CN110065278A - A kind of concrete product of normal temperature cure and its preparation method and application - Google Patents

A kind of concrete product of normal temperature cure and its preparation method and application Download PDF

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Publication number
CN110065278A
CN110065278A CN201910423754.0A CN201910423754A CN110065278A CN 110065278 A CN110065278 A CN 110065278A CN 201910423754 A CN201910423754 A CN 201910423754A CN 110065278 A CN110065278 A CN 110065278A
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Prior art keywords
concrete
parts
screed
normal temperature
product
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CN201910423754.0A
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Chinese (zh)
Inventor
李锋
孔文艺
范晓玲
黄祥
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Chengdu Construction Technology Co Ltd
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Chengdu Construction Technology Co Ltd
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Priority to CN201910423754.0A priority Critical patent/CN110065278A/en
Publication of CN110065278A publication Critical patent/CN110065278A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B13/00Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5001Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with carbon or carbonisable materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/60After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
    • C04B41/61Coating or impregnation
    • C04B41/65Coating or impregnation with inorganic materials
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40Additives
    • C09D7/60Additives non-macromolecular
    • C09D7/61Additives non-macromolecular inorganic
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00612Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/2023Resistance against alkali-aggregate reaction

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Aftertreatments Of Artificial And Natural Stones (AREA)

Abstract

The present invention relates to concrete products of a kind of normal temperature cure and its preparation method and application; belong to concrete material technical field; the concrete product of its normal temperature cure includes substrate concrete and surface layer; the surface layer includes screed and protective layer, and the screed is between substrate concrete and protective layer;The substrate concrete is cement concrete, and the screed is cement mortar, and the protective layer is FEVE fluorocarbon coating.The present invention has the effect of that anti-pollution is easy to clean, never the accumulation of salt in the surface soil, concrete product stable structure, protective action are permanent.

Description

A kind of concrete product of normal temperature cure and its preparation method and application
Technical field
The present invention relates to concrete material technical fields, more specifically, it relates to a kind of concrete system of normal temperature cure Product and its preparation method and application.
Background technique
Concrete refers to the general designation of the cementing integral engineered composite material of aggregate, more common coagulation by cementitious material Soil is to make cementitious material with cement, sand, masonry aggregate, matches by a certain percentage with water and merges cement concrete prepared by stirring, It is widely used in civil engineering.Concrete material can both be prepared at the construction field (site), be used, and be may be made as prefabrication and transported construction Scene is laid with or installation.Currently, preparing cement concrete and its prefabrication, there are mainly two types of modes: a kind of use is mechanically pressed into Type, surface soundness is poor, and a kind of to use moulding by casting, surface is finer and close compared with the concrete product of compression moulding, but two kinds There is more pore in concrete and its product surface prepared by mode, pollutant is easily penetrated into and is not easily cleaned completely, most Its appearance is influenced eventually.And cement concrete product wears no resistance, the easily erosion of being corroded property substance, the easy accumulation of salt in the surface soil, prepares coagulating cement The part raw material of soil are dissolved in water in mixing process, along with the evaporation of product surface moisture, the material of these dissolutions Material is also precipitated on surface or produces white deposits with the effects of carbon dioxide in air.Therefore, to maintain its good outer It sees with regard to needing often to carry out cleaning and maintenance to cement concrete, is difficult to the case where restoring appearance after preventing pollutant from penetrating into.
In the prior art, the Chinese patent that notification number is CN105565695B discloses a kind of concrete corrosion inhibitor and corrosion protection Concrete, corrosion inhibitor include powder and barium sulphide, and corrosion protection concrete is that incorporation corrosion inhibitor is prepared in cement concrete.It adds The cement concrete of corrosion inhibitor weakens damage of the expansion of calcium hydroxide crystallization to concrete, increases the strong of concrete Degree and consistency, improve impermeability.But the limitation of the anti-permeability performance is larger, the activation barium for needing to make to mix in concrete from The sub barite that inert stable is first generated in conjunction with the sulfate ion that the concrete external world is penetrated into, it is anti-could preferably to play it It seeps, anticorrosive effect, not can solve the easily contaminated object of cement concrete and its prefabrication accumulation of salt in the surface soil and the pore on its surface and do The problems such as dirty.
Summary of the invention
The purpose of the present invention is to provide a kind of concrete product of normal temperature cure, have anti-pollution it is easy to clean, never the accumulation of salt in the surface soil, The permanent advantage of concrete product stable structure, protective action.
Second object of the present invention is to provide a kind of preparation method of the concrete product of normal temperature cure have environment The advantages of temperature requirement is low, method is simple to operation, and concrete product protective performance obtained is good, long service life.
Third object of the present invention is to provide a kind of purposes of the concrete product of normal temperature cure have waterproof corrosion resistant The advantages of erosion, long service life, workload convenient for cleaning, reducing manual cleaning.
Above-mentioned first purpose of the invention has the technical scheme that
A kind of concrete product of normal temperature cure, including substrate concrete and surface layer, the surface layer include screed and protective layer, The screed is between substrate concrete and protective layer.The substrate concrete is cement concrete, and the screed is Cement mortar, the protective layer are FEVE fluorocarbon coating.
By using above-mentioned technical proposal, due to the structure using base, screed and protective layer, screed is located at base Between concrete and protective layer, substrate concrete and screed have been all made of this cementitious material of cement, are conducive to improve the two Between bonding, connection function.It is coated with FEVE fluorocarbon coating in mortar layer surface, FEVE fluorocarbon coating is based on fluoropolymer Manufactured coating, the C-F key of high bond energy acts on its guard shield of C-C key in coating, make coating have excellent durability and Weatherability, lower surface free energy, excellent pollution resistance, salt fog resistance outstanding are coated on screed mixed to height Solidifying soil product has good protective effect.Meanwhile FEVE fluorocarbon coating be by fluoroolefins and alkyl vinyl ether or ester copolymerization and At fluoropolymer, fluoroolefins unit is alternately arranged with alkane alkene ether or alkane alkenyl esters in fluoropolymer, and fluoroolefins unit provides excellent Different weatherability, and have protective effect to alkane alkene ether or alkane alkenyl esters, alkane alkene ether or alkane alkenyl esters provide for fluoropolymer Soluble, adhesion and solid dispersibility, enable the fluoropolymer to be preferably attached on screed, are conducive to improve concrete The stability of product surface protective layer.Had by the concrete product that substrate concrete, screed and protective layer form good Pollution resistance and adhesive force, surface layer waterproof and anticorrosion are conducive to prevent the colour fading of the cement-based material accumulation of salt in the surface soil.
The present invention is further arranged to, and the FEVE fluorocarbon coating is the air-curing coatings containing fluorocarbon resin.
By using above-mentioned technical proposal, since FEVE fluorocarbon coating can solidify at normal temperature, without drying at high temperature Be roasted into film, when preparing concrete product, protective layer on concrete product both can in factory's coating, can also coating at the scene, And have can recoatability, can on screed repeatedly it is armor coated, be conducive to improve protective layer wearability, Jin Erti Protective action of the high protective layer to concrete product.
The present invention is further arranged to, and the substrate concrete is made of the raw material comprising following parts by weight: 5~8 parts Water, 24~28 parts of cement, 33~36 parts of microlith, 30~35 parts of Machine-made Sand and 0.1~0.5 part of concrete admixture; The microlith is the building stones of 5~10mm of partial size;The concrete admixture include 200~220 parts polycarboxylate water-reducer, 5~ 15 parts of citric acid, 20~25 parts of sodium gluconate, 0.5~1 part of triethanolamine, 2.5~5 parts of potassium sulfate and 741.6 ~787.2 parts of water.
By using above-mentioned technical proposal, citric acid and sodium gluconate in concrete admixture all have certain huge legendary turtle Cooperation is used, and sodium gluconate also has excellent deferred action, and potassium sulfate and triethanolamine have early strength function, with gluconic acid Sodium cooperation, is conducive to improve the deferred action and early strength to substrate concrete.
The present invention is further arranged to, and the screed is made of the raw material comprising following parts by weight: 14~18 parts of water, 20~30 parts of cement, 10~15 parts of slag, 6~8 parts of powdered whiting, 0~2 part of metakaolin;32~42 parts Machine-made Sand, 1~2 part of polyvinyl alcohol, 0.1~0.2 part of tartaric acid, 0.01~0.02 part of triisopropanolamine, 1~1.5 part Pure-acrylic emulsion, 1~1.5 part of latex powder and 0.3~0.5 part of mortar additive;The mortar additive include 180~ 200 parts of silane-modified polycarboxylate water-reducer, 50~80 parts of slump retaining agent, 1~1.5 part of sodium thiosulfate, 5~10 parts white Sugar, 15~35 parts of dextrin, 10~15 parts of sodium carbonate and 647.7~746.4 parts of water.
By using above-mentioned technical proposal, silane-modified polycarboxylate water-reducer can keep the slump of mortar substantially not Mixing water amount is reduced under the premise of change, there is peptizaiton to cement granules, is conducive to the mobility for improving mortar, slump retaining agent The loss speed of the mortar slump can be slowed down.Wherein, silane-modified polycarboxylate water-reducer is using organosilan to polycarboxylic acids Water-reducing agent is modified, to improve the water-reducing rate and Sulphate-resistant property of water-reducing agent.Slump retaining agent includes organic acid, phosphoric acid salt With protein-based three kinds, the slump retaining agent in mortar additive generallys use organic acid or phosphoric acid salt, such as sodium citrate, third Olefin(e) acid or calgon etc..
White sugar and dextrin all have the effect for preferably mortar being delayed to condense, and dextrin and cellulose ether have after being dissolved in water There is certain viscosity, is conducive to the Water-saving effect for improving mortar.Sodium carbonate belongs to electrolyte, may advantageously facilitate cement etc. in mortar The heat evolution velocity of cementitious material is conducive to improve mortar under the mating reaction of sodium thiosulfate, sodium carbonate, white sugar and dextrin Mobility, avoid the occurrence of the phenomenon that constituent part is sunk to the bottom.
In the screed of surface layer, polyvinyl alcohol has film forming, and has preferable stability after forming a film, and helps to mention The waterproof effect of high screed.Tartaric acid is soluble easily in water, is combined with and is conducive to improve in mortar between each component with pure-acrylic emulsion Mixed uniformity.Triisopropanolamine has the molecular structure of space multistory, has stronger dispersion performance, is conducive to improve sand The workability for starching material cooperates with polyvinyl alcohol, is conducive to the film-formation result of reinforced mortar layer.And pure-acrylic emulsion has preferably Permeability, wetability and stability may advantageously facilitate the mixed effect in screed between each component, improve the equal of mortar mixing Even property.Multiple components in screed cooperate, so that the good fluidity of mortar, the mixture formed after stirring has longer Up time, facilitate the uniformity that a variety of materials in screed are mixed and stirred, be also beneficial to improve screed and base's coagulation Adhesion strength between soil, screed and protective layer.
The present invention is further arranged to, and the FEVE fluorocarbon coating is by including that the raw material of following parts by weight is made: 65~80 The fluorocarbon resin, 10~25 parts of solvent, 5~8 parts of curing agent, 18~27 parts of pigment and 0.5~3 part of auxiliary agent of part;Institute The copolymer that fluorocarbon resin is fluoroolefins and alkyl vinyl ether or ester is stated, the solvent is ethyl acetate, dimethyl carbonate, third At least one of ketone or cyclohexanone, the auxiliary agent are at least two in defoaming agent, wetting dispersing agent or levelling agent.
By using above-mentioned technical proposal, the fluorocarbon resin being copolymerized by fluoroolefins with alkyl vinyl ether or ester is having It can be dissolved in solvent, have preferable dissolubility in esters, ketone and aromatic hydrocarbon equal solvent.Curing agent is a kind of increasing Into or control solidify the substance or mixture to harden, may advantageously facilitate fluorocarbon resin and solidify at normal temperature, make main component fluorine The protective layer of carbon resin can carry out coating in a variety of contexts.The curing agent used in fluorocarbon coating is usually isocyanates Class, such as hexamethylene diisocyanate or isophorone diisocyanate, with good guarantor's light, colour retention and excellent weather-proof Property, the weather resistance for being conducive to improve fluorocarbon coating is combined with fluorocarbon resin.The pigment added in fluorocarbon coating needs well Resistance to acid and alkali, resistance to photo-thermal and weather resistance, such as titanium dioxide, carbon black, chrome oxide green, cadmium red or chrome yellow pigment.Defoaming agent energy Surface tension is enough reduced, the dispersion of pigment in a solvent is promoted, eliminates coating in the gas for carrying, bringing into or generate in use process Bubble keeps the protective layer being coated on screed smooth, uniform, silicone antifoam can be used in fluorocarbon coating of the invention Agent.Wetting dispersing agent can be improved wetting and dispersing ability of the pigment in coating, with the covering for enhancing color intensity, improving pigment Power is conducive to inhibit floating phenomenon, and the wetting dispersing agent in fluorocarbon coating can be using controllable flocculant aid or solution flocculation Auxiliary agent, such as the wetting dispersing agent 163,2001,2050 of BYK series.Levelling agent can promote fluorocarbon coating in drying and forming-film A smooth, smooth, uniform film is formed in the process, is advantageously reduced coating surface tension, is improved its uniformity, be conducive to Film shrinkage cavity defect is avoided, common levelling agent includes organic silicon and esters of acrylic acid, the stream in fluorocarbon coating of the invention Flat agent can use organic silicon, as BYK series 330,306, esters of acrylic acid can also be used, such as BYK series 354,358 Deng.
The present invention is further arranged to, and the auxiliary agent includes 0.1~0.5 part of defoaming agent, 0.1~1 part of wetting and dispersing Agent and 0.1~1.5 part of levelling agent.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that a kind of concrete system of normal temperature cure The preparation method of product, comprising the following steps:
Step 1: weighing the raw material of screed according to mass fraction, be distributed into after the raw material of screed is mixed evenly it is framed, Surface layer screed with a thickness of 1~1.5cm.
Step 2: weighing the raw material of substrate concrete according to mass fraction, the raw material of substrate concrete is mixed equal After even, cloth is on the surface layer screed in step 1, is covered with framed, is press-formed after striking off its upper surface, obtains molded part.
Step 3: by molded part made from step 2 in the environment that temperature is 50~60 DEG C, air humidity is 80~90% 36~60h of lower maintenance, obtains semi-finished product.
Step 4: clearing up the semi-finished product mortar layer surface that step 3 obtains, and removes semi-finished product mortar layer surface Floating ash impurity, and semi-finished product drying to surface layer moisture content is lower than 6%, it is coated with to the mortar layer surface of the semi-finished product after cleaning FEVE fluorocarbon coating, the semi-finished product for being coated with protective layer are placed in 0~60 DEG C of environment, keep 18~for 24 hours to get concrete Product.
By using above-mentioned technical proposal, successively the raw material of screed and substrate concrete is mixed and stirred, is press-formed, right Under pressure, the moisture in lower layer's screed is penetrated into substrate concrete for substrate concrete and screed, is conducive to make base Layer concrete is more closely knit, and then is conducive to improve the intensity of concrete product.It is slow due to containing in the formula of substrate concrete Solidifying and Water-saving effect additive, the raw material of substrate concrete has the longer up time after mixing and stirring, that is, after being press-formed, Substrate concrete is not also completely dried up, solidifies.In this way when being coated with screed on substrate concrete, substrate concrete and mortar Between have preferable combination.Protective layer on screed can film-forming at normal temperature, advantageously reduce to half at The environmental condition requirement of coating protection layer, enables concrete product to be prepared in a variety of contexts, is conducive to construct on product Convenience.
The present invention is further arranged to, in the step 1 and step 2, to the load pressure of substrate concrete and screed Power is 780~820t.
The present invention is further arranged to, and the mode being coated in the step 4 is brushing, roller coating or spraying.
By using above-mentioned technical proposal, substrate concrete and screed are compacted under above-mentioned on-load pressure, are conducive to The internal structure of pressure excessive loss substrate concrete and screed is avoided, the too small reduction consolidation effect of pressure is also avoided.Protection There are many coating methods of layer, can select coating method according to production equipment or execution conditions.
To realize above-mentioned third purpose, the present invention provides the following technical scheme that a kind of concrete system of normal temperature cure The purposes of product, the normal temperature cure concrete product are used as toilet wall or ground, wash platform, kitchen countertop or the windowsill that floats.
Implement above-mentioned technical proposal, with excellent waterproof antifouling property concrete product, be particularly suitable for toilet, Wash platform, kitchen countertop and the windowsill that floats etc. easily touch the environment of water, dirt and corrosive substance, are conducive to keep these places It is clean, clean and tidy, be also easy to clean
In conclusion advantageous effects of the invention are as follows:
One, due to the present invention using base, screed and protective layer three-decker, be conducive to improve three-decker between two-by-two Adhesive bond strength improves adhesive force of the FEVE fluorocarbon coating in mortar layer surface, can obtain sound construction, waterproof anti-pollution The concrete product of normal temperature cure.
Two, method of the invention prepares substrate concrete and surface layer screed by using half wet process, is conducive to improve base Adhesive bond effect between layer concrete and screed, between screed and protective layer, and then be conducive to reinforce FEVE fluorine carbon Protective effect of the coating to concrete product.
Three, by substrate concrete and the pressurization of screed static pressure, improve substrate concrete and screed binding force and Compactness, as protective layer, protective layer can be realized at normal temperature to be consolidated coating FEVE fluorocarbon coating on the semi-finished product after maintenance Change, in this way when preparing concrete product, coating preparation process can be completed in factory, can also directly by semi-finished product transport to Construction site carries out coating, and coating mode is simply various, convenient for construction.Concrete product produced by the present invention has anti-pollution easily clear Clean, the never accumulation of salt in the surface soil, the bright-colored non-fading feature of beauty
Detailed description of the invention
Fig. 1 is the sectional view of pavement brick of the present invention.
In figure, 1, substrate concrete;2, screed;3, protective layer.
Specific embodiment
Technical solution of the present invention is described below in conjunction with drawings and examples.
The preparation example of FEVE fluorocarbon coating
Preparation example 1
The solvent of the wetting dispersing agent of the fluorocarbon resin of 3kg and 0.02kg, 1kg are mixed evenly, are then added 3.6kg's Pigment, dispersion are ground to fineness less than 25 microns after mixing evenly, obtain pigment slurry.By the fluorine carbon tree of pigment slurry and 10kg Rouge is mixed, and the defoaming agent of 0.02kg and the levelling agent of 0.02kg are added in whipping process, adds 1kg's after mixing evenly Solvent, mixed material after mixing evenly are spare;The above-mentioned mixing stirred evenly is being added using preceding in the curing agent for weighing 1kg In material, stir evenly.For the fluorocarbon resin that this preparation example uses for LF-200, wetting dispersing agent uses BYK-163, solvent Using dimethyl carbonate, pigment uses carbon black, and defoaming agent uses BYK-065, and levelling agent uses BYK-330, and curing agent uses TKA-75。
Preparation example 2
The solvent of the wetting dispersing agent of the fluorocarbon resin of 2kg and 0.1kg, 1kg are mixed evenly, are then added 2.7kg's Pigment, dispersion are ground to fineness less than 25 microns after mixing evenly, obtain pigment slurry.By the fluorine carbon tree of pigment slurry and 6kg Rouge is mixed, and the defoaming agent of 0.05kg and the levelling agent of 0.15kg are added in whipping process, adds 1.5kg after mixing evenly Solvent, mixed material after mixing evenly is spare;Above-mentioned stir evenly is being added using preceding in the curing agent that weighs 0.8kg In mixed material, stir evenly.For the fluorocarbon resin that this preparation example uses for GK-570, wetting dispersing agent uses BYK- 2001, solvent uses ethyl acetate, and pigment uses carbon black, and defoaming agent uses BYK-066N, and levelling agent uses BYK-358, solidification Agent uses N3300.
Preparation example 3
The solvent of the wetting dispersing agent of the fluorocarbon resin of 4kg and 0.06kg, 1.6kg are mixed evenly, 4.6kg is then added Pigment, dispersion be ground to fineness after mixing evenly less than 25 microns, obtain pigment slurry.By pigment slurry obtained and 11kg Fluorocarbon resin be mixed, the defoaming agent of 0.04kg and the levelling agent of 0.16kg are added in whipping process, after mixing evenly again The solvent of 2kg is added, mixed material after mixing evenly is spare;Above-mentioned stir is being added using preceding in the curing agent for weighing 1.2kg It mixes in uniform mixed material, stirs evenly.For CC-03, wetting dispersing agent uses the fluorocarbon resin that this preparation example uses BYK-2050, solvent use ethyl acetate, and pigment uses carbon black, and defoaming agent uses BYK-065, and levelling agent uses BYK-358, Gu Agent uses TSE-100.
Embodiment
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of concrete product of normal temperature cure, including substrate concrete 1 and surface layer, surface layer Including screed 2 and protective layer 3, wherein screed 2 is between substrate concrete 1 and protective layer 3.Substrate concrete 1 and sand The component formula of pulp layer 2 is as shown in Table 1 and Table 2, and protective layer 3 is using FEVE fluorocarbon coating made from preparation example 1.
The present embodiment also provides a kind of preparation method of the concrete product of normal temperature cure, includes the following steps:
Step 1: weighing the raw material of screed 2 according to the dosage formula of table 2, first by water and sodium thiosulfate, white sugar, dextrin, carbon After sour sodium mixed dissolution, silane-modified polycarboxylate water-reducer is added and slump retaining agent is mixed evenly, obtains sand after being sufficiently stirred Starch additive.Mortar additive is weighed according to the dosage formula of table 2, and by itself and other raw waters of screed, cement, mine Slag, powdered whiting, Machine-made Sand, polyvinyl alcohol, tartaric acid, triisopropanolamine, pure-acrylic emulsion and latex powder are mixed evenly, It is distributed into the framed interior of 600*900, coating thickness 1.5cm.
Step 2: weighing the raw material of substrate concrete 1 according to the dosage formula of table 1, first by water and citric acid, gluconic acid After sodium, potassium sulfate mixed dissolution, polycarboxylate water-reducer and triethanolamine is added, is uniformly mixed, obtains concrete after being sufficiently stirred Additive.Concrete admixture is weighed according to the dosage formula of table 1, and by other raw waters, the water of itself and substrate concrete 1 Mud, microlith and Machine-made Sand mixing, after mixing evenly, cloth is on the surface layer screed 2 in step 1, be covered with it is framed, and will be framed Upper surface strike off, static pressure extrusion forming, on-load pressure 780t.
Step 3: by molded part made from step 2 in the environment of temperature is 51 ± 1 DEG C, air humidity is 80 ± 1% 60h is conserved, semi-finished product are obtained.
Step 4: clearing up 2 surface of semi-finished product screed that step 3 obtains, cleaning semi-finished product mortar layer surface Floating ash impurity, stands 3d in the environment of placing it in humidity less than 65%, to 2 surface of screed of the semi-finished product after standing and drying FEVE fluorocarbon coating is sprayed, the semi-finished product for being coated with protective layer 3 are placed in the environment of higher temperatures (40 ± 3 DEG C), 18h is kept, Up to concrete product.
Embodiment 2
The present embodiment and the difference of embodiment 1 essentially consist in: the substrate concrete 1 and 2 material of screed of the present embodiment, which use, matches As shown in Table 1 and Table 2, protective layer 3 uses FEVE fluorocarbon coating made from preparation example 2, and surface layer screed 2 in step 1 for side With a thickness of 1cm, static pressure on-load pressure is 820t in step 2, the curing condition in step 3 is 59 ± 1 DEG C, air humidity 89 ± 1%, curing time 36h, the coating method of FEVE fluorocarbon coating is roller coating in step 4, after coating at low ambient temperatures (8 ± 3 DEG C) in keep for 24 hours to get.
Embodiment 3
The present embodiment and the difference of embodiment 1 essentially consist in: the substrate concrete 1 and 2 material of screed of the present embodiment, which use, matches As shown in Table 1 and Table 2, protective layer 3 uses FEVE fluorocarbon coating made from preparation example 3, and surface layer screed 2 in step 1 for side With a thickness of 1.3cm, static pressure on-load pressure is 800t in step 2, and the curing condition in step 3 is 55 ± 1 DEG C, air humidity 85 ± 1%, curing time 48h, the coating method of FEVE fluorocarbon coating is to brush in step 4, after coating under room temperature environment Keep in (25 ± 3 DEG C) 21h to get.
Embodiment 4-6
Embodiment 4-6 and the main distinction of embodiment 3 are: the substrate concrete 1 and 2 material of screed of its concrete product are adopted It is as shown in Table 1 and Table 2 with formula.
The component formula of substrate concrete 1 and concrete admixture in 1 embodiment 1-6 of table
For 42.5 grades of ordinary portland cement, sieve percent of pass of the microlith in 9.5mm is the cement used in table 1 100%, it is 0 in the percent of pass of 4.75mm sieve, other raw materials are ordinary commercial products.
The component formula of screed 2 and mortar additive in 2 embodiment 1-6 of table
For the cement used in table 2 for 42.5 grades of ordinary portland cement, silane-modified polycarboxylate water-reducer is Bath Husband water-reducing agent 2651F, slump retaining agent are the polycarboxylic acid slump retaining agent of the happy element of family's U.S., other raw materials are ordinary commercial products.
Comparative example
Comparative example 1
The difference of this comparative example and embodiment 3 essentially consists in: the concrete product of this comparative example does not include protective layer, i.e. surface layer sand The upper surface of pulp layer is not coated with FEVE fluorocarbon coating.
Comparative example 2
The difference of this comparative example and embodiment 3 essentially consists in: mortar layer formula that this comparative example uses is the water of 15kg, 50kg Cement, the slag of 25kg, the metakaolin of 2kg, the Machine-made Sand of 74kg, the polyvinyl alcohol of 3kg, the tartaric acid of 0.3kg, 0.03kg Triisopropanolamine, the pure-acrylic emulsion of 2.5kg, the latex powder of 2.5kg and 0.8kg mortar additive, this comparative example use Mortar additive is same as Example 3.The substrate concrete formula that this comparative example uses is the water of 13kg, the cement of 30kg, 9kg Slag, the microlith of 70kg, the Machine-made Sand of 78kg and 0.6kg concrete admixture, this comparative example use concrete it is additional Agent is same as Example 3.
Product testing
Basic performance tests: concrete product made from each embodiment and comparative example is observed, and according to " concrete road surface Brick " (GB/T 28635-2012) standard to compression strength, flexural strength and the wearability of each embodiment and comparative example product into Row detection, testing result are as shown in table 3.
Each embodiment and comparative example of table 3 prepares the testing result of product
Group Appearance Compression strength/MPa Flexural strength/MPa Wear resistance
Embodiment one Protective layer uniform in color is consistent 45.3 4.5 2.6
Embodiment two Protective layer uniform in color is consistent 43.6 4.7 2.7
Embodiment three Protective layer uniform in color is consistent 55.8 5.6 3.2
Example IV Protective layer uniform in color is consistent 51.4 5.2 3.1
Embodiment five Protective layer uniform in color is consistent 53.7 5.2 3.0
Embodiment six Protective layer uniform in color is consistent 48.2 4.9 2.8
Comparative example one Surface layer uniformity 54.1 5.5 1.7
Comparative example two Protective layer shade is different 43.5 4.5 2.2
Seen from table 3,3 wear resistance of protective layer of the concrete product of various embodiments of the present invention preparation is substantially better than comparison Example, it is seen that be conducive to improve the wear resistance on its surface in surface layer setting protective layer 3.Comparative example one is without the mixed of coat protective layer 3 Solidifying soil product, surface layer wear resistance is lower, easily occurs scratch in use, influences its aesthetics.Comparative example two uses dry method Concrete base layer 1 and screed 2 are prepared, the non-uniform problem of coating occurs in armor coated 3 product, mixed after coating Also more each embodiment is slightly poor for solidifying soil product wearability.
Antifouling property test: (mixed with protective layer to concrete product surface made from each embodiment and comparative example respectively Solidifying soil product surface refers in particular to its 3 surface of protective layer, refers in particular to 2 surface of screed without the concrete product surface of protective layer) it is added dropwise Oil droplet and ink will be added dropwise after having the concrete product of oil droplet or ink to stand 6h and 12h respectively, be rinsed with water concrete product The flushing effect on concrete product surface is observed on surface, and the results are shown in Table 4 for observation.
Each embodiment and comparative example of table 4 prepares the anti-pollution observation result of product
By table 4 as it can be seen that the concrete product of various embodiments of the present invention preparation has excellent antifouling property, ink or oil droplet exist After 3 6~12h of superficial residence of protective layer, remains to rinse well easily, remain concrete product surface without any trace.Comparison The concrete product of the uncoated protective layer of example one occurs penetrating into phenomenon, part ink or oil droplet after ink or oil droplet is added dropwise The surface layer for penetrating into concrete product leads to occur with shipwreck to clean up concrete product remained on surface ink or oil trace Phenomenon, and ink or oil droplet are longer in the time of concrete product superficial residence, trace residual is more obvious.Prepared by comparative example two Concrete product has preferable antifouling effect within the short period being added dropwise after ink or oil droplet, when ink or oil droplet are in coagulation After native product surface stay longer, it still will appear the residual of ink or greasy dirt, it was demonstrated that change concrete base layer 1 and surface layer Formula and preparation method, have larger impact to the combination situation of concrete product and sealer 3, easily lead to concrete product The antifouling property on surface declines.
Anti- accumulation of salt in the surface soil experiment: concrete product made from each embodiment and comparative example is placed in water, and keeps concrete product thick The 2/3 of degree is (surface layer of concrete product is located above base) submerged in water, and the concrete product of immersion is placed in outdoor and is put It sets 2 months, observes the accumulation of salt in the surface soil situation of concrete surface, the results are shown in Table 5 for observation.
The anti-accumulation of salt in the surface soil of each embodiment and comparative example of table 5 observes result
Group Observe result
Embodiment one Surfacing, protective layer are combined closely with surface layer, are not whitened, no accumulation of salt in the surface soil phenomenon
Embodiment two Surfacing, protective layer are combined closely with surface layer, are not whitened, no accumulation of salt in the surface soil phenomenon
Embodiment three Surfacing, protective layer are combined closely with surface layer, are not whitened, no accumulation of salt in the surface soil phenomenon
Example IV Surfacing, protective layer are combined closely with surface layer, are not whitened, no accumulation of salt in the surface soil phenomenon
Embodiment five Surfacing, protective layer are combined closely with surface layer, are not whitened, no accumulation of salt in the surface soil phenomenon
Embodiment six Surfacing, protective layer are combined closely with surface layer, are not whitened, no accumulation of salt in the surface soil phenomenon
Comparative example one Large area bloom is precipitated in surface
Comparative example two Surface portion whiting, protective film layer, which has, to fall off
As table 5 as it can be seen that concrete product made from various embodiments of the present invention has good alkali burnout resistance, steeped in water In be placed in outdoor placement two months still without any accumulation of salt in the surface soil phenomenon, be not in any influence concrete product quality and beauty Phenomenon is durable.The concrete product accumulation of salt in the surface soil made from comparative example one is serious, and large area bloom occurs in surface layer screed 2, Prove that its inner hydrolysis and hydroxide precipitation phenomenon are serious.Concrete product accumulation of salt in the surface soil phenomenon made from comparative example two is not tight Weight, but surface pore is more, and surface layer intensity is lower, is easier to falling off and fall off with surface layer mortar, it was demonstrated that it is after long-term use It still will appear accumulation of salt in the surface soil phenomenon, quality problems easily occur.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it It is interior.

Claims (10)

1. a kind of concrete product of normal temperature cure, which is characterized in that including substrate concrete (1) and surface layer, the surface layer packet Screed (2) and protective layer (3) are included, the screed (2) is located between substrate concrete (1) and protective layer (3);The base Concrete (1) is cement concrete, and the screed (2) is cement mortar, and the protective layer (3) is FEVE fluorocarbon coating.
2. a kind of concrete product of normal temperature cure according to claim 1, which is characterized in that the FEVE fluorocarbon coating For the air-curing coatings containing fluorocarbon resin.
3. a kind of concrete product of normal temperature cure according to claim 1, which is characterized in that the substrate concrete (1) it is made of the raw material comprising following parts by weight: 5~8 parts of water, 24~28 parts of cement, 33~36 parts of microlith, 30~35 The Machine-made Sand and 0.1~0.5 part of concrete admixture of part;The microlith is the building stones of 5~10mm of partial size;Outside the concrete Adding agent includes 200~220 parts of polycarboxylate water-reducer, 5~15 parts of citric acid, 20~25 parts of sodium gluconate, 0.5~1 The triethanolamine, 2.5~5 parts of potassium sulfate and 741.6~787.2 parts of water of part.
4. a kind of concrete product of normal temperature cure according to claim 1, which is characterized in that the screed (2) by Raw material comprising following parts by weight is made: 14~18 parts of water, 20~30 parts of cement, 10~15 parts of slag, 6~8 parts Powdered whiting, 0~2 part of metakaolin;32~42 parts of Machine-made Sand, 1~2 part of polyvinyl alcohol, 0.1~0.2 part of wine Stone acid, 0.01~0.02 part of triisopropanolamine, 1~1.5 part of pure-acrylic emulsion, 1~1.5 part of latex powder and 0.3~0.5 part Mortar additive;The mortar additive includes 180~200 parts of silane-modified polycarboxylate water-reducer, 50~80 parts of guarantor Collapse agent, 1~1.5 part of sodium thiosulfate, 5~10 parts of white sugar, 15~35 parts of dextrin, 10~15 parts of sodium carbonate and 647.7~746.4 parts of water.
5. a kind of concrete product of normal temperature cure according to claim 1, which is characterized in that the FEVE fluorocarbon coating By include following parts by weight raw material be made: 65~80 parts of fluorocarbon resin, 10~25 parts of solvent, 5~8 parts of curing agent, 18~27 parts of pigment and 0.3~3 part of auxiliary agent;The fluorocarbon resin is the copolymerization of fluoroolefins and alkyl vinyl ether or ester Object, the solvent are at least one of ethyl acetate, dimethyl carbonate, acetone or cyclohexanone, and the auxiliary agent is defoaming agent, profit At least two in hygroscopic water powder or levelling agent.
6. a kind of concrete product of normal temperature cure according to claim 5, which is characterized in that the auxiliary agent includes 0.1 ~0.5 part of defoaming agent, 0.1~1 part of wetting dispersing agent and 0.1~1.5 part of levelling agent.
7. a kind of preparation method of the concrete product of normal temperature cure as claimed in any of claims 1 to 6, special Sign is, comprising the following steps:
Step 1: weighing the raw material of screed (2) according to mass fraction, and rear cloth is mixed evenly in the raw material of screed (2) Enter it is framed, surface layer screed (2) with a thickness of 1~1.5cm;
Step 2: weighing the raw material of substrate concrete (1) according to mass fraction, and the raw material of substrate concrete (1) is mixed After uniformly, cloth is on the surface layer screed (2) in step 1, is covered with framed, is press-formed, is formed after striking off its upper surface Part;
Step 3: molded part made from step 2 is conserved in the environment of temperature is 50~60 DEG C, air humidity is 80~90% 36~60h obtains semi-finished product;
Step 4: clearing up semi-finished product screed (2) surface that step 3 obtains, and removes semi-finished product screed (2) surface Floating grey impurity, and be lower than 6% to surface layer moisture content for semi-finished product are dry, applied to screed (2) surface of the semi-finished product after cleaning Cloth FEVE fluorocarbon coating, the semi-finished product for being coated with protective layer (3) are placed in 0~60 DEG C of environment, keep 18~for 24 hours to get Concrete product.
8. a kind of preparation method of the concrete product of normal temperature cure according to claim 7, which is characterized in that the step Rapid one and step 2 in, be 780~820t to the on-load pressure of substrate concrete (1) and screed (2).
9. a kind of preparation method of the concrete product of normal temperature cure according to claim 7, which is characterized in that the step The mode being coated in rapid four is brushing, roller coating or spraying.
10. a kind of purposes of the concrete product of normal temperature cure, which is characterized in that the normal temperature cure concrete product, which is used as, to be defended Wall or ground, wash platform, kitchen countertop or the windowsill that floats between life.
CN201910423754.0A 2019-05-21 2019-05-21 A kind of concrete product of normal temperature cure and its preparation method and application Withdrawn CN110065278A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114105576A (en) * 2021-02-05 2022-03-01 四川永存建筑工程有限公司 Building material and preparation method and application thereof
CN114735982A (en) * 2022-05-05 2022-07-12 中国建筑材料科学研究总院有限公司 Anti-carbonization concrete and forming method and application thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114105576A (en) * 2021-02-05 2022-03-01 四川永存建筑工程有限公司 Building material and preparation method and application thereof
CN114735982A (en) * 2022-05-05 2022-07-12 中国建筑材料科学研究总院有限公司 Anti-carbonization concrete and forming method and application thereof
CN114735982B (en) * 2022-05-05 2023-09-05 中国建筑材料科学研究总院有限公司 Anti-carbonization concrete and forming method and application thereof

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