CN100506736C - Highly-effective anti-cracking waterproofing agent and production method thereof - Google Patents
Highly-effective anti-cracking waterproofing agent and production method thereof Download PDFInfo
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- CN100506736C CN100506736C CN 200710067988 CN200710067988A CN100506736C CN 100506736 C CN100506736 C CN 100506736C CN 200710067988 CN200710067988 CN 200710067988 CN 200710067988 A CN200710067988 A CN 200710067988A CN 100506736 C CN100506736 C CN 100506736C
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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
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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Abstract
The invention discloses a anticracking water proofer, which comprises the following steps: 1) allocating component and mass content as 60%-76% activatable zeolitic powder, 5%-15% silica ash, 3%-8% calcium oxide, 3%-8% magnesium oxide, 3%-8% anhydrous sodium sulfate, 2%-6% cement group osmosis crystallization masterbatch, 1. 0%-3. 0% silane coupling agent, 2%-4% high-strength high elasticity modulus polyethelene alcohol fibre and 5%-8% naphthalene system highly effective dehydragent; mixing the activatable zeolitic powder and the silane coupling agent; proceeding modified reaction; getting modified powder; 2) cooling the modified powder; adding into the silica ash, calcium oxide, magnesium oxide, anhydrous sodium sulfate, cement group osmosis crystallization masterbatch and naphthalene system highly effective dehydragent; mixing; getting mixture; 3) putting the mixture into zero gravity agitator; adding into high-strength high elasticity modulus polyethelene alcohol fibre; stirring to non-cluster. This invention possesses good dewatering property and high crack resistance.
Description
Technical field
The present invention relates to a kind of concrete admixture that is applied to, particularly a kind of anti-cracking waterproofing agent.
Background technology
Protection buildings and structure are not subjected to the intrusion of wet G﹠W, and be very important for the weather resistance that improves buildings.For concrete and the structure of building by laying bricks or stones, the existence of moisture and migration usually are the major reasons that bad variation takes place the performance of structure.Simultaneously, moisture can cause the destruction on concrete and the masonry structure performance equally as the important media of works internal delivery soluble constituent.For example, the Signs of Mould of carbonization, steel bar corrosion, freeze-thaw damage and the body of wall of concrete and mortar is all with the existence of water with move relevant.In recent years, building masonry wall adopts the self-heat conserving system or does composite heat-insulating layer when playing good function of heat insulation in wall outer side, but these all must solve impervious and waterproof problem.This shows that developing concrete highly-effective anti-cracking waterproofing agent is very necessary for the construction quality and the durability of structures that improve buildings.
Construction industry is used in reality, requires concrete to have good operation (mobile, water-retentivity and cohesiveness), suitable intensity and good volume stability (shrink little, splitting resistance good), has impervious and water-proof function.But traditional concrete is made up of cement, sand, rubble and water, and above-mentioned performance is not good; Therefore need add certain admixture in traditional concrete could realistic service requirements.
The present concrete anti-cracking waterproofing agent that generally adopts, many admixtures such as rigid waterproofing agent, swelling agent, air entrapment agent or water reducer based on liquid or powder shaped.Such material all is rigidity characteristic, is helpless to fundamentally improve the fragility of concrete and goods thereof.Thereby, with the anti-crack concrete of configuration such as common water-resisting agent, swelling agent, air entrapment agent or water reducer, its cracking resistance, anti-folding, shock resistance and weather-proof, endurance quality is not good enough, causes the seepage chronic disease of China's building to be controlled repeatly and is unable to, expensive consumptive material is huge.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of concrete anti-cracking waterproofing agent that is applied to, and has used concrete behind this kind anti-cracking waterproofing agent to have that hydrophobic performance is good, the resistance to cleavage advantages of higher.
In order to solve the problems of the technologies described above, the invention provides a kind of highly-effective anti-cracking waterproofing agent, its component and weight content are: active zeolite powder 60%～76%, silicon ash 5%～15%, calcium oxide 3%～8%, magnesium oxide 3%～8%, anhydrous sodium sulphate 3%～8%, cement-base infiltration crystallization masterbatch 2%～6%, silane coupling agent 1.0%～3.0%, high-strength high elasticity modules polyethylene alcohol fiber 2%～4% and naphthalene series high-efficiency water-reducing agent 5%～8%.
Improvement as anti-cracking waterproofing agent of the present invention: the active zeolite powder is that pore size is that the zeolite of 400～600 nanometers is levigate to 150～250 orders, removes the crystal water gained in 800～900 ℃ ultrahigh-temperature again.Diameter 18～20 μ m of high-strength high elasticity modules polyethylene alcohol fiber, long 8～12mm.The silicon ash is 7000～10000 purpose silicon ashes.Described silane coupling agent is sodium lauryl sulphate, Sodium dodecylbenzene sulfonate or silylation matrix material.Zeolite is clinoptilolite or mordenite.
The present invention also provides the production method of above-mentioned anti-cracking waterproofing agent, may further comprise the steps:
1), drop in the physical reaction still behind active zeolite powder and the silane coupling agent uniform mixing, is warming up to 150～180 ℃, modified-reaction 10～30min under constant temperature; Get the modification powder;
2), above-mentioned modification powder is put into the cooling tank internal cooling to room temperature, add silicon ash, calcium oxide, magnesium oxide, anhydrous sodium sulphate, cement-base infiltration crystallization masterbatch and naphthalene series high-efficiency water-reducing agent then successively and carry out uniform mixing; Get compound;
3), above-mentioned compound is put into agravic stirrer, and then add high-strength high elasticity modules polyethylene alcohol fiber and evenly stir until no conglomeration; Get anti-cracking waterproofing agent.
The all components that uses in the anti-cracking waterproofing agent of the present invention is the commercially available prod.For example: the ITE.K-11 that the cement-base infiltration crystallization masterbatch can select for use American I TE international corporation to produce; Naphthalene series high-efficiency water-reducing agent can be selected the ZX-3 high efficiency water reducing agent that glad concrete admixture company limited produces in ZWL-V1 type high efficiency water reducing agent that Zhejiang Province Wulong Chemical Co., Ltd produces, the Zhejiang Hangzhou for use; The PVA fiber that high-strength high elasticity modules polyethylene alcohol fiber can select for use Lanzhou Ni Weilong FCFC to produce; The silylation matrix material that belongs to silane coupling agent can be selected the SEAL80 silane hydrophobic powder of national starch company, the SWWP100 silane hydrophober of the three-dimensional company in Shanxi for use.
The step 2 of production method of the present invention) room temperature in refers generally to 0 ℃～40 ℃.
Anti-cracking waterproofing agent of the present invention, the detailed following statement of the effect of its various components:
1, exists a large amount of pore passage structures in the zeolite crystalline network, these pore passage structures have increased the outer surface area of zeolite not to the utmost, increased its contact area, promptly strengthened the ability of materials such as the outside surface absorption positively charged ion of zeolite and water molecules for materials such as extraneous positively charged ion and water moleculess; Also increased the internal surface area of zeolite simultaneously, thereby made zeolite and be stored in its inside, and when ambient conditions changes, these material desorptions have been discharged many material absorption.
Zeolite has the effect that can strengthen concrete performance, and is not only relevant with its pore passage structure, also relevant with cationic content in the zeolite, also promptly relevant with the chemical ingredients of zeolite.The main component of zeolite is a silicon-dioxide, and the bond structure characteristics of silicon-dioxide make its surface have a large amount of available electrons, thereby makes purified silica sphere have very high surface tension, can adsorb a large amount of water moleculess and low price minor radius positively charged ion.
Therefore in the present invention, the active zeolite powder is remarkable for the water resistance effect that improves concrete structure, can also alleviate concrete bleeding, improves its later strength.Can make that the concrete hydrating of having mixed anti-cracking waterproofing agent of the present invention is more complete, structure is more closely knit; Thereby make concrete have good alkali resistant aggregate reaction ability, endurance quality obviously improves.
2, anti-cracking waterproofing agent of the present invention therefore at the aquation initial stage that reality is used, can generate gelatinous Ca (OH) owing to contain calcium oxide and magnesium oxide in concrete particle skeleton gap
2And Mg (OH)
2, and produce expansion in advance; Then generate hardened Ca (OH)
2And Mg (OH)
2Recrystallization takes place, the beginning late expansion; Up to Ca (OH)
2And Mg (OH)
2Crystallization all changes into big different square, and expansion reaction just finishes.Its major advantage is that early expansion is not very big, expands but be retardance for the concrete later stage, and therefore the temperature drop for compensating concrete shrinks very favourable.
3, the selected anhydrous sodium sulphate of the present invention is mixed the formed gelatinous material in back to anti-cracking waterproofing agent of the present invention and concrete and is mainly played and excite enhancement, and the serviceability of gelatinous material is also had the improvement effect.
4, the present invention is owing to contain silane coupling agent; therefore after anti-cracking waterproofing agent of the present invention is incorporated in the concrete and adds water and mix; the protective colloid shell of silane coupling agent can be dissolved in water rapidly and discharge the silane that is wrapped; make silane can be distributed in the concrete; therefore it is wetting rapidly to guarantee that concrete is able to, and has promptly given concrete splendid mix performance.And common water-resisting agent can produce obstruction to moistening process, thereby makes the concrete degradation that mixes and stirs.
Under concrete high alkalinity environment, hydrophilic organo-functional group meeting hydrolysis forms the silanol of high reaction activity in the silane, silanol can be carried out irreversible reaction with the oh group in the concrete hydrated product and be formed Chemical bond, thereby makes the silane that links together by the commissure effect be securely fixed in the surface of concrete hole wall.Because hydrophobic organo-functional group towards the outside of hole wall, makes the surface of hole wall obtain hydrophobic nature, has brought hydrophobic effect persistent, globality for concrete thus.The low amounts of product that silane coupling agent discharges after the hydrolysis in concrete is an ethanol, and environment is safe from harm.
5, the PVA fiber that is contained in the anti-cracking waterproofing agent of the present invention (high-strength high elasticity modules polyethylene alcohol fiber) is a kind of macromolecular material that adopts the fiber making equipment, makes with high-quality synthetic resins raw material, its have good intensity, dispersiveness and with the cohesiveness of concrete substrate.The PVA fiber as in concrete, mix several hundred million three-dimensional disorderly to the fine ribs of substep, so the PVA fiber can play the inhibition concrete cracking, reaches the purpose of improving concrete performance.And characteristics such as the PVA fiber has good dispersity, diameter is little, weather resistance is high, bond stress is strong, Environmental Safety.
6, the selected naphthalene series high-efficiency water-reducing agent of the present invention can make the concrete water reducing ability strengthen, and improves flowability and pumpability.
7, the present invention has made full use of the alkali adsorptivity of zeolite and to the absorption property of heavy metal element, has also utilized the active ion switching performance of zeolite, has utilized the acid-fast alkali-proof performance of zeolite, has utilized high temperature resistant low temperature resistant (weather-proof) performance of zeolite.Vesicular structure, hypertonicity, hydrophilic zeolite are a kind of hydrophobic hydrophobic materials through the modification powder of silane coupler modified gained.
In sum, anti-cracking waterproofing agent of the present invention has effects such as water-keeping thickening, compensate for shrinkage, closely knit enhancing, anti-cracking impervious and hydrophobic waterproof.Can be widely used in various water-tight concrete engineerings, self-waterproof concrete pipe fitting, from the building block of waterproof light-weight aggregate, from water-proof heat-insulation material and all kinds of lagging material, or buildings and the structures in using are carried out waterproof repairment.Anti-cracking waterproofing agent of the present invention, can remedy existing rigid waterproofing repellant firmly have a surplus, defective such as pliable and tough deficiency, and can solve difficult problems such as the resistance to deformation of existing admixture in buildings waterproof (comprising that structure is from waterproof) engineering is used, anti-shrinkage cracking, hydrophobic hydrophobic performance difference.
Anti-cracking waterproofing agent of the present invention, its performance index are as shown in table 1:
Table 1, homogeneity index
| Sequence number | Test event | Performance index | Measured result |
| 1 | Water ratio, % | ≤3.0 | 0.8 |
| 2 | Total alkali content (Na 2O+0.658K 2O) | ≤4 | 2.78 |
| 3 | Chloride ion content, % | ≤0.10 | 0.016 |
| 4 | Fineness (0.315mm tails over) | ≤3 | 2.2 |
| 5 | The ammonia burst size | ≤0.1 | <0.01 |
| 6 | Interior according to index | ≤1.0 | 0.1 |
| 7 | Outer according to index | ≤1.0 | 0.5 |
In order fully to prove the advantage of anti-cracking waterproofing agent of the present invention, detect through national building materials test center, when its during for 5% (in mix) of gelatinous material weight, it is as shown in table 2 to be examined concrete performance index:
Table 2, examined concrete performance index
In sum, anti-cracking waterproofing agent of the present invention meets the requirement of relevant national standards, and it has the effect that reduces hydration heat and delay hydration reaction, also has the function of absorption free alkali, and has inhibition alkali-aggregate reaction effect.It meets ammonia and discharges the requirement of limiting the quantity of, and also meets the requirement that nucleic is limited the quantity of; Therefore can large-scale promotion use, belong to green material.
Embodiment
Embodiment 1, a kind of anti-cracking waterproofing agent, its component and weight content are: active zeolite powder 62%, silicon ash 5%, calcium oxide 4%, magnesium oxide 4%, anhydrous sodium sulphate 7%, cement-base infiltration crystallization masterbatch 5%, sodium lauryl sulphate 3%, high-strength high elasticity modules polyethylene alcohol fiber 3% and naphthalene series high-efficiency water-reducing agent 7%.
Specific requirement to said components is as follows:
The active zeolite powder is that pore size is that the clinoptilolite of 400 nanometers is levigate to 150 orders, removes the crystal water gained in 800 ℃ ultrahigh-temperature again.Diameter 18 μ m, the long 8mm of high-strength high elasticity modules polyethylene alcohol fiber.The silicon ash is 7000 purpose silicon ashes.
The production method of above-mentioned anti-cracking waterproofing agent is to carry out following steps successively:
1), with dropping into behind active zeolite powder and the sodium lauryl sulphate uniform mixing in the physical reaction still, be warming up to 150 ℃, modified-reaction 30min under 150 ℃ of constant temperatures; Get the modification powder;
2), above-mentioned modification powder is put into the cooling tank internal cooling to room temperature, add silicon ash, calcium oxide, magnesium oxide, anhydrous sodium sulphate, cement-base infiltration crystallization masterbatch and naphthalene series high-efficiency water-reducing agent then successively and carry out uniform mixing; Get compound;
3), above-mentioned compound is put into agravic stirrer, and then add high-strength high elasticity modules polyethylene alcohol fiber and evenly stir until no conglomeration; Get anti-cracking waterproofing agent.
Embodiment 2, a kind of anti-cracking waterproofing agent, its component and weight content are: active zeolite powder 60%, silicon ash 13%, calcium oxide 3%, magnesium oxide 7%, anhydrous sodium sulphate 4%, cement-base infiltration crystallization masterbatch 3%, Sodium dodecylbenzene sulfonate 2.0%, high-strength high elasticity modules polyethylene alcohol fiber 2% and naphthalene series high-efficiency water-reducing agent 6%.
Specific requirement to said components is as follows:
The active zeolite powder is that pore size is that the mordenite of 500 nanometers is levigate to 200 orders, removes the crystal water gained in 850 ℃ ultrahigh-temperature again.Diameter 19 μ m, the long 10mm of high-strength high elasticity modules polyethylene alcohol fiber.The silicon ash is 9000 purpose silicon ashes.
The production method of above-mentioned anti-cracking waterproofing agent is to carry out following steps successively:
1), with dropping into behind active zeolite powder and the Sodium dodecylbenzene sulfonate uniform mixing in the physical reaction still, be warming up to 170 ℃, modified-reaction 20min under 170 ℃ of constant temperatures; Get the modification powder;
2), above-mentioned modification powder is put into the cooling tank internal cooling to room temperature, add silicon ash, calcium oxide, magnesium oxide, anhydrous sodium sulphate, cement-base infiltration crystallization masterbatch and naphthalene series high-efficiency water-reducing agent then successively and carry out uniform mixing; Get compound;
3), above-mentioned compound is put into agravic stirrer, and then add high-strength high elasticity modules polyethylene alcohol fiber and evenly stir until no conglomeration; Get anti-cracking waterproofing agent.
Embodiment 3, a kind of anti-cracking waterproofing agent, its component and weight content are: active zeolite powder 70%, silicon ash 6%, calcium oxide 6.5%, magnesium oxide 3%, anhydrous sodium sulphate 3%, cement-base infiltration crystallization masterbatch 2%, silylation matrix material 1%, high-strength high elasticity modules polyethylene alcohol fiber 3.5% and naphthalene series high-efficiency water-reducing agent 5%.
Specific requirement to said components is as follows:
The active zeolite powder is that pore size is that the clinoptilolite of 600 nanometers is levigate to 250 orders, removes the crystal water gained in 900 ℃ ultrahigh-temperature again.Diameter 20 μ m, the long 12mm of high-strength high elasticity modules polyethylene alcohol fiber.The silicon ash is 10000 purpose silicon ashes.
The production method of above-mentioned anti-cracking waterproofing agent is to carry out following steps successively:
1), with dropping into behind active zeolite powder and the silylation matrix material uniform mixing in the physical reaction still, be warming up to 180 ℃, modified-reaction 10min under 180 ℃ of constant temperatures; Get the modification powder;
2), above-mentioned modification powder is put into the cooling tank internal cooling to room temperature, add silicon ash, calcium oxide, magnesium oxide, anhydrous sodium sulphate, cement-base infiltration crystallization masterbatch and naphthalene series high-efficiency water-reducing agent then successively and carry out uniform mixing; Get compound;
3), above-mentioned compound is put into agravic stirrer, and then add high-strength high elasticity modules polyethylene alcohol fiber and evenly stir until no conglomeration; Get anti-cracking waterproofing agent.
At last, it is also to be noted that what more than enumerate only is several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (7)
1, a kind of anti-cracking waterproofing agent, its component and weight content are: active zeolite powder 60%～76%, silicon ash 5%～15%, calcium oxide 3%～8%, magnesium oxide 3%～8%, anhydrous sodium sulphate 3%～8%, cement-base infiltration crystallization masterbatch 2%～6%, silane coupling agent 1.0%～3.0%, high-strength high elasticity modules polyethylene alcohol fiber 2%～4% and naphthalene series high-efficiency water-reducing agent 5%～8%.
2, anti-cracking waterproofing agent according to claim 1 is characterized in that: described active zeolite powder is that pore size is that the zeolite of 400～600 nanometers is levigate to 150～250 orders, removes the crystal water gained in 800～900 ℃ ultrahigh-temperature again.
3, anti-cracking waterproofing agent according to claim 1 and 2 is characterized in that: diameter 18～20 μ m of high-strength high elasticity modules polyethylene alcohol fiber, long 8～12mm.
4, anti-cracking waterproofing agent according to claim 3 is characterized in that: described silicon ash is 7000～10000 purpose silicon ashes.
5, anti-cracking waterproofing agent according to claim 4 is characterized in that: described silane coupling agent is sodium lauryl sulphate or Sodium dodecylbenzene sulfonate.
6, anti-cracking waterproofing agent according to claim 5 is characterized in that: described zeolite is clinoptilolite or mordenite.
7,, it is characterized in that may further comprise the steps as the production method of any one anti-cracking waterproofing agent in the claim 1～6:
1), drop in the physical reaction still behind active zeolite powder and the silane coupling agent uniform mixing, is warming up to 150～180 ℃, modified-reaction 10～30min under constant temperature; Get the modification powder;
2), above-mentioned modification powder is put into the cooling tank internal cooling to room temperature, add silicon ash, calcium oxide, magnesium oxide, anhydrous sodium sulphate, cement-base infiltration crystallization masterbatch and naphthalene series high-efficiency water-reducing agent then successively and carry out uniform mixing; Get compound;
3), above-mentioned compound is put into agravic stirrer, and then add high-strength high elasticity modules polyethylene alcohol fiber and evenly stir until no conglomeration; Get anti-cracking waterproofing agent.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624482B (en) * | 2009-08-13 | 2012-07-18 | 沈阳化工学院 | Preparation method of taking modified clinoptilolite as rubber reinforcing agent |
| CN103102119B (en) * | 2011-11-10 | 2015-08-26 | 比亚迪股份有限公司 | A kind of stiffening agent and preparation method thereof |
| CN102745972B (en) * | 2012-07-26 | 2014-11-26 | 深圳市科中大绿色永久防水材料有限公司 | Directly-sprayable high-performance waterproof material and preparation method thereof |
| CN104108898A (en) * | 2014-06-25 | 2014-10-22 | 芜湖市三兴混凝土外加剂有限公司 | Concrete waterproof agent |
| CN104402289B (en) * | 2014-11-26 | 2016-05-18 | 金华市欣生沸石开发有限公司 | A kind of zeolite cement mortar waterproof agent and preparation method |
| CN104926193A (en) * | 2015-06-29 | 2015-09-23 | 湖州华仑助剂科技有限公司 | Concrete waterproof agent |
| CN105174777A (en) * | 2015-09-16 | 2015-12-23 | 桂林市和鑫防水装饰材料有限公司 | Quick-setting waterproofing agent and preparation method thereof |
| CN112142437B (en) * | 2020-09-14 | 2022-03-18 | 安徽朗凯奇防水科技股份有限公司 | Cement-based capillary crystalline waterproof material and preparation method thereof |
| CN112358219B (en) * | 2020-11-25 | 2022-09-20 | 河北美创新材料科技有限公司 | Impervious rigid waterproof agent and preparation process thereof |
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Address after: No. two, Lane 3, powder Road, Hengdian village, Jiangdong Town, Jindong District, Zhejiang, Jinhua Patentee after: Yu Xixian Address before: No. 1, building 477, building 201, Wensanlu Road, Zhejiang, Hangzhou, Xihu District Patentee before: Yu Xixian |