CN103864386A - Self-cured delayed-coagulation inorganic leakage-proof waterproof material and preparation method thereof - Google Patents
Self-cured delayed-coagulation inorganic leakage-proof waterproof material and preparation method thereof Download PDFInfo
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- CN103864386A CN103864386A CN201410112311.7A CN201410112311A CN103864386A CN 103864386 A CN103864386 A CN 103864386A CN 201410112311 A CN201410112311 A CN 201410112311A CN 103864386 A CN103864386 A CN 103864386A
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Abstract
The invention discloses a self-cured delayed-coagulation inorganic leakage-proof waterproof material and a preparation method of the material. The self-cured delayed-coagulation inorganic leakage-proof waterproof material comprises powder and liquor which are in a weight ratio of 2.3-3.3, wherein the powder comprises silicate cement, sulphate aluminum cement, gypsum, quartz sands, a dry powder foamer, an organosilicone water repellent, an early strength agent, a water reducer, a retarder and an active agent. The molecular structural formula of the active agent is Ca(O-SiR-OH)2, wherein R is an alkyl group. The liquor comprises a polymeric emulsion, a defoamer, a mould-proof and weed-proof agent, a liquid reducer and water. The self-cured delayed-coagulation inorganic leakage-proof waterproof material has the advantages of high early-stage compressive strength, good impervious performance and good waterproof effect; meanwhile, the final setting time is short. The active agent sealed with the coating can generate secondary crystals at the position of defects on a base layer to automatically repair defects such as microcracks when coming across water. In addition, the preparation method of the self-cured delayed-coagulation inorganic leakage-proof waterproof material is simple in process and easy to operate.
Description
Technical field
The present invention relates to waterproof paint field, particularly relate to inorganic water-proofing material for stopping leak of self-healing property slow setting and preparation method thereof.
Background technology
The life-span that how effectively to solve building structure seepage and prolongation buildings is a difficult problem for Building technology always.Except reaching water proof anti-seepage by compact structure, the use of water-proof material also becomes requisite waterproof means.
Usually, what water-proof material adopted is cement-base infiltration crystallization water-proof material, and its mechanism of action is that the component chance water in material forms water-fast xln, filling capillary channel, thus make the fine and close waterproof of concrete.But this water-proof material final setting time is long, early anti pressured intension is low, anti-permeability performance is poor, delay subsequent technique construction.Meanwhile, waterproofing work mostly is disguised engineering, once waterproof layer by water seepage failure after, former waterproof layer, due to capped, is difficult to repair, and can not form integral waterproofing layer effect.
Summary of the invention
Based on this, be necessary to provide that a kind of final setting time is short, early anti pressured intension is high, anti-permeability performance is good, the inorganic water-proofing material for stopping leak of self-healing property slow setting and the preparation method of good water-proof effect.
The inorganic water-proofing material for stopping leak of a kind of self-healing property slow setting, comprises that weight ratio is pulvis and the liquor of 2.3-3.3, by weight,
Described pulvis comprises following component:
The molecular structural formula of silicate cement 40-45 part, aluminosulfate cement 12-15 part, gypsum 3-5 part, quartz sand 29-40.25 part, dry powder defoamer 0.1-0.2 part, organosilicon moisture repellent 0.2-0.3 part, hardening accelerator 0.15-0.2 part, water reducer 0.2-0.3 part, retardant 0.2-0.3 part, promoting agent 3-6 part, described promoting agent is Ca (O-SiR-OH)
2, wherein R is alkyl group;
Described liquor comprises following component:
Polymer emulsion 14.5-16.5 part, defoamer 0.05-0.1 part, mildew-resistant algaecide 0.1-0.2 part, liquid water reducer 0.1-0.2 part, water 19-21.3 part.
The mechanism of action of the promoting agent in the inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting is as follows:
1, the forming process of xln
The molecular structural formula of promoting agent is Ca (O-SiR-OH)
2, its molecular weight is little, contains hydrophobic grouping (R-) and hydrophilic radical (OH) simultaneously.Wherein, hydrophobic grouping (R-) is alkyl group.The wetting ability of promoting agent is greater than hydrophobicity, and water soluble polycondensation crystalline polamer does not occur in dry environment, and polycondensation crystalline polamer occurs in a humid environment, forms water-fast xln
when pH value declines, and there is catalyzer (SiO
3 2-) existence under, reaction formula is as follows:
n?Ca(O-SiR-OH)
2+n?Ca(O-SiR-OH)
2→
+2nCa(OH)
2
Ca(OH)
2+CO
2→CaCO
3+H
2O
As can be seen here, along with the increase of n, xln
molecular weight increases, and hydrophilic radical reduces, and hydrophobicity is greater than wetting ability, and now xln is water insoluble, and at Defect Base place, (crackle or space) preferentially forms, and strengthens the anti-permeability performance of basic unit's liquid towards water, and reaches good block-water effect.Wherein, in the time that n is 500-100, block-water effect is best.
Test shows, promoting agent powder is pungent, its pH >=12.Promoting agent powder is in dry alkalescence (pH > 7) environment, and good stability, polycondensation crystalline polamer can not occur.
2, the stability of xln
Xln
stability determined by the size of polymerization degree n.When the alkalescence of activator solution environment reduces, when the amplitude of acid enhancing (being that pH value declines) is large, crystalline growth velocity is fast, and polymerization degree n is very large, and hydrophilic radical is few, and hydrophobicity is far longer than wetting ability, and xln is steady state, water insoluble.When the alkalescence of active matter solution environmental reduces, the amplitude hour of acid enhancing (being that pH value declines), crystalline growth velocity is slower, polymerization degree n is little, hydrophobic grouping is few, and hydrophobicity is slightly larger than wetting ability, and xln is unsteady state, and be slightly soluble in water, the xln that is slightly soluble in water continues polymerization and forms stable xln under weakly alkaline or acidity (pH value is less than 10) condition.
3, the condition that xln forms
The promoting agent aqueous solution is along with concentration increases and generation polycondensation crystallization---and when the active masterbatch of crystallization is constructed in cement hydration process or on not dry cement products wetted surface, active matter is dissolved in the water, and intersperse among in water-proof material with water, but along with the time increases, moisture has participated in the hydration reaction of cement, and some water volatilized lostly, cause promoting agent concentration of aqueous solution to increase and polycondensation crystallization occurs.
Alkalescence reduces (be pH value reduce) and generation polycondensation crystallization---in coating application process, activator solution absorbs airborne CO
2and acidity or weakly alkaline material in surrounding environment, the pH value of activator solution is reduced, when pH is lower than 12 time, active small molecular is autopolymerization gradually.
(SiO in silicate cement
3 2-) be the catalyzer of active matter polyreaction---the hydration process of cement not only seizes the part moisture of activator solution, also for promoting agent polymerization provides good condition, thereby plays the effect of catalyzed polymerization.
The feature of organosilicon moisture repellent is to form the film hydrophobic barrier with " respiratory " at masonry, concrete, mortar and various coatingsurface.In water-proof material, add organosilicon moisture repellent can give coating good hydrophobic nature, buildings is played to many-sided provide protection.
The Main Function of hardening accelerator is to accelerate hydrated cementitious speed, promotes the development of water-proof material early strength.
Water reducer refers under concrete workability and the constant condition of cement consumption, can reduce mixing water amount, improve concrete strength.
Retardant refers to the admixture that delays concrete coagulating time and later strength is had no significant effect.Its main component is polyol, hydroxycarboxylate and derivative thereof, high sugared sulfonated lignin.
Defoamer can carry out deaeration to the microvesicle producing in material of construction construction or production process, and makes product have good persistence and shear stability and gain in strength.Adding of defoamer can make water-proof material in the time of construction, avoid occurring bubble, improves the decorative effect of water-proof material.The general organo-siloxane of kind of defoamer, polyethers, containing the compound of amine, imines and amides.
Mildew-resistant algaecide can be killed the microorganism in water-proof material, prevents the raw algae of water-proof material mildew in hygrothermal environment.
In an embodiment, described pulvis comprises following component therein:
Silicate cement 41-43 part, aluminosulfate cement 12-14 part, gypsum 3-5 part, quartz sand 35-38 part, dry powder defoamer 0.1-0.2 part, organosilicon moisture repellent 0.2-0.3 part, hardening accelerator 0.15-0.2 part, water reducer 0.2-0.3 part, retardant 0.2-0.3 part, promoting agent 3-4 part.
In an embodiment, described liquor comprises following component therein:
15 parts of polymer emulsions, defoamer 0.06-0.08 part, mildew-resistant algaecide 0.1-0.2 part, liquid water reducer 0.1-0.2 part, water 19-20 part.
In an embodiment, described dry powder defoamer is organosilicon powder defoamer therein, and described hardening accelerator is Quilonum Retard, and described water reducer is the sulfonated polycondensate powder of melamine type, and described retardant is Sunmorl N 60S and tartrate.
In an embodiment, described polymer emulsion is styrene-butadiene emulsion therein, and described defoamer is mineral oil defoaming agent, and described mildew-resistant algaecide is isothiazolinone, and described liquid water reducer is polycarboxylate water-reducer.
The preparation method of the inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting, comprises the following steps:
(1) by weight, take silicate cement 40-45 part, aluminosulfate cement 12-15 part, quartz sand 29-40.25 part, add the quartz sand of the silicate cement of 50% weight part and the aluminosulfate cement of 50% weight part and 98% weight part, more slowly drop into 3-5 part gypsum, obtain mixture A;
Adopt quartz sand mixing 0.1-0.2 part dry powder defoamer of 2% weight part, 0.2-0.3 part organosilicon moisture repellent, 0.15-0.2 part hardening accelerator, 0.2-0.3 part water reducer, 0.2-0.3 part retardant, 3-6 part promoting agent, obtains mixture B;
Mixture A and mixture B are mixed, then add the silicate cement of 50% weight part and the aluminosulfate cement of 50% weight part, stir, obtain pulvis;
(2) take the water of 19-21.3 weight part, in the water of 50% weight part, drop into 14.5-16.5 part polymer emulsion, under the rotating speed of 300-500rpm, disperse 3-5 minute, under the rotating speed of 300-500rpm, slowly add again the water of remaining 50% weight part, 0.05-0.1 part defoamer, 0.1-0.2 part mildew-resistant algaecide, 0.1-0.2 part liquid water reducer, obtains liquor;
(3) described pulvis and described liquor are mixed according to the weight ratio of 2.3-3.3, obtain the inorganic water-proofing material for stopping leak of self-healing property slow setting.
In an embodiment, described dry powder defoamer is organosilicon powder defoamer therein, and described hardening accelerator is Quilonum Retard, and described water reducer is the sulfonated polycondensate powder of melamine type, and described retardant is Sunmorl N 60S and tartrate.
In an embodiment, described polymer emulsion is styrene-butadiene emulsion therein, and described defoamer is mineral oil defoaming agent, and described mildew-resistant algaecide is isothiazolinone, and described liquid water reducer is polycarboxylate water-reducer.
The inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting adopts the chief component of silicate cement-aluminosulfate cement-dehydrated gyp-three-component compound system as inorganic leak stopping, has good early strength and impermeability.The promoting agent mixing is being met after water, promoting agent concentration of aqueous solution increases and the active masterbatch of generation polycondensation crystallization generation crystallization, when this masterbatch is constructed in cement hydration process or on not dry cement products wetted surface, active matter is dissolved in the water, and intersperse among in water-proof material with water, but along with the time increases, moisture has participated in the hydration reaction of cement, and some water volatilized lostly, causes promoting agent concentration of aqueous solution to increase and polycondensation crystallization occurs.And silicate cement not only seizes the part moisture of the promoting agent aqueous solution in hydration process, and can also provide catalyzer for polycondensation crystallization--SiO
3 2-thereby, play the effect of catalyzed polymerization.
In cement hydration process, have in the situation of water, promoting agent is water-soluble, and brings the space of coating and basic unit into water.Along with pH value declines, at silicate cement (SiO
3 2-) catalysis under, promoting agent is progressively polymerization in the hole of coating and basic unit, produce xln.The xln that promoting agent produces is the acicular structure of free-running property, but because macromole or high molecular xln contain more hydrophobic grouping, causes xln water insoluble.Like this, water-fast xln can strengthen the anti-permeability performance of basic unit's liquid towards water greatly to the filling of Defect Base, and reaches good block-water effect.
Because of the crystallization velocity of the curing speed specific activity agent of cement fast, so have greatly active matter by shutoff not polymerization or only produce deep aggregation phenomenon in cement based coating, make like this cement-base infiltration crystallization coating still there is certain activity, once there is cracking in cement basic layer, moist or moisture in the situation that, its promoting agent discharges automatically, can be again bring in crack gradually further polymerization into water and produce the passage of stable xln with shutoff water, thereby play the effect of stopping up and automatically supplying a gap, water-repellancy increases in time and strengthens.
The inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting is take silicate cement as main tri compound gelling system, the grog C of silicate cement
3a(tricalcium aluminate), add a certain amount of aluminosulfate cement (CA), be equivalent to introduce the CS(anhydrous slufuric acid aluminium calcium that early activity is quite high), and gypsum (CaSO
4) add also system played to the effect that promotes hydration reaction, meanwhile, can also play the effect of stabilising system reaction and anti-contraction, the ettringite C of generation
3a3CaSO
432H
2o has accelerated the early hydration speed of system, has obviously shortened the time of coagulation of the inorganic water-proofing material for stopping leak of self-healing property slow setting.Wherein, the reaction process of the hydration reaction of above-mentioned ternary gelling system is as follows:
One,
C
3A+3CaSO
4+32H
2O→C
3A·3CaSO
4·32H
2O
3CA+3CS+35H
2O→C
3A·3CaSO
4·32H
2O+2AH
3
3CA+9CS+6CH+9OH→C
3A·3CaSO
4·32H
2O
Two,
CA+CH+H
2O→C
4AH
13
CA+10H
2O→CAH
10
C
3S+H
2O→C-S-H
C
3a is tricalcium aluminate, and CA is monocalcium aluminate, C
3s is tricalcium silicate, and CH is calcium hydroxide, C
3a3CaSO
432H
2o is ettringite,
Wherein, C
4aH
13, CAH
10, C-S-H is six cubes of centrums, structure is very stable, intensity that can reinforced mortar.
Hydration reaction generates ettringite (C
3a3CaSO
432H
2o), the principal feature of ettringite is: formation speed is fast, strong in conjunction with the ability of water, has shrinkage-compensating ability.The quick generation of ettringite, has shortened time of coagulation of system, has improved the early strength of system and has reduced shrinking percentage.
Therefore, the inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting has advantages of that early anti pressured intension is high, anti-permeability performance good, good water-proof effect, and meanwhile, the final setting time of above-mentioned water-proof material is short.And there is auto repair capacity, and the promoting agent of coating sealing can produce secondary crystal after meeting water at Defect Base place, automatically repair the defects such as tiny crack, and anti-basic unit changes strong.In addition, preparation method's technique of the inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting is simple, easily operation.
Accompanying drawing explanation
Fig. 1 is the curing comparison diagram of the inorganic water-proofing material for stopping leak of self-healing property slow setting of embodiment 1 and the Portland cement based penetrant crystalline water-proof material of comparative example;
Fig. 2 is the inorganic water-proofing material for stopping leak penetrant crystalline of the self-healing property slow setting schematic diagram of embodiment 1.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.A lot of details are set forth in the following description so that fully understand the present invention.But the present invention can implement to be much different from alternate manner described here, and those skilled in the art can do similar improvement without prejudice to intension of the present invention in the situation that, and therefore the present invention is not subject to the restriction of following public concrete enforcement.
In following examples, raw material sources used are as follows:
Silicate cement is PII42.5R silicate cement, and specific surface area is 360m
2/ kg, buys in Guangzhou Yue Bao Cement Co., Ltd or Huadu cement mill, Guangzhou or conch Cement Co., Ltd.
Aluminosulfate cement is bought in Tangshan six or nine Cement Co., Ltds, Guangxi Yun Yan special cement company limited or Yongzhou Zhong great special cement limited liability company.
Gypsum is selected domestic without water anhydrite, and chief component is CaSO
482%, CaO1.1%.
Dry powder defoamer is organosilicon powder defoamer, selects the chemical AGITANR of bright icepro, P803.
Hardening accelerator is Quilonum Retard, is selected from Guangzhou Chemical Reagent Factory.
Water reducer is the sulfonated polycondensate powder of melamine type, is selected from German BASF chemistry, F10.
Retardant is that mass ratio is Sunmorl N 60S and the tartrate of 1:1, is selected from Guangzhou Chemical Reagent Factory.
Promoting agent is penetrant crystalline material, is selected from times Nike 88 penetrant crystalline shaped materials.
Quartz sand is selected the common quartz sand that the mass percent of SiO2 is 90%-99%, and interval fineness is 80-140 order.
Polymer emulsion is styrene-butadiene emulsion, is selected from German BASF chemistry SD623.
Defoamer is mineral oil defoaming agent, is selected from the 681F defoamer of French Rhodia.
Mildew-resistant algaecide is isothiazolinone, is selected from the MERGAL K14 of Troy company of the U.S..
Liquid water reducer polycarboxylate water-reducer, selects 40% of west card 225P or BASF 2651 admittedly to contain liquor.
Water is tap water.
Embodiment 1
The inorganic water-proofing material for stopping leak of a kind of self-healing property slow setting, comprises pulvis and liquor, and the weight ratio of pulvis and liquor is 2.3, wherein:
Silicate cement 40kg, aluminosulfate cement 12kg, gypsum 3kg, quartz sand 29kg, dry powder defoamer 0.1kg, organosilicon moisture repellent 0.2kg, hardening accelerator 0.15kg, water reducer 0.2kg, retardant 0.2kg, promoting agent 3kg;
Polymer emulsion 16.5kg, defoamer 0.1kg, mildew-resistant algaecide 0.2kg, liquid water reducer 0.2kg, water 21.3kg.
The preparation method of the inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting is:
(1) add the silicate cement of 20kg, the aluminosulfate cement of 6kg, and the quartz sand of 28.4kg, more slowly drop into 3kg gypsum, obtain mixture A;
Adopt the quartz sand mixing 0.1kg defoamer of 0.6kg, 0.2kg organosilicon moisture repellent, 0.15kg hardening accelerator, 0.2kg water reducer, 0.2kg retardant, 3kg promoting agent, obtains mixture B;
Mixture A and mixture B are mixed, then add the silicate cement of 20kg and the aluminosulfate cement of 6kg, stir, obtain pulvis.
(2) in the water of 10.6kg, drop into 16.5kg polymer emulsion, under the rotating speed of 300rpm, disperse 5 minutes, under the rotating speed of 300rpm, more slowly add 10.7kg water, 0.1kg defoamer, 0.2kg mildew-resistant algaecide, 0.2kg liquid water reducer, obtains liquor;
(3) pulvis and liquor are mixed, obtain the inorganic water-proofing material for stopping leak of self-healing property slow setting.
Embodiment 2
The inorganic water-proofing material for stopping leak of a kind of self-healing property slow setting, comprises pulvis and liquor, and the weight ratio of pulvis and liquor is 2.7, wherein:
Silicate cement 41kg, aluminosulfate cement 12kg, gypsum 3kg, quartz sand 35kg, dry powder defoamer 0.1kg, organosilicon moisture repellent 0.2kg, hardening accelerator 0.15kg, water reducer 0.2kg, retardant 0.2kg, promoting agent 3kg;
Polymer emulsion 15kg, defoamer 0.08kg, mildew-resistant algaecide 0.2kg, liquid water reducer 0.2kg, water 20kg.
The preparation method of the inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting is with embodiment 1.
Embodiment 3
The inorganic water-proofing material for stopping leak of a kind of self-healing property slow setting, comprises pulvis and liquor, and the weight ratio of pulvis and liquor is 3.1, wherein:
Silicate cement 43kg, aluminosulfate cement 14kg, gypsum 5kg, quartz sand 38kg, dry powder defoamer 0.2kg, organosilicon moisture repellent 0.3kg, hardening accelerator 0.2kg, water reducer 0.3kg, retardant 0.3kg, promoting agent 4kg;
Polymer emulsion 15kg, defoamer 0.06kg, mildew-resistant algaecide 0.1kg, liquid water reducer 0.1kg, water 19kg.
The preparation method of the inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting is with embodiment 1.
Embodiment 4
The inorganic water-proofing material for stopping leak of a kind of self-healing property slow setting, comprises pulvis and liquor, and the weight ratio of pulvis and liquor is 3.3, wherein:
Silicate cement 45kg, aluminosulfate cement 15kg, gypsum 5kg, quartz sand 40.25kg, dry powder defoamer 0.2kg, organosilicon moisture repellent 0.3kg, hardening accelerator 0.2kg, water reducer 0.3kg, retardant 0.3kg, promoting agent 6kg;
Polymer emulsion 14.5kg, defoamer 0.05kg, mildew-resistant algaecide 0.1kg, liquid water reducer 0.1kg, water 19kg.
The preparation method of the inorganic water-proofing material for stopping leak of above-mentioned self-healing property slow setting is with embodiment 1.
5 time of coagulation of embodiment and early strength test
The inorganic water-proofing material for stopping leak of self-healing slow setting to embodiment 2 and the Portland cement based penetrant crystalline water-proof material of comparative example carry out the test of time of coagulation, and test result is as shown in table 1.
Wherein, the Portland cement based penetrant crystalline water-proof material that comparative example is used, its component comprises silicate cement, quartz sand, calcium carbonate, fumaric acid, calcium chloride, promoting agent, Tai-Ace S 150 and defoamer, wherein, promoting agent is Sodium hexametaphosphate 99.The function that this promoting agent does not have penetrant crystalline and automatically repairs.
And promoting agent in embodiment 2 can infiltrate the inner acicular crystals that forms of basic unit with water in the inorganic water-proofing material for stopping leak of self-healing slow setting, the pore of plugging cement basic unit and defects i.e.cracks, thereby the impervious pressure of this water-proof material is strengthened, to reach lasting waterproof effect, and extend its work-ing life, can not reduce again intensity simultaneously.The active substance of coating sealing can produce at Defect Base place secondary crystal after meeting water, has the function of the defects such as automatic reparation tiny crack, and anti-basic unit changes strong.
The inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 and the ortho-water of comparative example under table 1 differing temps
Table time of coagulation of mud based penetrant crystalline water-proof material
As can be seen from Table 1, the presetting period of the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 and final setting time are all short than Portland cement based penetrant crystalline water-proof material, and the shrinking percentage of the water-proof material of embodiment 2 is lower by 63.6% than the shrinking percentage of the water-proof material of comparative example.
The early strength test chart of the inorganic water-proofing material for stopping leak of self-healing slow setting of table 2 embodiment 2 and the Portland cement based penetrant crystalline water-proof material of comparative example
As can be seen from Table 2, the ultimate compression strength of the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 and folding strength are all higher than the Portland cement based penetrant crystalline water-proof material of comparative example.
The curing form of the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 and the Portland cement based penetrant crystalline water-proof material of comparative example solidify form as shown in Figure 1.Wherein, the left side of Fig. 1 is the curing aspect graph of the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2, the curing aspect graph of the Portland cement based penetrant crystalline water-proof material that right side is comparative example.
As seen from Figure 1, adopt the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 because adopting tri compound gelling system, accelerated system early hydration speed, just completely curing at 3-6 hour.
Embodiment 6 product performance tests
According to the inorganic water-proofing material for stopping leak of GB GB23440-2009, the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 is tested, test result is as shown in table 3.
According to GB18445-2001 cement-base infiltration crystallization water-proof material, the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 is tested, test result is as shown in table 4.
The performance of the inorganic water-proofing material for stopping leak of self-healing slow setting of table 3 embodiment 2
The performance of the inorganic water-proofing material for stopping leak of self-healing slow setting of table 4 embodiment 2
From table 3 and table 4, the performance index of the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 meet the regulation of GB23440-2009 and GB18445-2001.Have advantages of that final setting time is short, ultimate compression strength is high, anti-permeability performance is good and good water-proof effect.
As shown in Figure 2, the inorganic water-proofing material for stopping leak of self-healing slow setting of embodiment 2 can be coated on concrete substrate and carry out waterproofing protection, and the crystallization of generation is infiltrated in seam and stopped up hole, stops infiltration.And in the time that concrete substrate occurs crack again, the promoting agent being enclosed in concrete base layer discharges automatically, can bring in crack gradually further polymerization into water and produce stable xln to seal the passage of water, thereby play the effect of stopping up and automatically supplying a gap, complete secondary reparation.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. the inorganic water-proofing material for stopping leak of self-healing property slow setting, is characterized in that, comprises that weight ratio is pulvis and the liquor of 2.3-3.3, by weight,
Described pulvis comprises following component:
The molecular structural formula of silicate cement 40-45 part, aluminosulfate cement 12-15 part, gypsum 3-5 part, quartz sand 29-40.25 part, dry powder defoamer 0.1-0.2 part, organosilicon moisture repellent 0.2-0.3 part, hardening accelerator 0.15-0.2 part, water reducer 0.2-0.3 part, retardant 0.2-0.3 part, promoting agent 3-6 part, described promoting agent is Ca (O-SiR-OH)
2, wherein R is alkyl group;
Described liquor comprises following component:
Polymer emulsion 14.5-16.5 part, defoamer 0.05-0.1 part, mildew-resistant algaecide 0.1-0.2 part, liquid water reducer 0.1-0.2 part, water 19-21.3 part.
2. the inorganic water-proofing material for stopping leak of self-healing property slow setting according to claim 1, is characterized in that, described pulvis comprises following component:
Silicate cement 41-43 part, aluminosulfate cement 12-14 part, gypsum 3-5 part, quartz sand 35-38 part, dry powder defoamer 0.1-0.2 part, organosilicon moisture repellent 0.2-0.3 part, hardening accelerator 0.15-0.2 part, water reducer 0.2-0.3 part, retardant 0.2-0.3 part, promoting agent 3-4 part.
3. the inorganic water-proofing material for stopping leak of self-healing property slow setting according to claim 1, is characterized in that, described liquor comprises following component:
15 parts of polymer emulsions, defoamer 0.06-0.08 part, mildew-resistant algaecide 0.1-0.2 part, liquid water reducer 0.1-0.2 part, water 19-20 part.
4. the inorganic water-proofing material for stopping leak of self-healing property slow setting according to claim 1, it is characterized in that, described dry powder defoamer is organosilicon powder defoamer, and described hardening accelerator is Quilonum Retard, described water reducer is the sulfonated polycondensate powder of melamine type, and described retardant is Sunmorl N 60S and tartrate.
5. according to the inorganic water-proofing material for stopping leak of self-healing property slow setting described in claim 1-4 any one, it is characterized in that, described polymer emulsion is styrene-butadiene emulsion, and described defoamer is mineral oil defoaming agent, described mildew-resistant algaecide is isothiazolinone, and described liquid water reducer is polycarboxylate water-reducer.
6. a preparation method for the inorganic water-proofing material for stopping leak of self-healing property slow setting, is characterized in that, comprises the following steps:
(1) by weight, take silicate cement 40-45 part, aluminosulfate cement 12-15 part, quartz sand 29-40.25 part, add the quartz sand of the silicate cement of 50% weight part and the aluminosulfate cement of 50% weight part and 98% weight part, more slowly drop into 3-5 part gypsum, obtain mixture A;
Adopt quartz sand mixing 0.1-0.2 part dry powder defoamer of 2% weight part, 0.2-0.3 part organosilicon moisture repellent, 0.15-0.2 part hardening accelerator, 0.2-0.3 part water reducer, 0.2-0.3 part retardant, 3-6 part promoting agent, obtains mixture B;
Mixture A and mixture B are mixed, then add the silicate cement of 50% weight part and the aluminosulfate cement of 50% weight part, stir, obtain pulvis;
(2) take the water of 19-21.3 weight part, in the water of 50% weight part, drop into 14.5-16.5 part polymer emulsion, under the rotating speed of 300-500rpm, disperse 3-5 minute, under the rotating speed of 300-500rpm, slowly add again the water of remaining 50% weight part, 0.05-0.1 part defoamer, 0.1-0.2 part mildew-resistant algaecide, 0.1-0.2 part liquid water reducer, obtains liquor;
(3) be that 2.3-3.3 mixes by described pulvis and described liquor according to weight ratio, obtain the inorganic water-proofing material for stopping leak of self-healing property slow setting.
7. the preparation method of the inorganic water-proofing material for stopping leak of self-healing property slow setting according to claim 6, it is characterized in that, described dry powder defoamer is organosilicon powder defoamer, described hardening accelerator is Quilonum Retard, described water reducer is the sulfonated polycondensate powder of melamine type, and described retardant is Sunmorl N 60S and tartrate.
8. the preparation method of the inorganic water-proofing material for stopping leak of self-healing property slow setting according to claim 6, it is characterized in that, described polymer emulsion is styrene-butadiene emulsion, described defoamer is mineral oil defoaming agent, described mildew-resistant algaecide is isothiazolinone, and described liquid water reducer is polycarboxylate water-reducer.
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