * | 2016-05-18 | 2016-09-28 | 常德市万福达环保节能建材有限公司 | Capillary crystalline type concrete waterproof agent |
| CN111196711A (en) * | 2020-01-17 | 2020-05-26 | 甘肃朗坤防水材料有限公司 | Waterproof building material and preparation method thereof |
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| KR101033652B1 (en) * | 2010-11-22 | 2011-05-12 | (주)온테크 | Manufacturing method of liquid composition for water-proof in concrete and concrete composition using the same |
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| US5246495A (en) * | 1992-03-05 | 1993-09-21 | Loc Systems, Ltd. (Lp) | Material for improving the strength of cementitious material |
| CN101597478A (en) * | 2008-06-04 | 2009-12-09 | 俞金波 | Waterglass waterproof agent |
| KR101033652B1 (en) * | 2010-11-22 | 2011-05-12 | (주)온테크 | Manufacturing method of liquid composition for water-proof in concrete and concrete composition using the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105967626A (en) * | 2016-05-18 | 2016-09-28 | 常德市万福达环保节能建材有限公司 | Capillary crystalline type concrete waterproof agent |
| CN111196711A (en) * | 2020-01-17 | 2020-05-26 | 甘肃朗坤防水材料有限公司 | Waterproof building material and preparation method thereof |
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