CN109704622A - A kind of preparation method of concrete anti-crack and anti-seepage supporting material - Google Patents
A kind of preparation method of concrete anti-crack and anti-seepage supporting material Download PDFInfo
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- CN109704622A CN109704622A CN201910060507.9A CN201910060507A CN109704622A CN 109704622 A CN109704622 A CN 109704622A CN 201910060507 A CN201910060507 A CN 201910060507A CN 109704622 A CN109704622 A CN 109704622A
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Abstract
The present invention relates to a kind of concrete preparation methods of anti-crack and anti-seepage supporting material, belong to building material technical field.The present invention is using powdered whiting as substrate, prepare concrete anti-crack and anti-seepage supporting material, the addition of powdered whiting can effectively increase the volume of supporting material, reduce the cost of supporting material, powdered whiting has good reinforcing, the stability of concrete can be effectively improved, effective reinforcement is carried out to concrete, improves the heat resistance and mechanical property of concrete；The present invention passes through addition SiO2/TiO2Aeroge, prepare concrete anti-crack and anti-seepage supporting material, aeroge has very low convection conduct heat rate and gas phase thermal conductivity, and the addition of titanium dioxide can effectively reduce the thermal conductivity of aeroge, to effectively prevent concrete uneven heating under low temperature or hot weather and generate slight crack, aeroge can effectively adsorb the steam in air, concrete can be effectively prevent to generate slight crack because of dry weather.
Description
Technical field
The present invention relates to a kind of concrete preparation methods of anti-crack and anti-seepage supporting material, belong to building material technology neck
Domain.
Background technique
To meet the design of specific structure and construction process requirement, early strength concrete, high-strength concrete, fiber concrete,
Perdurable concrete, high-flowing concrete, self-compacting concrete and high performance concrete etc., are widely used, concrete technology
Also it continues to develop therewith.However, the application field with concrete is more and more wider, intensity is higher and higher, and production increases year by year
Greatly, the insufficient problem in relation to concrete durability is also more and more prominent.Concrete structure is shown as to occur too early after use
The even serious structure of disease, cracking is destroyed.
Concrete have raw material be easy to get, using technology relative maturity, structural integrity is strong, normability is good, project cost
Low, the advantages that durability is strong, it is still the maximum construction material of dosage in all kinds of building structure at present.However, certainly due to material
Easily there are different degrees of, various forms of early cracks in concrete structure in body characteristic.Existing research shows, concrete eight 0%
Crack is caused by self-deformation, the main autogenous shrinkage including concrete, temperature shrinkage and dry contraction.Concrete early stage is anti-
Tensile strength increasess slowly, and when tension tensile strength is insufficiently resistant to concrete shrinkage deformation, early crack occurs in concrete.It is existing
The present, some chemical admixtures are widely applied in concrete, and water-binder ratio is smaller and smaller, the grain fineness of cement becomes larger,
Folk prescription dosage also has increase, in addition the use etc. of various ground mineral admixtures, these factors are possible to cause concrete early
The increase of phase heat release or contraction.In addition, modern concrete mostly uses greatly pumping construction, sand coarse aggregate ratio and the slump are all increased, are added
Conserve not in place etc. after upper pouring molding, these more increase the risk of concrete bracing.Crack not only influences to build
Beyond the region of objective existence is seen, and is the channel of harmful environmental medium intrusion inside concrete, and hazardous medium directly occurs with concrete and reinforcing bar
Physical-chemical reaction, it will reduce structure durability.When crack further expands and develops to a certain extent, it will directly jeopardize knot
Structure reliability brings potential security risk to the use of whole building.Therefore, the early-age crack problem of concrete has caused industry
Interior extensive concern.
Anti-permeability performance is also one of the principal element for influencing concrete durability.Concrete substrate compactness, porosity and
Pore-size distribution is the key factor for determining anti-permeability performance.When concrete impermeability is lower, not only liquid substances such as surrounding water
It is easier to penetrate into inside, and when meeting in subzero temperature or ambient water containing corrosive medium, concrete is subject to freeze or corrode
It acts on and destroys, armored concrete is also possible to cause phenomena such as steel bar corrosion, protective layer cracking are with peeling off.Therefore, coagulation is improved
Native impermeability is equally of great significance for underground pile platform, bridge pier, pond, harbor work, the durability of ocean engineering and safety.
Waterproofing and anti-leakage composite material refers to while having a kind of composite material of anti crack performance and anti-permeability performance, usually by fibre
Tie up material and powder body material composition.Its main function mechanism is to promote cracking of reinforced concrete by the bridge joint effect of fibrous material
Can, it is filled by the physics of powder body material or agent on crack resistance of concrete is substantially improved in the compactness of chemical reaction promotion concrete substrate
Performance is seeped, improves concrete comprehensive performance by 2 kinds of component ratios of optimization.Therefore, novel waterproofing and anti-leakage composite material is studied, it is right
There is positive effect in promoting extensive use of the high performance concrete engineering in construction field.
Summary of the invention
The technical problems to be solved by the invention: it is directed to the generally existing cracking of existing concrete material, leakage phenomenon, simultaneously
The problem of causing concrete strength to reduce, provides a kind of preparation method of concrete anti-crack and anti-seepage supporting material.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
(1) by SiO2/TiO2Aeroge is placed in the particle that pulverizer is ground into 5~10mm；
(2) by SiO2/TiO2Aerogel particle and Lauxite package epoxy resin micro-capsule are added in brominated butyl latex, often
2~4h is stirred with 120~140r/min revolving speed under temperature, obtains mixture；
(3) it feeds the mixture into powdered whiting particle, 40~60min is stirred with 150~200r/min revolving speed under room temperature, is obtained
Concrete anti-crack and anti-seepage supporting material.
The powdered whiting particle, Lauxite wrap up epoxy resin micro-capsule, SiO2/TiO2Aeroge, bromination fourth
The parts by weight of base latex are 60~80 parts of powdered whiting particles, 10~20 parts of Lauxites package epoxy resin micro-capsules, 20
~30 parts of SiO2/TiO2Aeroge, 40~50 parts of brominated butyl latex.
SiO described in step (1)2/TiO2The specific preparation step of aeroge are as follows:
(1) by ethyl orthosilicate, dehydrated alcohol be added deionized water in, under room temperature with 100~150r/min revolving speed stirring 10~
15min obtains teos solution；
(2) hydrochloric acid is slowly added dropwise into teos solution, is stirred under 40~50 DEG C of water-baths with 200~300r/min revolving speed
30~40min is mixed, heat preservation stands 1~2h, obtains mixed solution；
(3) nano titanium dioxide powder is added in mixed solution, N, N- dimethyl is slowly added dropwise in 30~40min of ultrasonic disperse
Formamide and ammonium hydroxide stir 5~10min with 150~250r/min under room temperature, stand 20~30min, obtain alcogel；
(4) alcogel is placed in aging 20 at 50~60 DEG C~for 24 hours, be placed in isopropanol and stand 1 under 50~60 DEG C of water-baths~
2h, then be placed in n-hexane under 40~50 DEG C of water-baths and be surface modified 40~60min, dehydrated alcohol washs 4~6 times, goes
Ion water washing 6~8 times, drying at room temperature obtains SiO2/TiO2Aeroge.
The ethyl orthosilicate, dehydrated alcohol, deionized water, hydrochloric acid, nano titanium dioxide powder, N, N- dimethyl methyl
Amide, ammonium hydroxide, isopropanol, n-hexane parts by weight be 20~30 parts of ethyl orthosilicates, 40~50 parts of dehydrated alcohols, 80~100
Hydrochloric acid, 10~15 parts of nano titanium dioxide powders, 5~10 parts of N of part deionized water, 5~10 parts of mass fractions 10%, N- diformazan
Ammonium hydroxide, 60~80 parts of isopropanols, 60~80 parts of n-hexanes of base formamide, 5~10 parts of mass concentrations 1%.
The preparation step of the package epoxy resin micro-capsule of Lauxite described in step (2) are as follows:
(1) urea is added in formaldehyde, 5~10min is stirred with 100~150r/min revolving speed under room temperature, quality point is slowly added dropwise
The triethanolamine solution of number 1% adjusts PH to 8~9, and it is molten to obtain urea-formaldehyde；
(2) urea-formaldehyde solution is placed under 65~75 DEG C of water-baths and 1~2h is stirred with 200~250r/min revolving speed, obtain performed polymer；
(3) by performed polymer, epoxy resin be added deionized water in, under room temperature with 400~500r/min revolving speed stirring 20~
30min is slowly added dropwise the sulphur acid for adjusting pH of mass concentration 1% to 4~5, obtains mixed liquor；
(4) mixed solution is placed in 65~75 DEG C of water-baths and 3~4h is stirred with 800~1000r/min revolving speed, be filtered by vacuum,
Filter cake is taken, and deionized water is washed 3~5 times, and dry 2~3h is placed at 60~70 DEG C, obtains the Lauxite package micro- glue of epoxy resin
Capsule.
The urea, formaldehyde, deionized water, the parts by weight of epoxy resin be 10~20 parts of urea, 20~40 parts of formaldehyde,
80~100 parts of deionized waters, 15~30 parts of epoxy resin.
The epoxy resin is bisphenol A type epoxy resin or brominated bisphenol a type epoxy resin.
The specific preparation step of brominated butyl latex described in step (2) are as follows:
(1) petroleum ether, benzene are added in toluene, 10~15min is stirred with 150~250r/min revolving speed under room temperature, obtains solvent；
(2) brombutyl particle and oleic acid are added in solvent, with 500~600r/min revolving speed under 50~60 DEG C of water-baths
5~6h is stirred, organic solution is obtained；
(3) by neopelex be added deionized water in, under room temperature with 100~200r/min revolving speed stirring 5~
10min, the potassium hydroxide solution that mass concentration 1% is slowly added dropwise adjust pH to 9~10, obtain neopelex solution；
(4) neopelex solution is added in organic solution, is placed under mulser with 24000~26000r/min's
Shearing rotating speed 70~90min of high speed dispersion, obtains dispersion liquid；
(5) dispersion liquid is placed in 2~4h of heating under 80~90 DEG C of water-baths, then is placed in a centrifuge with 8000~15000r/min centrifugation
30~40min takes upper layer lotion, obtains brominated butyl latex.
The solid content of brominated butyl latex described in step (5) is 45%~55%.
The brombutyl particle, oleic acid, petroleum ether, benzene, toluene neopelex, deionized water
Parts by weight are 20~30 parts of brombutyl particles, 5~10 parts of oleic acid, 20~30 parts of petroleum ethers, 10~15 parts of benzene, 30~40
Part toluene, 1~3 part of neopelex, 10~30 parts of deionized waters.
The present invention is compared with other methods, and advantageous effects are:
(1) present invention prepares concrete anti-crack and anti-seepage supporting material, at normal temperatures and pressures heavy using powdered whiting as substrate
The crystalline solid of calcium carbonate is the calcite of the inclined three faces crystal class of multiple tripartite of stable type, and powdered whiting grain shape is irregular, grain
Diameter distribution is wide, partial size is big, has the advantages that low energy consumption, the processing is simple, is convenient for mass production, the addition of powdered whiting can have
Effect increase supporting material volume, reduce supporting material cost, powdered whiting have it is good reinforcing, can effectively improve
The stability of concrete carries out effective reinforcement to concrete, improves the heat resistance and mechanical property of concrete；
(2) present invention passes through addition SiO2/TiO2Aeroge, prepares concrete anti-crack and anti-seepage supporting material, and aeroge belongs to
Mesoporous material has good stability, thermal shock resistance, while improving heat-insulated and warming effect, and can play anti-
The porosity of fire action, aeroge is high, and density is low, and the transmitance of heat is low, and solid skeleton accounts for 1%-10%, and airsetting in aeroge
Glue is using air as filling medium, and for gas volume up to 90%~99%, the mean free path of air molecule is greater than the aperture of aeroge
Size, air molecule, which is confined in the hole of Nano grade, to be flowed freely, and heat can not be transmitted by collision, so gas
Gel has very low convection conduct heat rate and gas phase thermal conductivity, and the addition of titanium dioxide can effectively reduce the thermal conductivity of aeroge
Rate, to effectively prevent concrete uneven heating under low temperature or hot weather and generate slight crack, aeroge can effectively adsorb air
In steam, concrete can be effectively prevent to generate slight crack because of dry weather；
(3) present invention prepares concrete anti-crack and anti-seepage supporting material by addition brominated butyl latex, brominated butyl latex by
Brombutyl is prepared, and brombutyl is the isobutylene-isoprene copolymer elastomer containing active bromine, by
Possess the main chain that butyl rubber is substantially saturated in brombutyl, so it has very low permeability, brominated butyl latex
Butyl rubber bromide glue film can be formed in material, the anti-permeability performance of material can be effectively improved, and brombutyl is in zinc oxide
Under the action of vulcanization reaction can occur with the sulphur of air, the pernicious gas that can effectively prevent atmosphere damage concrete；
(4) present invention wraps up epoxy resin micro-capsule by addition Lauxite, anti-crack and anti-seepage supporting material is prepared, due to epoxy
Resin has light base, amino, epoxy group isopolarity group, has a very strong adhesion strength to concrete, epoxy resin can with room temperature or
Rapid curing under person's cryogenic conditions, and while solidifying, will not generate the by-product of water or other condensations, under long-term stress not
It can be deformed, the heat resistance of epoxy resin is good, can normal use under high temperature and low temperature.
Specific embodiment
According to parts by weight, 20~30 parts of brombutyl particles, 5~10 parts of oleic acid, 20~30 parts of stones are weighed respectively
Oily ether, 10~15 parts of benzene, 30~40 parts of toluene, 1~3 part of neopelex, 10~30 parts of deionized waters, by petroleum
Ether, benzene are added in toluene, stir 10~15min under room temperature with 150~250r/min revolving speed, solvent are obtained, by brombutyl
Particle and oleic acid are added in solvent, stir 5~6h under 50~60 DEG C of water-baths with 500~600r/min revolving speed, obtain organic solution,
Neopelex is added in deionized water, 5~10min is stirred with 100~200r/min revolving speed under room temperature, is slowly dripped
Add the potassium hydroxide solution of mass concentration 1% to adjust pH to 9~10, neopelex solution is obtained, by detergent alkylate sulphur
Acid sodium solution be added organic solution in, be placed under mulser with the shearing rotating speed high speed dispersion 70 of 24000~26000r/min~
90min obtains dispersion liquid, and dispersion liquid is placed under 80~90 DEG C of water-baths 2~4h of heating, then be placed in a centrifuge with 8000~
15000r/min be centrifuged 30~40min, take upper layer lotion, obtain brominated butyl latex, then according to parts by weight, respectively weigh 10~
20 parts of urea, 20~40 parts of formaldehyde, 80~100 parts of deionized waters, 15~30 parts of epoxy resin urea are added in formaldehyde, often
5~10min is stirred with 100~150r/min revolving speed under temperature, the triethanolamine solution that mass fraction 1% is slowly added dropwise adjusts PH to 8
~9, obtain urea-formaldehyde solution, by urea-formaldehyde solution be placed under 65~75 DEG C of water-baths with 200~250r/min revolving speed stirring 1~
2h obtains performed polymer, by performed polymer, epoxy resin be added deionized water in, under room temperature with 400~500r/min revolving speed stirring 20~
30min is slowly added dropwise the sulphur acid for adjusting pH of mass concentration 1% to 4~5, obtains mixed liquor, mixed solution is placed in into 65~75 DEG C
3~4h is stirred with 800~1000r/min revolving speed in water-bath, vacuum filtration takes filter cake, and deionized water is washed 3~5 times, is placed in 60
Dry 2~3h at~70 DEG C obtains Lauxite package epoxy resin micro-capsule, then according to parts by weight, weighs 20~30 respectively
Part ethyl orthosilicate, 40~50 parts of dehydrated alcohols, 80~100 parts of deionized waters, the hydrochloric acid of 5~10 parts of mass fractions 10%, 10~
15 parts of nano titanium dioxide powders, 5~10 parts of n,N-Dimethylformamide, the ammonium hydroxide of 5~10 parts of mass concentrations 1%, 60~80 parts
Isopropanol, 60~80 parts of n-hexanes ethyl orthosilicate, dehydrated alcohol are added in deionized water, with 100~150r/ under room temperature
Min revolving speed stirs 10~15min, obtains teos solution, hydrochloric acid is slowly added dropwise into teos solution, 40~
30~40min is stirred with 200~300r/min revolving speed under 50 DEG C of water-baths, heat preservation stands 1~2h, mixed solution obtained, by nanometer two
Titanium dioxide powder is added in mixed solution, and n,N-Dimethylformamide and ammonium hydroxide is slowly added dropwise, often in 30~40min of ultrasonic disperse
5~10min is stirred with 150~250r/min under temperature, 20~30min is stood, obtains alcogel, alcogel is placed at 50~60 DEG C
Aging 20~for 24 hours, 1~2h of standing under 50~60 DEG C of water-baths is placed in isopropanol, then is placed in n-hexane in 40~50 DEG C of water
40~60min is surface modified under bath, dehydrated alcohol washs 4~6 times, and deionized water is washed 6~8 times, and drying at room temperature obtains
SiO2/TiO2Aeroge, then according to parts by weight, claim 60~80 parts of powdered whiting particles, 10~20 parts of Lauxite packets respectively
Wrap up in epoxy resin micro-capsule, 20~30 parts of SiO2/TiO2Aeroge, 40~50 parts of brominated butyl latex, by SiO2/TiO2Airsetting
Glue is placed in the particle that pulverizer is ground into 5~10mm, by SiO2/TiO2Aerogel particle and Lauxite package epoxy resin are micro-
Capsule is added in brominated butyl latex, stirs 2~4h under room temperature with 120~140r/min revolving speed, obtains mixture, by mixture plus
Enter in powdered whiting particle, 40~60min is stirred with 150~200r/min revolving speed under room temperature, obtains concrete anti-crack and anti-seepage
Supporting material.
According to parts by weight, respectively weigh 20 parts of brombutyl particles, 5 parts of oleic acid, 20 parts of petroleum ethers, 10 parts of benzene,
30 parts of toluene, 1 part of neopelex, 10 parts of deionized waters petroleum ether, benzene are added in toluene, with 150r/ under room temperature
Min revolving speed stirs 10min, obtains solvent, and brombutyl particle and oleic acid are added in solvent, under 50 DEG C of water-baths with
500r/min revolving speed stirs 5h, obtains organic solution, neopelex is added in deionized water, with 100r/ under room temperature
Min revolving speed stirs 5min, and the potassium hydroxide solution that mass concentration 1% is slowly added dropwise adjusts pH to 9, obtains neopelex
Neopelex solution is added in organic solution, is placed in the shearing rotating speed under mulser with 24000r/min by solution
High speed dispersion 70min, obtains dispersion liquid, and dispersion liquid is placed under 80 DEG C of water-baths and heats 2h, then is placed in a centrifuge with 8000r/min
Be centrifuged 30min, take upper layer lotion, obtain brominated butyl latex, then according to parts by weight, respectively weigh 10 parts of urea, 20 parts of formaldehyde,
Urea is added in formaldehyde for 80 parts of deionized waters, 15 parts of epoxy resin, stirs 5min under room temperature with 100r/min revolving speed, slowly
The triethanolamine solution that mass fraction 1% is added dropwise adjusts PH to 8, obtains urea-formaldehyde solution, urea-formaldehyde solution is placed in 65 DEG C of water
Under bath with 200r/min revolving speed stir 1h, obtain performed polymer, by performed polymer, epoxy resin be added deionized water in, under room temperature with
400r/min revolving speed stirs 20min, and the sulphur acid for adjusting pH of mass concentration 1% is slowly added dropwise to 4, obtains mixed liquor, mixed solution is set
3h is stirred with 800r/min revolving speed in entering in 65 DEG C of water-baths, vacuum filtration takes filter cake, and deionized water is washed 3 times, is placed at 60 DEG C
Dry 2h obtains Lauxite package epoxy resin micro-capsule, then according to parts by weight, weighs 20 parts of ethyl orthosilicates, 40 respectively
Part dehydrated alcohol, 80 parts of deionized waters, 5 parts of mass fractions 10% hydrochloric acid, 10 parts of nano titanium dioxide powders, 5 parts of N, N- diformazan
Ethyl orthosilicate, dehydrated alcohol are added ammonium hydroxide, 60 parts of isopropanols, the 60 parts of n-hexanes of base formamide, 5 parts of mass concentrations 1%
In deionized water, 10min is stirred with 100r/min revolving speed under room temperature, teos solution is obtained, hydrochloric acid is slowly added dropwise to just
In ethyl silicate solution, 30min is stirred with 200r/min revolving speed under 40 DEG C of water-baths, heat preservation stands 1h, obtains mixed solution, will receive
Rice titania powder is added in mixed solution, and n,N-Dimethylformamide and ammonium hydroxide is slowly added dropwise, often in ultrasonic disperse 30min
5min is stirred with 150r/min under temperature, 20min is stood, obtains alcogel, alcogel is placed in aging 20h at 50 DEG C, is placed in isopropyl
1h is stood in alcohol under 50 DEG C of water-baths, then is placed in n-hexane under 40 DEG C of water-baths and is surface modified 40min, dehydrated alcohol is washed
It washs 4 times, deionized water is washed 6 times, and drying at room temperature obtains SiO2/TiO2Aeroge, then according to parts by weight, claim 60 parts of heavys respectively
Calcium carbonate granule, 10 parts of Lauxites wrap up epoxy resin micro-capsule, 20 parts of SiO2/TiO2Aeroge, 40 parts of brominated butyl rubbers
Cream, by SiO2/TiO2Aeroge is placed in the particle that pulverizer is ground into 5mm, by SiO2/TiO2Aerogel particle and Lauxite
It wraps up epoxy resin micro-capsule to be added in brominated butyl latex, 2h is stirred with 120r/min revolving speed under room temperature, mixture is obtained, will mix
It closes object to be added in powdered whiting particle, 40min is stirred with 150r/min revolving speed under room temperature, obtains concrete anti-crack and anti-seepage reinforcement
Material.
According to parts by weight, respectively weigh 25 parts of brombutyl particles, 8 parts of oleic acid, 25 parts of petroleum ethers, 12 parts of benzene,
35 parts of toluene, 2 parts of neopelexes, 20 parts of deionized waters petroleum ether, benzene are added in toluene, with 200r/ under room temperature
Min revolving speed stirs 12min, obtains solvent, and brombutyl particle and oleic acid are added in solvent, under 55 DEG C of water-baths with
550r/min revolving speed stirs 5h, obtains organic solution, neopelex is added in deionized water, with 150r/ under room temperature
Min revolving speed stirs 8min, and the potassium hydroxide solution that mass concentration 1% is slowly added dropwise adjusts pH to 9, obtains neopelex
Neopelex solution is added in organic solution, is placed in the shearing rotating speed under mulser with 25000r/min by solution
High speed dispersion 80min, obtains dispersion liquid, and dispersion liquid is placed under 85 DEG C of water-baths and heats 3h, then is placed in a centrifuge with 11500r/
Min is centrifuged 35min, takes upper layer lotion, obtains brominated butyl latex, then according to parts by weight, weighs 15 parts of urea, 30 parts of first respectively
Urea is added in formaldehyde for aldehyde, 90 parts of deionized waters, 25 parts of epoxy resin, stirs 8min under room temperature with 125r/min revolving speed, delays
The slow triethanolamine solution that mass fraction 1% is added dropwise adjusts PH to 8, obtains urea-formaldehyde solution, urea-formaldehyde solution is placed in 70 DEG C
Under water-bath with 225r/min revolving speed stir 1h, obtain performed polymer, by performed polymer, epoxy resin be added deionized water in, under room temperature with
450r/min revolving speed stirs 25min, and the sulphur acid for adjusting pH of mass concentration 1% is slowly added dropwise to 4, obtains mixed liquor, mixed solution is set
3h is stirred with 900r/min revolving speed in entering in 70 DEG C of water-baths, vacuum filtration takes filter cake, and deionized water is washed 4 times, is placed at 65 DEG C
Dry 2h obtains Lauxite package epoxy resin micro-capsule, then according to parts by weight, weighs 25 parts of ethyl orthosilicates, 45 respectively
Part dehydrated alcohol, 90 parts of deionized waters, 8 parts of mass fractions 10% hydrochloric acid, 12 parts of nano titanium dioxide powders, 8 parts of N, N- diformazan
Ethyl orthosilicate, dehydrated alcohol are added ammonium hydroxide, 70 parts of isopropanols, the 70 parts of n-hexanes of base formamide, 8 parts of mass concentrations 1%
In deionized water, 12min is stirred with 125r/min revolving speed under room temperature, teos solution is obtained, hydrochloric acid is slowly added dropwise to just
In ethyl silicate solution, 35min is stirred with 250r/min revolving speed under 45 DEG C of water-baths, heat preservation stands 1h, obtains mixed solution, will receive
Rice titania powder is added in mixed solution, and n,N-Dimethylformamide and ammonium hydroxide is slowly added dropwise, often in ultrasonic disperse 35min
8min is stirred with 200r/min under temperature, 25min is stood, obtains alcogel, alcogel is placed in aging 22h at 55 DEG C, is placed in isopropyl
1h is stood in alcohol under 55 DEG C of water-baths, then is placed in n-hexane under 45 DEG C of water-baths and is surface modified 50min, dehydrated alcohol is washed
It washs 5 times, deionized water is washed 7 times, and drying at room temperature obtains SiO2/TiO2Aeroge, then according to parts by weight, claim 70 parts of heavys respectively
Calcium carbonate granule, 15 parts of Lauxites wrap up epoxy resin micro-capsule, 25 parts of SiO2/TiO2Aeroge, 45 parts of brominated butyl rubbers
Cream, by SiO2/TiO2Aeroge is placed in the particle that pulverizer is ground into 8mm, by SiO2/TiO2Aerogel particle and Lauxite
It wraps up epoxy resin micro-capsule to be added in brominated butyl latex, 3h is stirred with 130r/min revolving speed under room temperature, mixture is obtained, will mix
It closes object to be added in powdered whiting particle, 50min is stirred with 175r/min revolving speed under room temperature, obtains concrete anti-crack and anti-seepage reinforcement
Material.
According to parts by weight, respectively weigh 30 parts of brombutyl particles, 10 parts of oleic acid, 30 parts of petroleum ethers, 15 parts of benzene,
40 parts of toluene, 3 parts of neopelexes, 30 parts of deionized waters petroleum ether, benzene are added in toluene, with 250r/ under room temperature
Min revolving speed stirs 15min, obtains solvent, and brombutyl particle and oleic acid are added in solvent, under 60 DEG C of water-baths with
600r/min revolving speed stirs 6h, obtains organic solution, neopelex is added in deionized water, with 200r/ under room temperature
Min revolving speed stirs 10min, and the potassium hydroxide solution that mass concentration 1% is slowly added dropwise adjusts pH to 10, obtains dodecyl benzene sulfonic acid
Neopelex solution is added in organic solution sodium solution, is placed under mulser and is turned with the shearing of 26000r/min
Fast high speed dispersion 90min, obtains dispersion liquid, and dispersion liquid is placed under 90 DEG C of water-baths and heats 4h, then is placed in a centrifuge with 15000r/
Min is centrifuged 40min, takes upper layer lotion, obtains brominated butyl latex, then according to parts by weight, weighs 20 parts of urea, 40 parts of first respectively
Urea is added in formaldehyde for aldehyde, 100 parts of deionized waters, 30 parts of epoxy resin, stirs 10min under room temperature with 150r/min revolving speed,
The triethanolamine solution that mass fraction 1% is slowly added dropwise adjusts PH to 9, obtains urea-formaldehyde solution, urea-formaldehyde solution is placed in 75
2h is stirred with 250r/min revolving speed under DEG C water-bath, obtains performed polymer, performed polymer, epoxy resin are added in deionized water, under room temperature
30min is stirred with 500r/min revolving speed, the sulphur acid for adjusting pH of mass concentration 1% is slowly added dropwise to 5, mixed liquor is obtained, by mixed solution
It is placed in 75 DEG C of water-baths and 4h is stirred with 1000r/min revolving speed, vacuum filtration takes filter cake, and deionized water is washed 5 times, is placed in 70
Dry 3h at DEG C obtains Lauxite package epoxy resin micro-capsule, then according to parts by weight, weighs 30 parts of positive silicic acid second respectively
Ester, 50 parts of dehydrated alcohols, 100 parts of deionized waters, 10 parts of mass fractions 10% hydrochloric acid, 15 parts of nano titanium dioxide powders, 10 parts
Ammonium hydroxide, 80 parts of isopropanols, the 80 parts of n-hexanes of n,N-Dimethylformamide, 10 parts of mass concentrations 1%, by ethyl orthosilicate, anhydrous
Ethyl alcohol is added in deionized water, stirs 15min under room temperature with 150r/min revolving speed, teos solution is obtained, by salt slow acid
It is added dropwise in teos solution, 40min is stirred with 300r/min revolving speed under 50 DEG C of water-baths, heat preservation stands 2h, must mix
Nano titanium dioxide powder is added in mixed solution solution, and n,N-Dimethylformamide is slowly added dropwise in ultrasonic disperse 40min
And ammonium hydroxide, 10min is stirred with 250r/min under room temperature, 30min is stood, obtains alcogel, alcogel is placed in aging at 60 DEG C
For 24 hours, it is placed in isopropanol and stands 2h under 60 DEG C of water-baths, then be placed in n-hexane under 50 DEG C of water-baths and be surface modified
60min, dehydrated alcohol wash 6 times, and deionized water is washed 8 times, and drying at room temperature obtains SiO2/TiO2Aeroge, then in parts by weight
Meter claims 80 parts of powdered whiting particles, 20 parts of Lauxites to wrap up epoxy resin micro-capsule, 30 parts of SiO respectively2/TiO2Airsetting
Glue, 50 parts of brominated butyl latex, by SiO2/TiO2Aeroge is placed in the particle that pulverizer is ground into 10mm, by SiO2/TiO2Gas
Gel particle and Lauxite package epoxy resin micro-capsule are added in brominated butyl latex, are stirred under room temperature with 140r/min revolving speed
4h is mixed, mixture is obtained, is fed the mixture into powdered whiting particle, 60min is stirred with 200r/min revolving speed under room temperature, is obtained mixed
Solidifying soil anti-crack and anti-seepage supporting material.
Reference examples: the anti-crack and anti-seepage supporting material of Dongguan company production.
Concrete is added in the anti-crack and anti-seepage supporting material that example and reference examples are prepared, to the concrete after addition into
Row detection, specific detection are as follows:
Mechanical property: according to GB/T50081-2002 " standard for test methods of mechanical properties of ordinary concrete " relevant regulations, measurement
Concrete crushing strength value.
Crazing-resistance test: according to GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete mark
It is quasi- " relevant regulations, measure total area of cracks on concrete unit area.
Water resistant permeability test: according to GB/T50082-2009 " Standard for test methods of longterm performance and durability of ordinary concrete
Standard " relevant regulations, concrete impermeability is examined using permeated height method (constant pressure is adjusted to 0.6MPa).
Specific test result such as table 1.
1 performance characterization contrast table of table
| Detection project | Example 1 | Example 2 | Example 3 | Reference examples |
| Compression strength/MPa | 38.1 | 38.9 | 39.3 | 16.9 |
| Total area of cracks/mm on unit area2/m2 | 219 | 230 | 225 | 2418 |
| Permeated height/mm | 36.2 | 32.8 | 36.0 | 67.8 |
As shown in Table 1, anti-crack and anti-seepage supporting material prepared by the present invention improves the mechanical property of concrete, cracking resistance and anti-
Water permeation performance.
Claims (10)
1. a kind of concrete preparation method of anti-crack and anti-seepage supporting material, which is characterized in that specific preparation step are as follows:
(1) by SiO2/TiO2Aeroge is placed in the particle that pulverizer is ground into 5~10mm；
(2) by SiO2/TiO2Aerogel particle and Lauxite package epoxy resin micro-capsule are added in brominated butyl latex, often
2~4h is stirred with 120~140r/min revolving speed under temperature, obtains mixture；
(3) it feeds the mixture into powdered whiting particle, 40~60min is stirred with 150~200r/min revolving speed under room temperature, is obtained
Concrete anti-crack and anti-seepage supporting material.
2. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 1, which is characterized in that institute
Powdered whiting particle, Lauxite the package epoxy resin micro-capsule, SiO stated2/TiO2The weight of aeroge, brominated butyl latex
Amount part is 60~80 parts of powdered whiting particles, 10~20 parts of Lauxites package epoxy resin micro-capsules, 20~30 parts of SiO2/
TiO2Aeroge, 40~50 parts of brominated butyl latex.
3. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 1, which is characterized in that step
Suddenly SiO described in (1)2/TiO2The specific preparation step of aeroge are as follows:
(1) by ethyl orthosilicate, dehydrated alcohol be added deionized water in, under room temperature with 100~150r/min revolving speed stirring 10~
15min obtains teos solution；
(2) hydrochloric acid is slowly added dropwise into teos solution, is stirred under 40~50 DEG C of water-baths with 200~300r/min revolving speed
30~40min is mixed, heat preservation stands 1~2h, obtains mixed solution；
(3) nano titanium dioxide powder is added in mixed solution, N, N- dimethyl is slowly added dropwise in 30~40min of ultrasonic disperse
Formamide and ammonium hydroxide stir 5~10min with 150~250r/min under room temperature, stand 20~30min, obtain alcogel；
(4) alcogel is placed in aging 20 at 50~60 DEG C~for 24 hours, be placed in isopropanol and stand 1 under 50~60 DEG C of water-baths~
2h, then be placed in n-hexane under 40~50 DEG C of water-baths and be surface modified 40~60min, dehydrated alcohol washs 4~6 times, goes
Ion water washing 6~8 times, drying at room temperature obtains SiO2/TiO2Aeroge.
4. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 3, which is characterized in that institute
The ethyl orthosilicate stated, dehydrated alcohol, deionized water, hydrochloric acid, nano titanium dioxide powder, n,N-Dimethylformamide, ammonium hydroxide,
Isopropanol, n-hexane parts by weight be 20~30 parts of ethyl orthosilicates, 40~50 parts of dehydrated alcohols, 80~100 parts of deionized waters,
The hydrochloric acid of 5~10 parts of mass fractions 10%, 10~15 parts of nano titanium dioxide powders, 5~10 parts of n,N-Dimethylformamide, 5~
The ammonium hydroxide of 10 parts of mass concentrations 1%, 60~80 parts of isopropanols, 60~80 parts of n-hexanes.
5. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 1, which is characterized in that step
Suddenly the preparation step of the package of Lauxite described in (2) epoxy resin micro-capsule are as follows:
(1) urea is added in formaldehyde, 5~10min is stirred with 100~150r/min revolving speed under room temperature, quality point is slowly added dropwise
The triethanolamine solution of number 1% adjusts PH to 8~9, and it is molten to obtain urea-formaldehyde；
(2) urea-formaldehyde solution is placed under 65~75 DEG C of water-baths and 1~2h is stirred with 200~250r/min revolving speed, obtain performed polymer；
(3) by performed polymer, epoxy resin be added deionized water in, under room temperature with 400~500r/min revolving speed stirring 20~
30min is slowly added dropwise the sulphur acid for adjusting pH of mass concentration 1% to 4~5, obtains mixed liquor；
(4) mixed solution is placed in 65~75 DEG C of water-baths and 3~4h is stirred with 800~1000r/min revolving speed, be filtered by vacuum,
Filter cake is taken, and deionized water is washed 3~5 times, and dry 2~3h is placed at 60~70 DEG C, obtains the Lauxite package micro- glue of epoxy resin
Capsule.
6. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 5, which is characterized in that institute
The urea stated, formaldehyde, deionized water, the parts by weight of epoxy resin are 10~20 parts of urea, 20~40 parts of formaldehyde, 80~100 parts
Deionized water, 15~30 parts of epoxy resin.
7. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 5, which is characterized in that step
Suddenly epoxy resin described in (3) is bisphenol A type epoxy resin or brominated bisphenol a type epoxy resin.
8. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 1, which is characterized in that step
Suddenly the specific preparation step of brominated butyl latex described in (2) are as follows:
(1) petroleum ether, benzene are added in toluene, 10~15min is stirred with 150~250r/min revolving speed under room temperature, obtains solvent；
(2) brombutyl particle and oleic acid are added in solvent, with 500~600r/min revolving speed under 50~60 DEG C of water-baths
5~6h is stirred, organic solution is obtained；
(3) by neopelex be added deionized water in, under room temperature with 100~200r/min revolving speed stirring 5~
10min, the potassium hydroxide solution that mass concentration 1% is slowly added dropwise adjust pH to 9~10, obtain neopelex solution；
(4) neopelex solution is added in organic solution, is placed under mulser with 24000~26000r/min's
Shearing rotating speed 70~90min of high speed dispersion, obtains dispersion liquid；
(5) dispersion liquid is placed in 2~4h of heating under 80~90 DEG C of water-baths, then is placed in a centrifuge with 8000~15000r/min centrifugation
30~40min takes upper layer lotion, obtains brominated butyl latex.
9. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 8, which is characterized in that step
Suddenly the solid content of brominated butyl latex described in (5) is 45%~55%.
10. a kind of preparation method of concrete anti-crack and anti-seepage supporting material according to claim 8, which is characterized in that
The brombutyl particle, oleic acid, petroleum ether, benzene, toluene neopelex, deionized water parts by weight be
20~30 parts of brombutyl particles, 5~10 parts of oleic acid, 20~30 parts of petroleum ethers, 10~15 parts of benzene, 30~40 parts of toluene, 1
~3 parts of neopelexes, 10~30 parts of deionized waters.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451880A (en) * | 2019-08-07 | 2019-11-15 | 维特国际新材料（武汉）有限公司 | Anti-cracking and waterproofing concrete pouring procedure based on cement-base composite material |
| CN111205838A (en) * | 2020-02-26 | 2020-05-29 | 西南石油大学 | Composite microcapsule for fractured rock mass solidification seepage prevention and preparation method thereof |
| CN113387634A (en) * | 2021-05-07 | 2021-09-14 | 嘉兴上建宏成混凝土有限公司 | High-performance concrete for building and manufacturing method thereof |
| CN114105592A (en) * | 2021-12-17 | 2022-03-01 | 北方道路科技(辽宁)有限公司 | Super early strength concrete and preparation method thereof |
-
2019
- 2019-01-22 CN CN201910060507.9A patent/CN109704622A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451880A (en) * | 2019-08-07 | 2019-11-15 | 维特国际新材料（武汉）有限公司 | Anti-cracking and waterproofing concrete pouring procedure based on cement-base composite material |
| CN110451880B (en) * | 2019-08-07 | 2021-08-24 | 维特国际新材料（武汉）有限公司 | Anti-crack and anti-seepage concrete pouring method based on cement-based composite material |
| CN111205838A (en) * | 2020-02-26 | 2020-05-29 | 西南石油大学 | Composite microcapsule for fractured rock mass solidification seepage prevention and preparation method thereof |
| CN113387634A (en) * | 2021-05-07 | 2021-09-14 | 嘉兴上建宏成混凝土有限公司 | High-performance concrete for building and manufacturing method thereof |
| CN114105592A (en) * | 2021-12-17 | 2022-03-01 | 北方道路科技(辽宁)有限公司 | Super early strength concrete and preparation method thereof |
| CN114105592B (en) * | 2021-12-17 | 2022-08-23 | 北方道路科技(辽宁)有限公司 | Super early strength concrete and preparation method thereof |
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