CN100509684C - Anti-cracking impervious agent and production method thereof - Google Patents
Anti-cracking impervious agent and production method thereof Download PDFInfo
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- CN100509684C CN100509684C CN 200710067987 CN200710067987A CN100509684C CN 100509684 C CN100509684 C CN 100509684C CN 200710067987 CN200710067987 CN 200710067987 CN 200710067987 A CN200710067987 A CN 200710067987A CN 100509684 C CN100509684 C CN 100509684C
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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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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a highly effective anticracking impervious agent, which comprises the following steps: 1) allocating component and mass content as 60%-80% activatable zeolitic powder, 5%-15% silica ash, 3%-8% calcium oxide, 3%-8% magnesium oxide, 3%-8% anhydrous sodium sulfate, 0. 1%-0. 3% cethylose ether, 1. 0%-3. 0% silane coupling agent and 2%-4% high-strength high elasticity modulus polyethelene alcohol fibre; putting the activatable zeolitic powder and the silane coupling agent into the autoclave; proceeding modified reaction; getting modified powder; 2) putting into cooling tank; cooling to room temperature; adding into the silica ash, the calcium oxide, the magnesium oxide, the anhydrous sodium sulfate and metyl group the cellulose ether; proceeding mix; getting mixture; 3) putting the mixture into zero gravity agitator; adding into the high-strength high elasticity modulus polyethelene alcohol fibre; stirring evenly to non-cluster. This invention possesses good dewatering property and high crack resistance.
Description
Technical field
The present invention relates to a kind of admixture that is applied to mortar, particularly a kind of anti-cracking impervious 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 the highly-effective anti-cracking impervious agent of development commodity mortar is very necessary for the construction quality and the durability of structures that improve buildings.
Construction industry is used in reality, requires mortar to have good operation (denseness, water-retentivity and time of coagulation meet the demands), suitable intensity and volume stability (shrink little, splitting resistance good), has impervious and water-proof function.But traditional mortar is made up of cement, lime putty, sand and water, does not possess above-mentioned performance; Therefore need add certain admixture in traditional mortar could realistic service requirements.
The anti-cracking impervious agent of the present mortar concrete 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 mortar concrete and goods thereof.Thereby, with the anticracking grout 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 anti-cracking impervious agent that is applied to mortar, has used mortar behind this kind anti-cracking impervious 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 impervious agent, its component and weight content are: active zeolite powder 60%～80%, silicon ash 5%～15%, calcium oxide 3%～8%, magnesium oxide 3%～8%, anhydrous sodium sulphate 3%～8%, methyl cellulose ether 0.1%～0.3%, silane coupling agent 1.0%～3.0% and high-strength high elasticity modules polyethylene alcohol fiber 2%～4%.
Improvement as anti-cracking impervious 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 3～6mm.The silicon ash is 7000～10000 purpose silicon ashes.Silane coupling agent is sodium lauryl sulphate, Sodium dodecylbenzene sulfonate or silylation matrix material.Zeolite is clinoptilolite or mordenite.
The invention also discloses the production method of above-mentioned anti-cracking impervious 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 and methyl cellulose ether 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 impervious agent.
The step 2 of production method of the present invention) room temperature in refers generally to 0 ℃～40 ℃.
Anti-cracking impervious 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 mortar 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 anti-permeability performance effect that improves the mortar structure, can also alleviate the bleeding of mortar, improves its later strength.Can make that the mortar aquation of having mixed anti-cracking impervious agent of the present invention is more complete, structure is more closely knit; Thereby make mortar have good alkali resistant aggregate reaction ability, endurance quality obviously improves.
2, anti-cracking impervious 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 mortar grain 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 mortar later stage, and therefore the temperature drop for the compensation mortar shrinks very favourable.
3, the selected anhydrous sodium sulphate of the present invention is mixed the formed gelatinous material in back to anti-cracking impervious agent of the present invention and mortar and is mainly played and excite enhancement, and the serviceability of gelatinous material is also had the improvement effect.
4, the methyl cellulose ether that is contained in the anti-cracking impervious agent of the present invention, its viscosity is 30000～40000MPa.s, mainly plays thickening and the guarantor moulds effect.
5, the present invention is owing to contain silane coupling agent; therefore after anti-cracking impervious agent of the present invention is incorporated in the mortar 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 mortar; therefore it is wetting rapidly to guarantee that dry mortar is able to, and has promptly given mortar splendid mix performance.And common water-resisting agent can produce obstruction to moistening process, thereby makes the degradation that mixes and stirs of mortar.
Under mortar 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 and be formed Chemical bond with the oh group in the hydrated product of mortar, thereby makes the silane that links together by the commissure effect be securely fixed in the surface of mortar 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 mortar thus.The low amounts of product that silane coupling agent discharges after the hydrolysis in mortar is an ethanol, and environment is safe from harm.
6, the PVA fiber that is contained in the anti-cracking impervious 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 mortar matrix.The PVA fiber as in mortar, mix several hundred million three-dimensional disorderly to the fine ribs of substep, so the PVA fiber can play and suppress the mortar cracking, reaches the purpose of improving mortar performance.And characteristics such as the PVA fiber has good dispersity, diameter is little, weather resistance is high, bond stress is strong, Environmental Safety.
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 institute gained.
In sum, anti-cracking impervious 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 waterproof mortar engineerings, 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 impervious 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.
All the components raw material used in the anti-cracking impervious agent of the present invention is the commercially available prod.For example: 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 PVA fiber that high-strength high elasticity modules polyethylene alcohol fiber can select for use Lanzhou Ni Weilong FCFC to produce.
Anti-cracking impervious 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 | 0.5 |
| 2 | Total alkali content (Na 2O+0.658K 2O) | ≤4 | 2.83 |
| 3 | Chloride ion content, % | ≤0.10 | 0.007 |
| 4 | Fineness, (0.315mm tails over) % | ≤3 | 2.0 |
| 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 | 0.6 |
In order fully to prove the advantage of anti-cracking impervious agent of the present invention, detect through national building materials test center, when it is that the performance index of being examined mortar are as shown in table 2 when being examined 5% (in mix) of cement consumption in the mortar:
Table 2, examined the performance index of mortar
In sum, anti-cracking impervious 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 highly-effective anti-cracking impervious agent, its component and weight content are: active zeolite powder 60%, silicon ash 15%, calcium oxide 5%, magnesium oxide 5%, anhydrous sodium sulphate 8%, methyl cellulose ether 0.1%, sodium lauryl sulphate 2.9% and high-strength high elasticity modules polyethylene alcohol fiber 4%.
Specific requirement to said components is as follows:
It is that the clinoptilolite of 400 nanometers is levigate to 150 orders, remove the active zeolite powder of crystal water gained in 800 ℃ ultrahigh-temperature again that the active zeolite powder is selected pore size for use.Diameter 18 μ m, the long 6mm of high-strength high elasticity modules polyethylene alcohol fiber.The silicon ash is selected 7000 purpose silicon ashes for use.
Components all in the anti-cracking impervious agent of the present invention are the commercially available prod.
The production method of above-mentioned anti-cracking impervious agent is to carry out following steps successively:
1), drop in the physical reaction still behind active zeolite powder and the sodium lauryl sulphate uniform mixing, is warming up to 150 ℃, modified-reaction 30min under 150 ℃ 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 and methyl cellulose ether 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 impervious agent.
Embodiment 2, a kind of highly-effective anti-cracking impervious agent, its component and weight content are: active zeolite powder 80%, silicon ash 5.8%, calcium oxide 3%, magnesium oxide 3%, anhydrous sodium sulphate 3%, methyl cellulose ether 0.2%, Sodium dodecylbenzene sulfonate 2% and high-strength high elasticity modules polyethylene alcohol fiber 3%.
Specific requirement to said components is as follows:
It is that the clinoptilolite of 600 nanometers is levigate to 200 orders, remove the active zeolite powder of crystal water gained in 900 ℃ ultrahigh-temperature again that the active zeolite powder is selected pore size for use.Diameter 20 μ m, the long 3mm of high-strength high elasticity modules polyethylene alcohol fiber.The silicon ash is selected 9000 purpose silicon ashes for use.
Components all in the anti-cracking impervious agent of the present invention are the commercially available prod.
The production method of above-mentioned anti-cracking impervious agent is to carry out following steps successively:
1), drop in the physical reaction still behind active zeolite powder and the Sodium dodecylbenzene sulfonate uniform mixing, is 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 and methyl cellulose ether 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 impervious agent.
Embodiment 3, a kind of highly-effective anti-cracking impervious agent, its component and weight content are: active zeolite powder 65.7%, silicon ash 10%, calcium oxide 8%, magnesium oxide 8%, anhydrous sodium sulphate 5%, methyl cellulose ether 0.3%, silylation matrix material 1% and high-strength high elasticity modules polyethylene alcohol fiber 2%.
Specific requirement to said components is as follows:
It is that the mordenite of 500 nanometers is levigate to 250 orders, remove the active zeolite powder of crystal water gained in 850 ℃ ultrahigh-temperature again that the active zeolite powder is selected pore size for use.Diameter 19 μ m, the long 5mm of high-strength high elasticity modules polyethylene alcohol fiber.The silicon ash is selected 10000 purpose silicon ashes for use.
Components all in the anti-cracking impervious agent of the present invention are the commercially available prod.
The production method of above-mentioned anti-cracking impervious agent is to carry out following steps successively:
1), drop in the physical reaction still behind active zeolite powder and the silylation matrix material uniform mixing, is 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 and methyl cellulose ether 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 impervious agent.
Embodiment 4, a kind of highly-effective anti-cracking impervious agent, its component and weight content are: active zeolite powder 75.9%, silicon ash 5%, calcium oxide 5%, magnesium oxide 4%, anhydrous sodium sulphate 5%, methyl cellulose ether 0.1%, Sodium dodecylbenzene sulfonate 2% and high-strength high elasticity modules polyethylene alcohol fiber 3%.
Specific requirement to said components is as follows:
It is that the clinoptilolite of 400 nanometers is levigate to 150 orders, remove the active zeolite powder of crystal water gained in 800 ℃ ultrahigh-temperature again that the active zeolite powder is selected pore size for use.Diameter 18 μ m, the long 6mm of high-strength high elasticity modules polyethylene alcohol fiber.The silicon ash is selected 7000 purpose silicon ashes for use.
Components all in the anti-cracking impervious agent of the present invention are the commercially available prod.
The production method of above-mentioned anti-cracking impervious agent is to carry out following steps successively:
1), drop in the physical reaction still behind active zeolite powder and the Sodium dodecylbenzene sulfonate uniform mixing, is warming up to 150 ℃, modified-reaction 20min 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 and methyl cellulose ether 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 impervious 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 impervious agent, its component and weight content are: active zeolite powder 60%～80%, silicon ash 5%～15%, calcium oxide 3%～8%, magnesium oxide 3%～8%, anhydrous sodium sulphate 3%～8%, methyl cellulose ether 0.1%～0.3%, silane coupling agent 1.0%～3.0% and high-strength high elasticity modules polyethylene alcohol fiber 2%～4%.
2, anti-cracking impervious 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 impervious agent according to claim 1 and 2 is characterized in that: diameter 18～20 μ m of described high-strength high elasticity modules polyethylene alcohol fiber, long 3～6mm.
4, anti-cracking impervious agent according to claim 3 is characterized in that: described silicon ash is 7000～10000 purpose silicon ashes.
5, anti-cracking impervious agent according to claim 4 is characterized in that: described silane coupling agent is sodium lauryl sulphate or Sodium dodecylbenzene sulfonate.
6, anti-cracking impervious 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 impervious 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 and methyl cellulose ether 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 impervious agent.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101624482B (en) * | 2009-08-13 | 2012-07-18 | 沈阳化工学院 | Preparation method of taking modified clinoptilolite as rubber reinforcing agent |
| CN102909916B (en) * | 2012-10-21 | 2015-01-21 | 广东威孚包装材料有限公司 | CPP (Chlorinated Polypropylene) aluminized base film for retaining high surface tension of aluminizing surface |
| CN103936328A (en) * | 2014-03-17 | 2014-07-23 | 沈池清 | Mortar water retention thickener |
| CN104276776B (en) * | 2014-09-30 | 2016-08-24 | 深圳市绿发鹏程环保科技有限公司 | The additive of dry-mixed mortar and dry-mixed mortar and preparation method thereof |
| CN107162468A (en) * | 2017-06-14 | 2017-09-15 | 合肥易美特建材有限公司 | A kind of concrete waterproofer and preparation method thereof |
| CN110734245A (en) * | 2019-10-29 | 2020-01-31 | 武汉三源特种建材有限责任公司 | Hydration heat inhibition type concrete anti-cracking waterproof agent, preparation method and application thereof |
| CN111423193B (en) * | 2020-03-20 | 2023-01-31 | 临海市忠信新型建材有限公司 | Quick-hardening polymer cement waterproof mortar with low water absorption and preparation method thereof |
| CN112456879B (en) * | 2020-12-07 | 2022-07-26 | 绵竹市铸诚混凝土有限公司 | High-strength corrosion-resistant concrete for engineering pile and preparation method thereof |
| CN113800809A (en) * | 2021-08-16 | 2021-12-17 | 湖南大禹奇功建材科技有限公司 | Nano micro-silicon anti-cracking waterproof agent and preparation method thereof |
| CN115611551B (en) * | 2022-12-16 | 2023-03-14 | 石家庄市长安育才建材有限公司 | Alkali aggregate composite inhibitor and preparation method 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 |