CN106673488A - Preparation method of self-repair anti-crack concrete waterproofing agent - Google Patents
Preparation method of self-repair anti-crack concrete waterproofing agent Download PDFInfo
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- CN106673488A CN106673488A CN201611030249.2A CN201611030249A CN106673488A CN 106673488 A CN106673488 A CN 106673488A CN 201611030249 A CN201611030249 A CN 201611030249A CN 106673488 A CN106673488 A CN 106673488A
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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
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/10—Carbohydrates or derivatives thereof
-
- 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
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
- C04B24/42—Organo-silicon compounds
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a preparation method of a self-repair anti-crack concrete waterproofing agent, and belongs to the technical field of concrete admixture preparation. Hydrogen-containing silicone oil reacts under an alkaline condition to obtain silicone resin, calcined egg shells react with water and then react with gluconic acid to obtain calcium gluconate, the compounding of calcium gluconate and calcium silicate can reduce the hydration reaction heat of concrete and reduce the internal temperature rise of concrete, so as to reduce cracks, calcium gluconate can react with unreacted concrete to form dense hydration crystals to plug off the cracks of concrete, and calcium gluconate can achieve the purpose of waterproofing together with castor oil or other oil substances. The obtained self-repair anti-crack concrete waterproofing agent with the preparation method of the invention has good shrinkage compensation function, and effectively improves the anti-crack property, waterproof property and water impermeability of concrete; the admixture amount of the waterproofing agent is less, the early strength of concrete is increased, setting time is adjusted, and the durability of concrete is improved. The self-repair anti-crack concrete waterproofing agent has broad application prospects.
Description
Technical field
The invention discloses a kind of preparation method of selfreparing anti-crack concrete waterproofing agent, belongs to concrete admixture preparation
Technical field.
Background technology
Waterproof is to improve the important measures of cement concrete constructions durability, even essential measure.Cement concrete is tied
The water resistance of structure substantially determines its endurance quality.Either the soft water erosion of cement concrete, freeze-thaw damage, alkali gather materials
Reaction, steel bar corrosion and sulphate corrosion etc., or the reinforcing bar oxide etch in cement concrete, or even water conservancy project, maritime structrue
Corrosion, all be unable to do without the effect of water, the participation without water, most of erosion is hardly produced.Further, since coagulating cement
Microfissure that may be present between aggregate and Binder Materials in soil, moisture can deepen continuously in cement concrete, participate in water
The corrosion of reinforcing bar in cement concrete or cement concrete.In order to prevent the invasion of moisture, the water resistant of cement concrete constructions is improved
Erosion performance and endurance quality, have studied many kinds of measures, and the such as high compactness concrete of Adding Mineral Admixtures, low water binder ratio is mixed
Solidifying soil, surface waterproofing coating and concrete bleed etc..Waterproofing agent is filled in cement concrete, compactness concrete is formed or is hated
The native purpose to reach waterproof of water coagulation, is presently the most a kind of effective technological approaches.
Existing mortar, concrete waterproofer mainly have two classes：Silicone waterproofing agent and inorganic aluminum salt waterproofing agent.Have
The main component of machine silicon class waterproofing agent is methyl silicon sodium alcoholate（Potassium）With fluorine sodium silanolate（Potassium）, it is a kind of water solublity of molecular weight
Polymer, is easily decomposed to form the water-fast methyl silicon ether waterproof membrane with water resistance by weak acid, and waterproof membrane is enclosed in mixed
Coagulate between the constituent particle of soil and there is hydrophobicity performance；Inorganic aluminum salt waterproofing agent be with aluminium salt and Calcium Carbonate as primary raw material,
It is aided with plurality of inorganic salt to make, with the features such as impervious, freeze proof, heat-resisting, early rapid hardening by force, its water-proof mechanism is and the water in cement
Change calcium aluminate effect, generate and there is certain expansile double salt calcium sulphoaluminate crystal, these crystal are filled in xoncrete structure
In capillary porosity, the passage of water translocation is blocked, so as to improve the density and water proof anti-seepage ability of concrete.
It is existing because concrete can cause volume contraction in cast hardening process because of the reason such as shrinkage or drying shrinkage
The major defect of these concrete waterproofers is the contraction fissure for being unable to compensating concrete, therefore the shrinkage cracking meeting of concrete
Its waterproof impervious characteristic is set to be greatly affected, in addition existing concrete waterproofer also has that performance is single, function is not perfect enough
Shortcoming.
The content of the invention
Present invention mainly solves technical problem：The contraction for being unable to compensating concrete for existing concrete waterproofer is split
Seam, causes concrete water-proof anti-permeability performance to be deteriorated, and existing concrete waterproofer is also present, and performance is single, function is not perfect enough
Defect, there is provided one kind adds organic silicon water-proofing material with calcium gluconate and calcium silicates as anticracking material, then with cellulose,
Fat liquor prepares the method for obtaining selfreparing anti-crack concrete waterproofing agent, and the present invention is first by containing hydrogen silicone oil in alkalescence condition
Lower reaction generates organic siliconresin, after subsequently reacting the Ovum crusta Gallus domesticuss after calcining and water, then reacts to obtain glucose with gluconic acid
Sour calcium, calcium gluconate coordinates the hydrated reaction heat that can reduce concrete with calcium silicates, reduces inside concrete and heats up, so as to subtract
Crack, and calcium gluconate less can react to form fine and close aquation crystal, the crack of blocking concrete with reacted cement, then match somebody with somebody
The oil substances such as Oleum Ricini are closed, waterproof purpose is reached, the obtained selfreparing anti-crack concrete waterproofing agent of the present invention has preferable
Shrinkage-compensating function, effectively increase the cracking resistance and waterproof impervious characteristic of concrete, and waterproofing agent volume is few, can improve coagulation
Native early strength, and setting time is adjusted, the durability of concrete is improved, it is with a wide range of applications.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）Measure 100~200mL containing hydrogen silicone oils to be added in the there-necked flask with thermometer and reflux, be placed in oil
In bath, 80~90 DEG C are warming up to, add 200~300mL mass fractions for 15% sodium hydroxide solution, magnetic agitation reaction 2
~3h, after reaction terminates, 10~15g Tetramethylammonium hydroxide is added in flask, is warming up to 130~140 DEG C, stirring reaction
After 3~4h so as to after natural cooling, stratification, collected organic layer is standby；
（2）400~500g Ovum crusta Gallus domesticuss are taken, is washed with water 3~5 times, clean eggshell is placed in pulverizer and is crushed, and excessively 80~
100 mesh sieves, collect sieving, in being placed in Muffle furnace, after calcining 2~3h at 1000~1100 DEG C so as to cool to the furnace
Room temperature, obtains calcined material, takes 100~200g calcined materials and is placed in beaker, adds 1~2L water, 40~50min of stirring reaction,
Obtain reactant liquor；
（3）120~150mL of Deca mass fractions are 25% gluconic acid solution in above-mentioned reactant liquor, in 15~20min of control
Completion of dropping, and above-mentioned beaker is placed in into digital display tests the speed in constant temperature blender with magnetic force, in temperature be stirring reaction 1 at 80~90 DEG C
~2h, reaction terminates, and filters, and collects filtrate, and is spray-dried, and obtains dried object, i.e. calcium gluconate, standby；
（4）40~50g Oleum Ricini, 15~20g Oleum Terebinthinaes and 100~200mL water are weighed, in being added to beaker, and it is carried out
85~90 DEG C, after 20~30min of magnetic agitation are heated to, 3~5g dodecylbenzene sodium sulfonate is added, 15~20min is stirred,
Obtain emulsion；
（5）Count by weight, weigh 30~40 parts of steps（1）Standby organic layer, 10~15 parts of steps（3）Standby Fructus Vitis viniferae
Calciofon, 8~12 parts of above-mentioned emulsions, 2~3 parts of carboxymethyl celluloses and 1~3 part of calcium silicates, in being added to blender, stirring is mixed
After closing 20~30min, being placed in vacuum freeze drier carries out lyophilization, and dried material is placed in into ball milling in ball mill
1~2h, you can obtain selfreparing anti-crack concrete waterproofing agent.
The present invention application process be：In mass ratio 4: 10:1:3, sand, aggregate, hot water, cement are put into concrete and are stirred
Mix and stir in car 1min, be subsequently added selfreparing anti-crack concrete waterproofing agent obtained in the present invention and continue to stir 3~5min, waterproof
Agent consumption is the 3~5% of cement consumption, then the concrete mix poker vibrator after stirring and evenly mixing is poured into steel
In the concrete-pouring template of muscle and built-in fitting, while do not stop to beat template, until pour complete, complete mixed will be finally poured
Solidifying soil component stands maintenance 10~15 days, form removal.After testing, the obtained selfreparing anti-crack concrete waterproof of the present invention
Agent water-reducing rate is 18~22%, and the presetting period is 10~15h, and it is 0.055~0.075% that 7 days limited expansion rates are conserved in water, is turned
To enter deposited in air 21 days limited expansion rates is -0.008~-0.005%, and waterproof impervious characteristic is excellent, and seepage-resistant grade is P25, quiet
Comprcssive strength is up to 28~32MPa after putting 3 days, and concrete waterproofer of the present invention can effectively improve concrete durability, after use
Concrete service life improve 7~9 years compared with normal concrete.
The invention has the beneficial effects as follows：
（1）Obtained selfreparing anti-crack concrete waterproofing agent of the invention not only increases the density of concrete, comprcssive strength, and
Concrete waterproofer of the present invention has preferable shrinkage-compensating function, can effectively improve cracking of reinforced concrete, so as to improve its morning
Phase intensity, and setting time is adjusted, improve the durability of concrete；
（2）Obtained selfreparing anti-crack concrete waterproofing agent of the invention improves the water impermeability of concrete, effectively prevents
Erosion of the hazardous medium to concrete, extends the service life of concrete structures.
Specific embodiment
Measure 100~200mL containing hydrogen silicone oils first to be added in the there-necked flask with thermometer and reflux, juxtaposition
In oil bath pan, 80~90 DEG C are warming up to, add 200~300mL mass fractions for 15% sodium hydroxide solution, magnetic agitation
2~3h of reaction, after reaction terminates, 10~15g Tetramethylammonium hydroxide is added in flask, is warming up to 130~140 DEG C, is stirred
After mixing 3~4h of reaction so as to after natural cooling, stratification, collected organic layer is standby；400~500g Ovum crusta Gallus domesticuss are subsequently taken,
Wash with water 3~5 times, clean eggshell is placed in pulverizer and is crushed, and cross 80~100 mesh sieves, collect sieving, be placed in
In Muffle furnace, calcine after 2~3h at 1000~1100 DEG C so as to cool to room temperature with the furnace, obtain calcined material, take 100~
200g calcined materials are placed in beaker, add 1~2L water, and 40~50min of stirring reaction obtains reactant liquor；Again to above-mentioned reaction
120~150mL of Deca mass fractions are 25% gluconic acid solution in liquid, control completion of dropping in 15~20min, and will be above-mentioned
Beaker is placed in digital display and tests the speed in constant temperature blender with magnetic force, and 1~2h of stirring reaction at temperature is for 80~90 DEG C, reaction terminates, mistake
Filter, collects filtrate, and is spray-dried, and obtains dried object, i.e. calcium gluconate, standby；Weigh again 40~50g Oleum Ricini,
15~20g Oleum Terebinthinaes and 100~200mL water, in being added to beaker, and carry out being heated to 85~90 DEG C, magnetic agitation 20 to it
After~30min, 3~5g dodecylbenzene sodium sulfonate is added, stir 15~20min, obtain emulsion；By weight finally
Meter, weigh 30~40 parts of above-mentioned standby organic layers, 10~15 parts of above-mentioned standby calcium gluconate, 8~12 parts of above-mentioned emulsions,
2~3 parts of carboxymethyl celluloses and 1~3 part of calcium silicates, in being added to blender, after stirring 20~30min of mixing, are placed in vacuum
Lyophilization is carried out in freezer dryer, dried material is placed in into 1~2h of ball milling in ball mill, you can obtained selfreparing and resist
Split concrete waterproofer.
Example 1
100mL containing hydrogen silicone oils are measured first to be added in the there-necked flask with thermometer and reflux, are placed in oil bath pan
In, 80 DEG C are warming up to, it is 15% sodium hydroxide solution to add 200mL mass fractions, and magnetic agitation reaction 2h is reacted after terminating,
10g Tetramethylammonium hydroxide is added in flask, 130 DEG C, after stirring reaction 3h is warming up to so as to after natural cooling, is stood
Layering, collected organic layer is standby；400g Ovum crusta Gallus domesticuss are subsequently taken, is washed with water 3 times, clean eggshell is placed in into powder in pulverizer
It is broken, and 80 mesh sieves are crossed, sieving is collected, in being placed in Muffle furnace, after calcining 2h at 1000 DEG C so as to cool to room with the furnace
Temperature, obtains calcined material, takes 100g calcined materials and is placed in beaker, adds 1L water, and stirring reaction 40min obtains reactant liquor；Again to
Deca 120mL mass fraction is 25% gluconic acid solution in above-mentioned reactant liquor, completion of dropping in control 15min, and by above-mentioned burning
Cup is placed in digital display and tests the speed in constant temperature blender with magnetic force, and stirring reaction 1h at temperature is for 80 DEG C, reaction terminates, and filters, and collects filter
Liquid, and be spray-dried, dried object, i.e. calcium gluconate are obtained, it is standby；Weigh again 40g Oleum Ricini, 15g Oleum Terebinthinaes and
100mL water, in being added to beaker, and carries out being heated to 85 DEG C, after magnetic agitation 20min to it, adds 3g detergent alkylates
Sodium sulfonate, stirs 15min, obtains emulsion；Finally count by weight, weigh 30 parts of above-mentioned standby organic layers, 10 parts it is above-mentioned
Standby calcium gluconate, 8 parts of above-mentioned emulsions, 2 parts of carboxymethyl celluloses and 1 part of calcium silicates, in being added to blender, stirring is mixed
After closing 20min, being placed in vacuum freeze drier carries out lyophilization, and dried material is placed in into ball milling 1h in ball mill,
Selfreparing anti-crack concrete waterproofing agent is obtained.
This example operation is easy, when using, in mass ratio 4: 10:1:3, sand, aggregate, hot water, cement are put into into concrete
1min is stirred in trucd mixer, selfreparing anti-crack concrete waterproofing agent obtained in the present invention is subsequently added and is continued to stir 3min, waterproof
Agent consumption is the 3% of cement consumption, then the concrete mix poker vibrator after stirring and evenly mixing is poured into reinforcing bar and
In the concrete-pouring template of built-in fitting, while not stopping to beat template, until pour completing, the concrete for completing will be finally poured
Component stands maintenance 10 days, form removal.After testing, the obtained selfreparing anti-crack concrete waterproofing agent water-reducing rate of the present invention
For 18%, the presetting period is 10h, and it is 0.055% that 7 days limited expansion rates are conserved in water, to proceed to deposited in air and limits within 21 days swollen
Swollen rate is -0.008%, and waterproof impervious characteristic is excellent, and seepage-resistant grade is P25, and comprcssive strength reaches 28MPa, and this after standing 3 days
Bright concrete waterproofer can effectively improve concrete durability, and the concrete service life after use improves compared with normal concrete
7 years.
Example 2
150mL containing hydrogen silicone oils are measured first to be added in the there-necked flask with thermometer and reflux, are placed in oil bath pan
In, 85 DEG C are warming up to, it is 15% sodium hydroxide solution to add 250mL mass fractions, and magnetic agitation reaction 2h is reacted after terminating,
13g Tetramethylammonium hydroxide is added in flask, 135 DEG C, after stirring reaction 3h is warming up to so as to after natural cooling, is stood
Layering, collected organic layer is standby；450g Ovum crusta Gallus domesticuss are subsequently taken, is washed with water 4 times, clean eggshell is placed in into powder in pulverizer
It is broken, and 90 mesh sieves are crossed, sieving is collected, in being placed in Muffle furnace, after calcining 2h at 1050 DEG C so as to cool to room with the furnace
Temperature, obtains calcined material, takes 150g calcined materials and is placed in beaker, adds 1L water, and stirring reaction 45min obtains reactant liquor；Again to
Deca 135mL mass fraction is 25% gluconic acid solution in above-mentioned reactant liquor, completion of dropping in control 18min, and by above-mentioned burning
Cup is placed in digital display and tests the speed in constant temperature blender with magnetic force, and stirring reaction 1h at temperature is for 85 DEG C, reaction terminates, and filters, and collects filter
Liquid, and be spray-dried, dried object, i.e. calcium gluconate are obtained, it is standby；Weigh again 45g Oleum Ricini, 18g Oleum Terebinthinaes and
150mL water, in being added to beaker, and carries out being heated to 88 DEG C, after magnetic agitation 25min to it, adds 4g detergent alkylates
Sodium sulfonate, stirs 18min, obtains emulsion；Finally count by weight, weigh 35 parts of above-mentioned standby organic layers, 13 parts it is above-mentioned
Standby calcium gluconate, 10 parts of above-mentioned emulsions, 2 parts of carboxymethyl celluloses and 2 parts of calcium silicates, in being added to blender, stirring
After mixing 25min, being placed in vacuum freeze drier carries out lyophilization, and dried material is placed in into ball milling in ball mill
1h, you can obtain selfreparing anti-crack concrete waterproofing agent.
This example operation is easy, when using, in mass ratio 4: 10:1:3, sand, aggregate, hot water, cement are put into into concrete
1min is stirred in trucd mixer, selfreparing anti-crack concrete waterproofing agent obtained in the present invention is subsequently added and is continued to stir 4min, waterproof
Agent consumption is the 4% of cement consumption, then the concrete mix poker vibrator after stirring and evenly mixing is poured into reinforcing bar and
In the concrete-pouring template of built-in fitting, while not stopping to beat template, until pour completing, the concrete for completing will be finally poured
Component stands maintenance 13 days, form removal.After testing, the obtained selfreparing anti-crack concrete waterproofing agent water-reducing rate of the present invention
For 20%, the presetting period is 13h, and it is 0.065% that 7 days limited expansion rates are conserved in water, to proceed to deposited in air and limits within 21 days swollen
Swollen rate be -0.006%, waterproof impervious characteristic is excellent, and seepage-resistant grade is P25, stand 3 days after comprcssive strength up to 30 MPa, and this
Bright concrete waterproofer can effectively improve concrete durability, and the concrete service life after use improves compared with normal concrete
8 years.
Example 3
200mL containing hydrogen silicone oils are measured first to be added in the there-necked flask with thermometer and reflux, are placed in oil bath pan
In, 90 DEG C are warming up to, it is 15% sodium hydroxide solution to add 300mL mass fractions, and magnetic agitation reaction 3h is reacted after terminating,
15g Tetramethylammonium hydroxide is added in flask, 140 DEG C, after stirring reaction 4h is warming up to so as to after natural cooling, is stood
Layering, collected organic layer is standby；500g Ovum crusta Gallus domesticuss are subsequently taken, is washed with water 5 times, clean eggshell is placed in into powder in pulverizer
It is broken, and 100 mesh sieves are crossed, sieving is collected, in being placed in Muffle furnace, after calcining 3h at 1100 DEG C so as to cool to room with the furnace
Temperature, obtains calcined material, takes 200g calcined materials and is placed in beaker, adds 2L water, and stirring reaction 50min obtains reactant liquor；Again to
Deca 150mL mass fraction is 25% gluconic acid solution in above-mentioned reactant liquor, completion of dropping in control 20min, and by above-mentioned burning
Cup is placed in digital display and tests the speed in constant temperature blender with magnetic force, and stirring reaction 2h at temperature is for 90 DEG C, reaction terminates, and filters, and collects filter
Liquid, and be spray-dried, dried object, i.e. calcium gluconate are obtained, it is standby；Weigh again 50g Oleum Ricini, 20g Oleum Terebinthinaes and
200mL water, in being added to beaker, and carries out being heated to 90 DEG C, after magnetic agitation 30min to it, adds 5g detergent alkylates
Sodium sulfonate, stirs 20min, obtains emulsion；Finally count by weight, weigh 40 parts of above-mentioned standby organic layers, 15 parts it is above-mentioned
Standby calcium gluconate, 12 parts of above-mentioned emulsions, 3 parts of carboxymethyl celluloses and 3 parts of calcium silicates, in being added to blender, stirring
After mixing 30min, being placed in vacuum freeze drier carries out lyophilization, and dried material is placed in into ball milling in ball mill
2h, you can obtain selfreparing anti-crack concrete waterproofing agent.
This example operation is easy, when using, in mass ratio 4: 10:1:3, sand, aggregate, hot water, cement are put into into concrete
1min is stirred in trucd mixer, selfreparing anti-crack concrete waterproofing agent obtained in the present invention is subsequently added and is continued to stir 5min, waterproof
Agent consumption is the 5% of cement consumption, then the concrete mix poker vibrator after stirring and evenly mixing is poured into reinforcing bar and
In the concrete-pouring template of built-in fitting, while not stopping to beat template, until pour completing, the concrete for completing will be finally poured
Component stands maintenance 15 days, form removal.After testing, the obtained selfreparing anti-crack concrete waterproofing agent water-reducing rate of the present invention
For 22%, the presetting period is 15h, and it is 0.075% that 7 days limited expansion rates are conserved in water, to proceed to deposited in air and limits within 21 days swollen
Swollen rate be -0.005%, waterproof impervious characteristic is excellent, and seepage-resistant grade is P25, stand 3 days after comprcssive strength up to 32 MPa, and this
Bright concrete waterproofer can effectively improve concrete durability, and the concrete service life after use improves compared with normal concrete
9 years.
Claims (1)
1. a kind of preparation method of selfreparing anti-crack concrete waterproofing agent, it is characterised in that concrete preparation process is：
（1）Measure 100~200mL containing hydrogen silicone oils to be added in the there-necked flask with thermometer and reflux, be placed in oil
In bath, 80~90 DEG C are warming up to, add 200~300mL mass fractions for 15% sodium hydroxide solution, magnetic agitation reaction 2
~3h, after reaction terminates, 10~15g Tetramethylammonium hydroxide is added in flask, is warming up to 130~140 DEG C, stirring reaction
3~4h so as to after natural cooling, stratification, collected organic layer is standby；
（2）400~500g Ovum crusta Gallus domesticuss are taken, is washed with water 3~5 times, clean eggshell is placed in pulverizer and is crushed, and excessively 80~
100 mesh sieves, collect sieving, in being placed in Muffle furnace, after calcining 2~3h at 1000~1100 DEG C so as to cool to the furnace
Room temperature, obtains calcined material, takes 100~200g calcined materials and is placed in beaker, adds 1~2L water, 40~50min of stirring reaction,
Obtain reactant liquor；
（3）120~150mL of Deca mass fractions are 25% gluconic acid solution in above-mentioned reactant liquor, in 15~20min of control
Completion of dropping, and above-mentioned beaker is placed in into digital display tests the speed in constant temperature blender with magnetic force, in temperature be stirring reaction 1 at 80~90 DEG C
~2h, reaction terminates, and filters, and collects filtrate, and is spray-dried, and obtains dried object, i.e. calcium gluconate, standby；
（4）40~50g Oleum Ricini, 15~20g Oleum Terebinthinaes and 100~200mL water are weighed, in being added to beaker, and it is carried out
85~90 DEG C, after 20~30min of magnetic agitation are heated to, 3~5g dodecylbenzene sodium sulfonate is added, 15~20min is stirred,
Obtain emulsion；
（5）Count by weight, weigh 30~40 parts of steps（1）Standby organic layer, 10~15 parts of steps（3）Standby Fructus Vitis viniferae
Calciofon, 8~12 parts of above-mentioned emulsions, 2~3 parts of carboxymethyl celluloses and 1~3 part of calcium silicates, in being added to blender, stirring is mixed
After closing 20~30min, being placed in vacuum freeze drier carries out lyophilization, and dried material is placed in into ball milling in ball mill
1~2h, you can obtain selfreparing anti-crack concrete waterproofing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611030249.2A CN106673488A (en) | 2016-11-22 | 2016-11-22 | Preparation method of self-repair anti-crack concrete waterproofing agent |
Applications Claiming Priority (1)
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| CN114180916A (en) * | 2021-12-08 | 2022-03-15 | 深圳市恒星建材有限公司 | Light high-strength anti-cracking self-repairing tuff concrete and preparation method thereof |
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Application publication date: 20170517 |