CN110104988A - A kind of concrete waterproof compacting agent - Google Patents
A kind of concrete waterproof compacting agent Download PDFInfo
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- CN110104988A CN110104988A CN201910235988.2A CN201910235988A CN110104988A CN 110104988 A CN110104988 A CN 110104988A CN 201910235988 A CN201910235988 A CN 201910235988A CN 110104988 A CN110104988 A CN 110104988A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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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
- 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
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Abstract
The invention discloses a kind of concrete waterproof compacting agents, belong to additives for building materials field.The present invention is constituted the dual cross-linked hydrogel ingredient of hydrophobic association with silicone grease rock combination macromolecular components, while stablizing raising interior mechanics intensity, make it have self-healing properties, improve the dispersibility inside this system, the shrinkage degree that concrete can also be controlled to a certain extent avoids the appearance of cracking.When being applied to concrete and water mixes exothermic effects, can promote this compacting agent ingredient that solid-solid phase-change effect occurs, thus, shrinking percentage is also not to increase excessive.Calcium carbonate microparticle is generated in conjunction with calcium ion to be filled, and improves dense effect.Stable nanoemulsions are formed by synergistic effect, increase the contact angle between concrete, can avoid cracking while waterproof, shrinking closely knit.The waterproof effect that the present invention solves common concrete waterproof compacting agent at present is bad, easily causes concrete contraction percentage increase after use, the problem of cracking.
Description
Technical field
The invention belongs to additives for building materials fields, and in particular to a kind of concrete waterproof compacting agent.
Background technique
With the increase of modern concrete project amount and the shortening of construction period, some ask inevitably is exposed
Topic, if there have been crosscutting concerns in 2 ~ 3d after pouring for some dams, floorings, many Cast-in-situ Beams, plate are in just dismounting mould
There have been different degrees of cracks in 6 ~ 12h after plate even pours, and cracking is mainly by the contraction of temperature stress and concrete
Caused by equal non-stress deformation.Wherein the early-age crack of concrete is even more important, because later period cracking is in early-age crack or morning
On the basis of phase potential cracking, after so that the durability of concrete is wrecked by external force (load, external environment erosion etc.) effect
Develop and is evolved.Therefore, concrete cracking risk is reduced by control concrete early stage volume contraction, it is mixed for improving
Solidifying soil long durability can be of great significance.
The measure for adding swelling agent (such as UEA, AEA, CEA), the impermeability of Lai Gaishan concrete are generallyd use in engineering
And splitting resistance, but since swelling agent aquation itself needs a large amount of water, and the heat of hydration is high, later period inside concrete due to
Water shortage and be difficult to maintain to expand, self-constriction and shrinkage can be increased instead, cause using failure example it is very much.Existing frequently-used is anti-
Water compacting agent mainly has higher aliphatic acids, triethanolamine, iron chloride etc. several.Higher aliphatic acids compound is as anti-watertight
Real agent is commonly used in the architectural engineering of developed country, and this kind of compound can make the capillary suction in concrete obvious
It reduces, but the increase of incorporation, intensity can reduce, and waterproofness can reduce in the case where its Long term immersion.Triethanolamine, chlorine
Change iron and be also often used as waterproof compacting agent, can effectively improve the impermeability of concrete, but not can solve concrete
Problem of Cracking, and triethanolamine dosage is improper, easily causes to seriously endanger to later concrete hardening capacity, the internal portion of chlorination iron rule
Reinforcing bar has corrosiveness, is used by limitation.
Compacting agent is the special concrete close material containing activity of cement ingredient, reinforcing ingredient.Compacting agent can effectively hinder
Sealing molecule infiltration improves concrete impermeability, while can be improved concrete strength, have good anti-permeability performance, alkaline-resisting acid,
The features such as high-low temperature resistant, chloride ion content are low, tasteless, nontoxic, pollution-free, corrosion-free to reinforcing bar is preventing concrete moisture from seeping
Play a significant role in thoroughly, is widely used in Practical Project.
In addition, current waterproofing agent product category is more, there are inorganic water-proof agent, organic waterproof agent and composite water-proof agent.Make
With mostly to reduce hole and filling capillary channel, material is reduced based on the permeability under hydrostatic pressing.Wherein inorganic water-proof agent master
It to include chloride salt waterproofing agent, waterglass system (sodium metasilicate class) waterproofing agent, aluminium salt class waterproofing agent and other inorganic water-proof agents.Compare
Common chloride salt waterproofing agent has the waterproofing agents such as calcium chloride waterproofing agent, ferric chloride waterproofing agent, alchlor, such waterproofing agent can be with
C3A, calcium hydroxide etc. generate indissoluble solution colloidal substance, and the micropore between filling and closing cement sandstone improves the close of Behavior of Hardened Cement Paste
Reality and impermeability；Waterglass system (sodium metasilicate class) waterproofing agent is mostly aided with copper sulphate, aluminum aluminum sulfate etc. as base-material using waterglass and matches
It sets into oily liquids, mainly generates insoluble calcium silicates using sodium metasilicate and hydrolysis product of cement calcium hydroxide, block hair
Cement density is improved in thin channel, and wherein Sulfates then play the role of that cement is promoted to generate gelatinous mass；Inorganic aluminate is anti-
Aqua is aided with plurality of inorganic salt mostly using aluminium salt and calcium carbonate as primary raw material, and volume is generally the 3% ~ 5% of cement consumption.But make
It is required with the concrete curing condition of inorganic salts waterproofing agent high, it is also possible to corrosion be generated to concrete reinforcement, and the later period is anti-
Water effect is bad.Organic waterproofing agent is usually surfactant, can be divided into hydrophobicity plasticiser, emulsion water-proof agent and trifling
Agent.Product has methyl silicon sodium alcoholate, fluorine sodium silanolate, triethanolamine class, soaps, rubber latex etc., but due to such waterproofing agent bleed
Amount is too big, has adverse effect to concrete strength.Although and to combine inorganic waterproof material in effect good for composite water repellent
The characteristics of organic waterproof material, but current product type diversity is few, requires use environment high.Secondly in engineer application
In, most waterproofing agents can increase contraction, and shrinking excessive is one of the main reason for causing concrete cracking.With physical state
It sees, product has powdery and liquid at present, but is that the powder product product volume is high mostly, and generally 5% or so, some is up to
8%~10%。
Summary of the invention
The technical problems to be solved by the invention: it is bad for the waterproof effect of current common concrete waterproof compacting agent,
Easily cause concrete contraction percentage increase after use, the problem of cracking, provides a kind of concrete waterproof compacting agent.
In order to solve the above technical problems, the present invention is using technical solution as described below:
A kind of concrete waterproof compacting agent, including following component: 2 ~ 5 parts of volcanic ash, 1 ~ 4 part of calcium silicates, 0.3 ~ 0.7 part of tri-chlorination
Iron, 2 ~ 5 parts of glycerol, 1 ~ 4 part of defoaming agent, the closely knit base-material of 30 ~ 50 parts of composite hydrophobics, 15 ~ 25 parts of compound control water material.
The preparation method of the closely knit base-material of composite hydrophobic, includes the following steps:
(1) 1:14 ~ 20:5 in mass ratio takes pretreatment diatomite, water, acrylamide mixing ultrasonic treatment, obtains dispersion liquid, in 35 ~
50 DEG C, take dispersion liquid 30 ~ 50:2:3 in mass ratio ~ 8:5 be added dodecyldimethylammonium hydroxide inner salt, octadecyl acrylate,
The ammonium persulfate mixing of dispersion liquid quality 1 ~ 4% is added by nitrogen protection in the mixing of 2- acrylamide agent -2- methyl propane sulfonic acid,
In 55 ~ 70 DEG C of isothermal holdings, polymer is obtained；
(2) dichloroethanes mixing is added in taking polyethylene glycol 1:4 in mass ratio ~ 7, and 4 ~ 8 times of polyethylene glycol quality of triethylamine is added
It is mixed, obtains mixed liquid, the reagent A for taking mixed liquid that mixed 3 ~ 6 times of liquid quality is added is mixed, and filtering takes filtrate that filtrate matter is added
The ether mixing of amount 40 ~ 60%, filters, collects filter residue and drying, obtain reaction material, take reaction material 2 ~ 5:1:0.1:18 ~ 25 in mass ratio
N,N-DMAA, crosslinking agent, dimethyl sulfoxide is added to be mixed, purple light light irradiation, discharging, water logging, filtering takes
Filter cake is freeze-dried to get the closely knit base-material of composite hydrophobic.
Pretreatment diatomite in the step (1): 3:1 ~ 2:12:30 ~ 50 take calcium chloride, sodium chloride, silicon in mass ratio
Diatomaceous earth, water are mixed, filtering, take filter residue and drying to get pretreatment diatomite.
Reagent A in the step (2): 1:4 ~ 7 take acryloyl chloride, methylene chloride mixing to get reagent A in mass ratio.
Crosslinking agent in the step (2): 1:2 ~ 4 take 2,4,6- trimethylbenzoy-dipheny to aoxidize in mass ratio
Phosphine, the mixing of 1- hydroxycyclohexyl phenyl ketone are to get crosslinking agent.
The preparation of the compound control water material: according to the mass fraction, 8 ~ 15 parts of sodium humates, 2 ~ 5 parts of sodium bentonites, 15 are taken
~ 25 parts of stearic amides, 0.2 ~ 0.5 part of titanium dioxide, 1 ~ 4 part of auxiliary material, 12 ~ 20 parts of reagent B, take stearic acid acyl by first 70 ~ 90 DEG C
Amine, titanium dioxide are mixed, and are cooled to 50 ~ 65 DEG C, and sodium bentonite, auxiliary material, reagent B mixing is added, and shearing dispersion must be cut
Cutting bulk cargo takes shearing disperse materials vacuumize process, obtains concentrate, concentrate is taken to be washed with dehydrated alcohol, dry, obtains drying
Object takes dried object 16 ~ 25:3 in mass ratio ~ 6 that emulsification waterproof action material mixing is added to get compound control water material.
The auxiliary material: 1:2 ~ 5:1 in mass ratio takes castor oil, sodium citrate, paraffin mixing to get auxiliary material.
The reagent B: 2 ~ 5:17 in mass ratio takes copper-bath, sodium bicarbonate solution mixing to get reagent B.
The emulsification waterproof action material: 3 ~ 7:1:5:3 in mass ratio take cetyl trimethylammonium bromide, Tween-80,
N-butanol, normal octane mixing, shake in 46 ~ 56 DEG C, cooling to get emulsification waterproof action material.
The defoaming agent: 1:3 ~ 6 take dimethicone, dimethyl silicone polymer mixing to get defoaming agent in mass ratio.
The present invention is compared with other methods, and advantageous effects are:
(1) it is double to be constituted hydrophobic association with silicone grease rock combination macromolecular components with diatomite, acrylamide etc. for raw material by the present invention
Weight cross-linked hydrogel ingredient, also, serve as with hydrophobic association the first crosslinking points of gel rubber system, diatomite and polyacrylamide it
Between physisorption serve as the second crosslinking points of gel rubber system, stablize improve interior mechanics intensity while, make its tool
Have self-healing properties, be capable of providing the effect of good Spontaneous Contraction, stablize and improve dense effect, have good mechanical strength and
Anti-fatigue performance, at the same time, the macromolecule side chain of polymer having can be intercalation into diatomite surface, increase intergranular quiet
Electric repulsive interaction and spatial position effect, improve the dispersibility inside this system, can also control concrete to a certain extent
Shrinkage degree, avoid cracking appearance；
(2) for the present invention using sodium humate as macromolecular skeleton, stearmide is energy-storage function segment, and the two is passed through chemical bond
In conjunction with grafting, the intermolecular formation Hydrogenbond of sodium humate is hindered, and due to its internal steric hindrance effect, hinders tristearin
The activity space of sour segment can form the relatively brief summary crystal structure of polydispersity, vibration and rotation can only occur in fixed position,
Cause stearic acid molecule chain that cannot move freely, shows reversible solid-solid phase-change characteristic, especially when being applied to concrete,
Exothermic effects are mixed with water, can promote this compacting agent ingredient that solid-solid phase-change effect occurs, inside may make to be not heated excessive
Expansion, thus, shrinking percentage is also not to increase excessive, leads to the appearance of problem of Cracking, is added to part sodium bicarbonate in inside
And copper sulphate, the two effect can produce basic copper carbonate, can produce carbon dioxide gas after heated and get through hole, avoid shrinking
Excessively, while calcium carbonate microparticle also is generated in combination with calcium ion to be filled, improve dense effect, reduce shrinking percentage, avoid out
The problem of now cracking；
(3) present invention emulsifies waterproof action with quaternary cationics coupled ion type emulsifier Tween-80 system
Material can form stable nanoemulsions by synergistic effect, reduce the surface tension between component, increase connecing between concrete
Feeler weakens pore throat hydration swelling undergauge effect, to keep out the intrusion of hydrone, improves waterproof performance, selects alcohol carbochain longer
N-butanol be cosurfactant, facilitate surfactant molecule extension, significantly reduce surfactant molecule between phase
Interaction reduces the charge density of composite membrane so that compound film-strength becomes larger, in conjunction with compound control water material, convenient for stablizing waterproof
Functional effect can avoid the occurrence of cracking, the present invention is for common concrete water-proof at present while waterproof, shrinking closely knit
The waterproof effect of compacting agent is bad, easily causes concrete contraction percentage increase after use, and the problem of cracking, improvement is aobvious
It writes, has a good application prospect.
Specific embodiment
Defoaming agent: 1:3 ~ 6 take dimethicone, dimethyl silicone polymer mixing to get defoaming agent in mass ratio.
Reagent A: 1:4 ~ 7 take acryloyl chloride, methylene chloride mixing to get reagent A in mass ratio.
Reagent B: 2 ~ 5:17 in mass ratio take the copper-bath of concentration 0.1mol/L, mass fraction be 12% bicarbonate
Sodium solution mixes to get reagent B.
Crosslinking agent: 1:2 ~ 4 take 2,4,6- trimethylbenzoy-dipheny phosphine oxide, 1- hydroxy-cyclohexyl in mass ratio
Phenyl ketone mixes to get crosslinking agent.
Emulsify waterproof action material: 3 ~ 7:1:5:3 in mass ratio takes cetyl trimethylammonium bromide, Tween-80, positive fourth
Alcohol, normal octane mixing shake 2 ~ 4h in 46 ~ 56 DEG C with 200 ~ 250r/min, cooled to room temperature is made to get emulsification waterproof
Materials.
Pretreatment diatomite: 3:1 ~ 2:12:30 ~ 50 take calcium chloride, sodium chloride, diatomite, water mixing in mass ratio, with
400 ~ 700r/min, 35 ~ 60min of magnetic agitation, filtering take filter residue in 3 ~ 5h of oven drying to get pretreatment diatomite.
Auxiliary material: 1:2 ~ 5:1 in mass ratio takes castor oil, sodium citrate, paraffin mixing to get auxiliary material.
The preparation method of the closely knit base-material of composite hydrophobic, includes the following steps:
(1) 1:14 ~ 20:5 in mass ratio takes diatomite, water, acrylamide mixing, ultrasonic oscillation instrument is moved to, with 50 ~ 65kHz
Frequency ultrasound handles 20 ~ 40min, obtains dispersion liquid, in 35 ~ 50 DEG C, dispersion liquid 30 ~ 50:2:3 in mass ratio ~ 8:5 is taken to be added 12
Alkyl dimethyl betaine, octadecyl acrylate, the mixing of 2- acrylamide agent -2- methyl propane sulfonic acid, by nitrogen protection,
The ammonium persulfate mixing of dispersion liquid quality 1 ~ 4% is added, in 55 ~ 70 DEG C of 20 ~ 45min of isothermal holding, obtains polymer；
(2) dichloroethanes mixing is added in taking polyethylene glycol 1:4 in mass ratio ~ 7, and 4 ~ 8 times of polyethylene glycol quality of triethylamine is added
Mixing, with 400 ~ 700r/min, 35 ~ 55min of magnetic agitation, obtains mixed liquid, takes mixed liquid in ice-water bath, mixed 3 ~ 6 times of liquid quality is added
Reagent A mixing 20 ~ for 24 hours, filtering takes filtrate that the ether mixing of filtrate quality 40 ~ 60% is added, filters, and collection filter residue is in 60
~ 75 DEG C of 25 ~ 45min of oven drying, obtain reaction material, take reaction material 2 ~ 5:1:0.1:18 in mass ratio ~ 25 that N, N- dimethyl is added
Acrylamide, crosslinking agent, dimethyl sulfoxide mixing are moved in transparent mould and are used after stirring 35 ~ 60min with 500 ~ 800r/min
Wavelength be 220-230nm purple light 35 ~ 50min of light irradiation, discharging, move in the container for fill deionized water impregnate 20 ~ for 24 hours,
Filtering takes filter cake to handle 4 ~ 8h in -25 ~ -15 DEG C of freeze driers to get the closely knit base-material of composite hydrophobic.
The preparation of compound control water material: according to the mass fraction, 8 ~ 15 parts of sodium humates, 2 ~ 5 parts of sodium bentonites, 15 ~ 25 are taken
Part stearic amide, 0.2 ~ 0.5 part of titanium dioxide, 1 ~ 4 part of auxiliary material, 12 ~ 20 parts of reagent B, 70 ~ 90 DEG C of first water-bath take stearic acid
Amide, titanium dioxide mixing are cooled to 50 ~ 65 DEG C with 400 ~ 700r/min, 30 ~ 55min of magnetic agitation, and Na-bentonite is added
Soil, auxiliary material, reagent B mixing shear 15 ~ 25min of dispersion with 2000 ~ 4000r/min, obtain shearing disperse materials, take shearing disperse materials
After 40 ~ 60min of vacuumize process, concentrate is obtained, after taking concentrate to wash 2 ~ 4 times with dehydrated alcohol, it is dry to move to 60 ~ 80 DEG C of baking ovens
Dry 3 ~ 6h, obtains dried object, takes dried object 16 ~ 25:3 in mass ratio ~ 6 that emulsification waterproof action material mixing is added to get compound control water
Material.
A kind of concrete waterproof compacting agent, according to the mass fraction, including following component: 2 ~ 5 parts of volcanic ash, 1 ~ 4 part of silicic acid
Calcium, 0.3 ~ 0.7 part of ferric trichloride, 2 ~ 5 parts of glycerol, 1 ~ 4 part of defoaming agent, the closely knit base-material of 30 ~ 50 parts of composite hydrophobics, 15 ~ 25 parts it is multiple
Close control water material.
Defoaming agent: 1:3 in mass ratio takes dimethicone, dimethyl silicone polymer mixing to get defoaming agent.
Reagent A: 1:4 in mass ratio takes acryloyl chloride, methylene chloride mixing to get reagent A.
Reagent B: 2:17 in mass ratio take the copper-bath of concentration 0.1mol/L, mass fraction be 12% sodium bicarbonate
Solution mixes to get reagent B.
Crosslinking agent: 1:2 in mass ratio takes 2,4,6- trimethylbenzoy-dipheny phosphine oxide, 1- hydroxy-cyclohexyl benzene
Base ketone mixes to get crosslinking agent.
Emulsification waterproof action material: 3:1:5:3 in mass ratio take cetyl trimethylammonium bromide, Tween-80, n-butanol,
Normal octane mixing shakes 2h in 46 DEG C with 200r/min, cooled to room temperature is to get emulsification waterproof action material.
Pretreatment diatomite: 3:1:12:30 in mass ratio takes calcium chloride, sodium chloride, diatomite, water mixing, with 400r/
Min magnetic agitation 35min, filtering take filter residue in oven drying 3h to get pretreatment diatomite.
Auxiliary material: 1:2:1 in mass ratio takes castor oil, sodium citrate, paraffin mixing to get auxiliary material.
The preparation method of the closely knit base-material of composite hydrophobic, includes the following steps:
(1) 1:14:5 in mass ratio takes diatomite, water, acrylamide mixing, moves to ultrasonic oscillation instrument, super with 50kHz frequency
Sonication 20min, obtains dispersion liquid, in 35 DEG C, take dispersion liquid 30:2:3:5 in mass ratio be added dodecyldimethylammonium hydroxide inner salt,
Dispersion liquid quality 1% is added by nitrogen protection in octadecyl acrylate, the mixing of 2- acrylamide agent -2- methyl propane sulfonic acid
Ammonium persulfate mixing, in 55 DEG C of isothermal holding 20min, obtain polymer；
(2) dichloroethanes mixing is added in taking polyethylene glycol 1:4 in mass ratio, and 4 times of polyethylene glycol quality of triethylamine mixing is added,
With 400r/min magnetic agitation 35min, mixed liquid is obtained, takes mixed liquid in ice-water bath, the reagent A that mixed 3 times of liquid quality is added is mixed
20h, filtering take filtrate that the ether mixing of filtrate quality 40% is added, filter, collect filter residue in 60 DEG C of oven drying 25min, obtain
Reaction material takes reaction material 2:1:0.1:18 in mass ratio that N,N-DMAA, crosslinking agent, dimethyl sulfoxide is added mixed
It closes, after stirring 35min with 500r/min, moves to the purple light light irradiation 35min for being 220nm with wavelength in transparent mould, discharge, move
20h is impregnated into the container for fill deionized water, is filtered, and takes filter cake in -25 DEG C of freeze drier processing 4h to get composite hydrophobic
Closely knit base-material.
The preparation of compound control water material: according to the mass fraction, 8 parts of sodium humates, 2 parts of sodium bentonites, 15 parts of stearic acid are taken
Amide, 0.2 part of titanium dioxide, 1 part of auxiliary material, 12 parts of reagent B, 70 DEG C of first water-bath take stearic amide, titanium dioxide mixing, with
400r/min magnetic agitation 30min is cooled to 50 DEG C, and sodium bentonite, auxiliary material, reagent B mixing is added, is cut with 2000r/min
Cutting dissipates 15min, obtains shearing disperse materials, after taking shearing disperse materials vacuumize process 40min, obtains concentrate, takes concentrate nothing
After water-ethanol washs 2 times, 60 DEG C of oven drying 3h are moved to, dried object is obtained, takes dried object 16:3 in mass ratio that emulsification waterproof is added
Make materials mixing to get compound control water material.
A kind of concrete waterproof compacting agent, according to the mass fraction, including following component: 2 parts of volcanic ash, 1 part of calcium silicates,
0.3 part of ferric trichloride, 2 parts of glycerol, 1 part of defoaming agent, the closely knit base-material of 30 parts of composite hydrophobics, 15 parts of compound control water material.
Defoaming agent: 1:5 in mass ratio takes dimethicone, dimethyl silicone polymer mixing to get defoaming agent.
Reagent A: 1:6 in mass ratio takes acryloyl chloride, methylene chloride mixing to get reagent A.
Reagent B: 4:17 in mass ratio take the copper-bath of concentration 0.1mol/L, mass fraction be 12% sodium bicarbonate
Solution mixes to get reagent B.
Crosslinking agent: 1:3 in mass ratio takes 2,4,6- trimethylbenzoy-dipheny phosphine oxide, 1- hydroxy-cyclohexyl benzene
Base ketone mixes to get crosslinking agent.
Emulsification waterproof action material: 5:1:5:3 in mass ratio take cetyl trimethylammonium bromide, Tween-80, n-butanol,
Normal octane mixing shakes 3h in 51 DEG C with 225r/min, cooled to room temperature is to get emulsification waterproof action material.
Pretreatment diatomite: 3:1.5:12:40 in mass ratio takes calcium chloride, sodium chloride, diatomite, water mixing, with 550r/
Min magnetic agitation 50min, filtering take filter residue in oven drying 4h to get pretreatment diatomite.
Auxiliary material: 1:3:1 in mass ratio takes castor oil, sodium citrate, paraffin mixing to get auxiliary material.
The preparation method of the closely knit base-material of composite hydrophobic, includes the following steps:
(1) 1:17:5 in mass ratio takes diatomite, water, acrylamide mixing, moves to ultrasonic oscillation instrument, super with 57kHz frequency
Sonication 30min, obtains dispersion liquid, in 42 DEG C, take dispersion liquid 40:2:5:5 in mass ratio be added dodecyldimethylammonium hydroxide inner salt,
Dispersion liquid quality 3% is added by nitrogen protection in octadecyl acrylate, the mixing of 2- acrylamide agent -2- methyl propane sulfonic acid
Ammonium persulfate mixing, in 63 DEG C of isothermal holding 30min, obtain polymer；
(2) dichloroethanes mixing is added in taking polyethylene glycol 1:5 in mass ratio, and 6 times of polyethylene glycol quality of triethylamine mixing is added,
With 550r/min magnetic agitation 45min, mixed liquid is obtained, takes mixed liquid in ice-water bath, the reagent A that mixed 5 times of liquid quality is added is mixed
22h, filtering take filtrate that the ether mixing of filtrate quality 50% is added, filter, collect filter residue in 70 DEG C of oven drying 35min, obtain
Reaction material takes reaction material 4:1:0.1:21 in mass ratio that N,N-DMAA, crosslinking agent, dimethyl sulfoxide is added mixed
It closes, after stirring 50min with 650r/min, moves to the purple light light irradiation 43min for being 225nm with wavelength in transparent mould, discharge, move
22h is impregnated into the container for fill deionized water, is filtered, and takes filter cake in -20 DEG C of freeze drier processing 6h to get composite hydrophobic
Closely knit base-material.
The preparation of compound control water material: according to the mass fraction, 11 parts of sodium humates, 3 parts of sodium bentonites, 20 parts of stearic acid are taken
Amide, 0.4 part of titanium dioxide, 2 parts of auxiliary materials, 16 parts of reagent B, 80 DEG C of first water-bath take stearic amide, titanium dioxide mixing, with
550r/min magnetic agitation 40min is cooled to 60 DEG C, and sodium bentonite, auxiliary material, reagent B mixing is added, is cut with 3000r/min
Cutting dissipates 20min, obtains shearing disperse materials, after taking shearing disperse materials vacuumize process 50min, obtains concentrate, takes concentrate nothing
After water-ethanol washs 3 times, 70 DEG C of oven drying 5h are moved to, dried object is obtained, takes dried object 20:5 in mass ratio that emulsification waterproof is added
Make materials mixing to get compound control water material.
A kind of concrete waterproof compacting agent, according to the mass fraction, including following component: 3 parts of volcanic ash, 2 parts of calcium silicates,
0.5 part of ferric trichloride, 4 parts of glycerol, 3 parts of defoaming agents, the closely knit base-material of 40 parts of composite hydrophobics, 20 parts of compound control water material.
Defoaming agent: 1:6 in mass ratio takes dimethicone, dimethyl silicone polymer mixing to get defoaming agent.
Reagent A: 1:7 in mass ratio takes acryloyl chloride, methylene chloride mixing to get reagent A.
Reagent B: 5:17 in mass ratio take the copper-bath of concentration 0.1mol/L, mass fraction be 12% sodium bicarbonate
Solution mixes to get reagent B.
Crosslinking agent: 1:4 in mass ratio takes 2,4,6- trimethylbenzoy-dipheny phosphine oxide, 1- hydroxy-cyclohexyl benzene
Base ketone mixes to get crosslinking agent.
Emulsification waterproof action material: 7:1:5:3 in mass ratio take cetyl trimethylammonium bromide, Tween-80, n-butanol,
Normal octane mixing shakes 4h in 56 DEG C with 250r/min, cooled to room temperature is to get emulsification waterproof action material.
Pretreatment diatomite: 3:2:12:50 in mass ratio takes calcium chloride, sodium chloride, diatomite, water mixing, with 700r/
Min magnetic agitation 60min, filtering take filter residue in oven drying 5h to get pretreatment diatomite.
Auxiliary material: 1:5:1 in mass ratio takes castor oil, sodium citrate, paraffin mixing to get auxiliary material.
The preparation method of the closely knit base-material of composite hydrophobic, includes the following steps:
(1) 1:20:5 in mass ratio takes diatomite, water, acrylamide mixing, moves to ultrasonic oscillation instrument, super with 65kHz frequency
Sonication 40min, obtains dispersion liquid, in 50 DEG C, take dispersion liquid 50:2:8:5 in mass ratio be added dodecyldimethylammonium hydroxide inner salt,
Dispersion liquid quality 4% is added by nitrogen protection in octadecyl acrylate, the mixing of 2- acrylamide agent -2- methyl propane sulfonic acid
Ammonium persulfate mixing, in 70 DEG C of isothermal holding 45min, obtain polymer；
(2) dichloroethanes mixing is added in taking polyethylene glycol 1:7 in mass ratio, and 8 times of polyethylene glycol quality of triethylamine mixing is added,
With 700r/min magnetic agitation 55min, mixed liquid is obtained, takes mixed liquid in ice-water bath, the reagent A that mixed 6 times of liquid quality is added is mixed
For 24 hours, it filters, takes filtrate that the ether mixing of filtrate quality 60% is added, filter, collect filter residue in 75 DEG C of oven drying 45min, obtain
Reaction material takes reaction material 5:1:0.1:25 in mass ratio that N,N-DMAA, crosslinking agent, dimethyl sulfoxide is added mixed
It closes, after stirring 60min with 800r/min, moves to the purple light light irradiation 50min for being 230nm with wavelength in transparent mould, discharge, move
It is impregnated into the container for fill deionized water for 24 hours, filtering, takes filter cake in -15 DEG C of freeze drier processing 8h to get composite hydrophobic
Closely knit base-material.
The preparation of compound control water material: according to the mass fraction, 15 parts of sodium humates, 5 parts of sodium bentonites, 25 parts of stearic acid are taken
Amide, 0.5 part of titanium dioxide, 4 parts of auxiliary materials, 20 parts of reagent B, 90 DEG C of first water-bath take stearic amide, titanium dioxide mixing, with
700r/min magnetic agitation 55min is cooled to 65 DEG C, and sodium bentonite, auxiliary material, reagent B mixing is added, is cut with 4000r/min
Cutting dissipates 25min, obtains shearing disperse materials, after taking shearing disperse materials vacuumize process 60min, obtains concentrate, takes concentrate nothing
After water-ethanol washs 4 times, 80 DEG C of oven drying 6h are moved to, dried object is obtained, takes dried object 25:6 in mass ratio that emulsification waterproof is added
Make materials mixing to get compound control water material.
A kind of concrete waterproof compacting agent, according to the mass fraction, including following component: 5 parts of volcanic ash, 4 parts of calcium silicates,
0.7 part of ferric trichloride, 5 parts of glycerol, 4 parts of defoaming agents, the closely knit base-material of 50 parts of composite hydrophobics, 25 parts of compound control water material.
Comparative example 1: it is essentially identical with the preparation method of embodiment 1, it has only the difference is that lacking the closely knit base-material of composite hydrophobic.
Comparative example 2: it is essentially identical with the preparation method of embodiment 1, it has only the difference is that lacking compound control water material.
Comparative example 3: the concrete waterproof compacting agent of company, Hefei City production.
Embodiment is tested with concrete waterproof compacting agent obtained by comparative example according to JC 474-2008, test result
It is as shown in table 1:
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Bleeding rate/% | 35 | 40 | 40 | 45 | 50 | 55 |
| Water absorption (48h)/% | 50 | 52 | 54 | 60 | 62 | 75 |
| Shrinking percentage (28d)/% | 113 | 115 | 118 | 119 | 125 | 135 |
| Crack situation | Do not occur cracking phenomena | Do not occur cracking phenomena | Do not occur cracking phenomena | Slight cracking | Slight cracking | It cracks more serious |
In summary, the resulting concrete waterproof compacting agent waterproof effect of the present invention is preferable, and does not occur cracking phenomena, compares
In commercial product, effect is more preferable, is worth promoting.
The foregoing is merely preferred modes of the invention, are not intended to limit the invention, all in spirit and original of the invention
Within then, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of concrete waterproof compacting agent, according to the mass fraction, including following component: 2 ~ 5 parts of volcanic ash, 1 ~ 4 part of calcium silicates,
0.3 ~ 0.7 part of ferric trichloride, 2 ~ 5 parts of glycerol, 1 ~ 4 part of defoaming agent, which is characterized in that further include: 30 ~ 50 parts of composite hydrophobics are closely knit
Base-material, 15 ~ 25 parts of compound control water material.
2. a kind of concrete waterproof compacting agent according to claim 1, which is characterized in that the closely knit base-material of composite hydrophobic
Preparation method includes the following steps:
(1) 1:14 ~ 20:5 in mass ratio takes pretreatment diatomite, water, acrylamide mixing ultrasonic treatment, obtains dispersion liquid, in 35 ~
50 DEG C, take dispersion liquid 30 ~ 50:2:3 in mass ratio ~ 8:5 be added dodecyldimethylammonium hydroxide inner salt, octadecyl acrylate,
The ammonium persulfate mixing of dispersion liquid quality 1 ~ 4% is added by nitrogen protection in the mixing of 2- acrylamide agent -2- methyl propane sulfonic acid,
In 55 ~ 70 DEG C of isothermal holdings, polymer is obtained；
(2) dichloroethanes mixing is added in taking polyethylene glycol 1:4 in mass ratio ~ 7, and 4 ~ 8 times of polyethylene glycol quality of triethylamine is added
It is mixed, obtains mixed liquid, the reagent A for taking mixed liquid that mixed 3 ~ 6 times of liquid quality is added is mixed, and filtering takes filtrate that filtrate matter is added
The ether mixing of amount 40 ~ 60%, filters, collects filter residue and drying, obtain reaction material, take reaction material 2 ~ 5:1:0.1:18 ~ 25 in mass ratio
N,N-DMAA, crosslinking agent, dimethyl sulfoxide is added to be mixed, purple light light irradiation, discharging, water logging, filtering takes
Filter cake is freeze-dried to get the closely knit base-material of composite hydrophobic.
3. a kind of concrete waterproof compacting agent according to claim 2, which is characterized in that the pretreatment in the step (1)
Diatomite: 3:1 ~ 2:12:30 ~ 50 take calcium chloride, sodium chloride, diatomite, water to be mixed in mass ratio, filtering, take filter residue dry
It is dry to get pretreatment diatomite.
4. a kind of concrete waterproof compacting agent according to claim 2, which is characterized in that the reagent A in the step (2):
1:4 ~ 7 take acryloyl chloride, methylene chloride mixing to get reagent A in mass ratio.
5. a kind of concrete waterproof compacting agent according to claim 2, which is characterized in that the crosslinking agent in the step (2):
1:2 ~ 4 take 2,4,6- trimethylbenzoy-dipheny phosphine oxides, the mixing of 1- hydroxycyclohexyl phenyl ketone in mass ratio, i.e.,
Obtain crosslinking agent.
6. a kind of concrete waterproof compacting agent according to claim 1, which is characterized in that the preparation of the compound control water material:
According to the mass fraction, 8 ~ 15 parts of sodium humates, 2 ~ 5 parts of sodium bentonites, 15 ~ 25 parts of stearic amides, 0.2 ~ 0.5 part of dioxy are taken
Change titanium, 1 ~ 4 part of auxiliary material, 12 ~ 20 parts of reagent B, first 70 ~ 90 DEG C, stearic amide, titanium dioxide is taken to be mixed, it is cooled to 50 ~
65 DEG C, sodium bentonite, auxiliary material, reagent B mixing is added, shearing dispersion obtains shearing disperse materials, and shearing disperse materials is taken to vacuumize place
Reason, obtains concentrate, concentrate is taken to be washed with dehydrated alcohol, dry, obtains dried object, and dried object 16 ~ 25:3 ~ 6 in mass ratio is taken to add
Enter to emulsify the mixing of waterproof action material to get compound control water material.
7. a kind of concrete waterproof compacting agent according to claim 6, which is characterized in that the auxiliary material: 1:2 in mass ratio ~
5:1 takes castor oil, sodium citrate, paraffin mixing to get auxiliary material.
8. a kind of concrete waterproof compacting agent according to claim 6, which is characterized in that the reagent B: in mass ratio 2 ~ 5:
17 take copper-bath, sodium bicarbonate solution mixing to get reagent B.
9. a kind of concrete waterproof compacting agent according to claim 6, which is characterized in that the emulsification waterproof action material: press
3 ~ 7:1:5:3 of mass ratio takes cetyl trimethylammonium bromide, Tween-80, n-butanol, normal octane mixing, shakes in 46 ~ 56 DEG C
It swings, it is cooling to get emulsification waterproof action material.
10. a kind of concrete waterproof compacting agent according to claim 1, which is characterized in that the defoaming agent: in mass ratio 1:
3 ~ 6 take dimethicone, dimethyl silicone polymer mixing to get defoaming agent.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111333365A (en) * | 2020-03-26 | 2020-06-26 | 董卫兵 | Porous concrete waterproof agent and preparation method thereof |
| EP3932885A1 (en) | 2020-07-03 | 2022-01-05 | Sika Technology Ag | Free-flowing powder comprising a porous substrate functionalized with at least one accelerator |
| CN115159892A (en) * | 2022-06-22 | 2022-10-11 | 桂林理工大学 | Liquid concrete waterproofing agent and preparation method thereof |
| CN116023061A (en) * | 2022-12-29 | 2023-04-28 | 浙江大学 | Concrete polyaniline-basic copper carbonate compound additive, preparation method and application |
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2019
- 2019-03-27 CN CN201910235988.2A patent/CN110104988A/en not_active Withdrawn
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111333365A (en) * | 2020-03-26 | 2020-06-26 | 董卫兵 | Porous concrete waterproof agent and preparation method thereof |
| CN111333365B (en) * | 2020-03-26 | 2021-06-11 | 佛山市志必合材料有限公司 | Porous concrete waterproof agent and preparation method thereof |
| EP3932885A1 (en) | 2020-07-03 | 2022-01-05 | Sika Technology Ag | Free-flowing powder comprising a porous substrate functionalized with at least one accelerator |
| WO2022002877A1 (en) | 2020-07-03 | 2022-01-06 | Sika Technology Ag | Free-flowing powder comprising a porous substrate functionalized with at least one accelerator |
| CN115159892A (en) * | 2022-06-22 | 2022-10-11 | 桂林理工大学 | Liquid concrete waterproofing agent and preparation method thereof |
| CN116023061A (en) * | 2022-12-29 | 2023-04-28 | 浙江大学 | Concrete polyaniline-basic copper carbonate compound additive, preparation method and application |
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Application publication date: 20190809 |