A kind of preparation method of the undisguised agent of prefabricated components concrete surface
阅读说明：本技术 一种预制构件用混凝土表面露骨剂的制备方法 (A kind of preparation method of the undisguised agent of prefabricated components concrete surface ) 是由 *** 陈传明 代义磊 胡成朔 田野 陈刚 于 2019-08-21 设计创作，主要内容包括：本发明公开了一种预制构件用混凝土表面露骨剂的制备方法,包括如下步骤(1)聚合物/层状硅酸盐复合胶体溶液的制备：在高速分散下,将层状硅酸盐粘土X1、水溶性高分子聚合物均匀分散于水中；(2)有机-无机复合缓凝液的制备：在高速分散下,向上述聚合物/层状硅酸盐复合胶体溶液中加入有机-无机复合缓凝剂组合物,分散至均相无沉淀；(3)露骨剂成型：在高速分散的作用下,依次向上述有机-无机复合缓凝液中加入功能性助剂、颜料、填料和缓释长效型防腐剂,混合分散均匀。本发明提供的一种预制构件用混凝土表面露骨剂,兼具生态环保、高效缓凝、持久稳定和易于立面施工等多重优点,以工业副产石膏作为主要缓凝成分,实现副产二次利用。(The invention discloses a kind of preparation methods of undisguised agent of prefabricated components concrete surface, include the following steps the preparation of (1) polymer/laminated silicate composite colloidal solution: under high speed dispersion, clay of laminar silicate X1, water soluble polymer being dispersed in water；(2) preparation of Organic-inorganic composite slow setting liquid: under high speed dispersion, Organic-inorganic composite set retarder composition is added in Xiang Shangshu polymer/laminated silicate composite colloidal solution, is dispersed to homogeneously without precipitating；(3) it undisguised agent molding: under the action of high speed dispersion, states upwards in turn and functional aid, pigment, filler is added in Organic-inorganic composite slow setting liquid and is sustained long-acting type preservative, mixing is uniformly dispersed.A kind of undisguised agent of prefabricated components concrete surface provided by the invention has both ecological, environmental protective, efficient slow setting, lasting stability and the multiple advantage such as be easy to elevation construction using industry by-product gypsum as main slow setting ingredient and realizes by-product secondary use.)
1. a kind of preparation method of the undisguised agent of prefabricated components concrete surface, which comprises the steps of:
(1) preparation of polymer/laminated silicate composite colloidal solution: under the action of high speed dispersion, phyllosilicate is glued Native X1, water soluble polymer are dispersed in water, obtain polymer/laminated silicate composite colloidal solution；
(2) preparation of Organic-inorganic composite slow setting liquid: under the action of high speed dispersion, Xiang Shangshu polymer/laminated silicate is multiple It closes and Organic-inorganic composite set retarder composition is added in colloidal solution, be dispersed to homogeneously without precipitating, it is slow to obtain Organic-inorganic composite Lime set；
(3) it undisguised agent molding: under the action of high speed dispersion, is stated in Organic-inorganic composite slow setting liquid upwards in turn and function is added Property auxiliary agent, pigment, filler and sustained release long-acting type preservative, mixing is uniformly dispersed, and obtains the undisguised agent of prefabricated components concrete surface.
2. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 1, which is characterized in that Described in step (1) and step (2) under the action of high speed dispersion, refer to that the mechanical stirring that on-line velocity is 5-30m/s is made With under carry out.
3. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 1, which is characterized in that Clay of laminar silicate X1 described in step (1) is a kind of 2:1 type clay of laminar silicate, particle diameter 1-200nm.
4. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 1, which is characterized in that Water soluble polymer described in step (1) is water-soluble high molecular polymer, semi-synthetic water soluble polymer is poly- Close object or synthesizing water-solubility high molecular polymer, number-average molecular weight 10,000-100 ten thousand.
5. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 1, which is characterized in that Mass ratio in step (1), between layered silicate clay X1, water soluble polymer and water are as follows: laminar silicic acid Salt clay X1: water soluble polymer: water=0.5-5:2-10:100.
6. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 1, which is characterized in that Organic-inorganic composite set retarder composition described in step (2) include inorganic slow setting component and organic slow setting group in two sub-sections, Mass ratio between the inorganic slow setting component and organic slow setting component are as follows: inorganic slow setting component: organic slow setting component=10- 1:1。
7. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 6, which is characterized in that The inorganic slow setting group is divided into industry by-product gypsum or industry by-product gypsum and phosphatic mixture, the industry by-product gypsum Including desulfurized gypsum and ardealite, the phosphate is sodium pyrophosphate, calgon, sodium tripolyphosphate, methylenediphosphonate One of, phosphatic additive amount is the 0-30% of industry by-product gypsum quality；It is slow that organic slow setting group is divided into alcohols Solidifying agent, carbohydrate retarder, retarder containing carboxyl, hydroxycarboxylate and aminocarboxylate organic type retarder, organic amine and spread out One of biological retarder.
8. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 1, which is characterized in that Functional aid described in step (3) includes following components: 0.2-0.5 parts of dispersing agent according to the mass fraction；Defoaming agent 0.2- 0.5 part；0.2-0.5 parts of substrate wetting agents；0.1-0.3 parts of flavouring agent.
9. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 1, which is characterized in that Pigment described in step (3) is at least one of anatase titanium dioxide or rutile type titanium white, iron oxide, and the pigment accounts for described The undisguised agent material gross mass 1-5% of concrete surface；The filler be the talcum powder that fineness is 600-2000 mesh, calcium carbonate, At least one of barium sulfate, the filler account for the undisguised agent material gross mass 5-10% of the concrete surface.
10. a kind of preparation method of undisguised agent of prefabricated components concrete surface according to claim 1, feature exist In slow release long-acting type antibacterial agent described in step (3) is cationic antibacterial agent and its intercalation modifying clay of laminar silicate X2 Aqueous dispersions, prepared by following methods:
The clay of laminar silicate X2 of 5-15 mass parts is added in conical flask, the water of 100 mass parts is added, uses supersonic oscillations Device shakes 30-90min；It again disperses the cationic antibacterial agent of 20-60 mass parts in the water of 100 mass parts, and is added to layer In the aqueous dispersions of shape silicate clay X2, continues to shake 4-8h, obtain slow release long-acting type antibacterial agent；
The additive amount of the slow release long-acting type antibacterial agent accounts for the 0.2-2% of the undisguised agent material gross mass of the concrete surface.
Technical field
The invention belongs to building engineering fields, are specifically related to a kind of preparation of undisguised agent of prefabricated components concrete surface Method.
Background technique
Concrete prefabricated element (PrecastConcrete, abbreviation PC component) is used as novel green construction material, extensive Applied to fields such as building, traffic, water conservancy, nuclear powers.Component is prefabricated in the factory, and then transports to construction site, pours after mixed Coagulate the mode assembly and connection of soil.To make to have good bonding, root between the concrete newly poured and precast concrete It is provided according to standard, the faying face of prefabricated components and rear pouring concrete, grouting material, seat pulp material has to setting rough surface.
Undisguised agent washing process is one of presently most common rough surface setting method, and the undisguised agent of concrete can delay one Concrete surface final setting time in depthkeeping degree, treated, and concrete only needs high-pressure washing that can form the coarse of aggregate exposure Basal plane.In the prior art, the research for the undisguised agent of concrete mostly lays particular emphasis on its undisguised property index, and its application property is ground Study carefully very few, the facade brushing characteristic of especially undisguised agent.
Such as Chinese patent CN201310173938.9, CN201410070589.2, CN201711110754.2, discloses Undisguised agent of several concrete for exposed-aggregate cement concrete and preparation method thereof, these technologies all have excellent dew Aggregate effect, but be only applied to Horizontal concrete road surface and constructed in a manner of spraying, do not have and is brushed in mold facade The ability used.
Chinese patent CN201811384001.5 discloses a kind of surface retarders for concrete prefabricated element, the skill Art has used cellulose thickener, and facade brushing characteristic is adjusted, but due to the presence of cellulose substances, material is being deposited By easy moldy metamorphism during storage.
Chinese patent CN201410718947.6 discloses a kind of concrete smear type surface delay retarder and its application Method using carbohydrate and metal carboxylate substance as main retarder, and has used preservative in system, but due to traditional anti-corrosion Agent has that the feature of environmental protection is poor with Durability of antimicrobial effect deficiency, fails the skill for clearly proposing that its long-term storage performance can be improved Art approach.
In addition, in the prior art, the retarder in order to obtain reliable slow setting and undisguised effect, in proportioning materials system Ingredient accounting generally all can be very high, but in actual use, and the retarder part for really playing deferred action is seldom, big portion Dividing is flushed away in water-washing process, and the waste of material and resource is caused.
Recent studies indicate that the main component calcium sulphate dihydrate in industry by-product gypsum can be fast instant after meeting water Solution, and the gel reaction generated with tricalcium aluminate aquation rapidly generates entringite, is wrapped in the surface of tricalcium aluminate mineral grain, Have the function of that water is isolated and delays cement concrete hydration reaction.This technology has been widely used in cement preparation skill at present In art, such as Chinese patent CN201810743549.8, CN201510877263.5, CN201510877263.5.
Summary of the invention
For the undisguised agent feature of environmental protection of existing prefabricated components concrete surface is poor, undisguised depth is bad, storage it is perishable with And the problems such as pendant is easily flowed when facade brushing, the present invention provides a kind of undisguised agent of prefabricated components concrete surface, have both ecology Environmentally friendly, efficient slow setting, lasting stability and the multiple advantage such as be easy to elevation construction.The present invention delays using industry by-product gypsum as main It congeals into point, while realizing the efficient slow setting in concrete component surface layer, has also expanded the comprehensive Utilization Ways of industry by-product gypsum, Enhance the circular economy and sustainable development idea of material.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of undisguised agent of prefabricated components concrete surface, preparation method include polymer/laminated silicate compound adhesive The preparation of liquid solution, the preparation of Organic-inorganic composite slow setting liquid and undisguised agent form three phases, the specific steps are as follows:
(1) preparation of polymer/laminated silicate composite colloidal solution: under the action of high speed dispersion, by laminar silicic acid Salt clay X1, water soluble polymer are dispersed in water, obtain polymer/laminated silicate composite colloidal solution；
(2) preparation of Organic-inorganic composite slow setting liquid: under the action of high speed dispersion, to above-mentioned polymer/laminated silicon Organic-inorganic composite set retarder composition is added in hydrochlorate composite colloidal solution, is dispersed to homogeneously without precipitating, obtains organic and inorganic Compound slow setting liquid；
(3) it undisguised agent molding: under the action of high speed dispersion, states be added in Organic-inorganic composite slow setting liquid upwards in turn Functional aid, pigment, filler and sustained release long-acting type preservative, mixing are uniformly dispersed, obtain prefabricated components and revealed with concrete surface Bone agent.
Described in step (1) under the action of high speed dispersion, refer to that on-line velocity is the mechanical agitation of 5-30m/s Lower progress.
Clay of laminar silicate X1 described in step (1) prevents material in facade its purpose is to provide thixotropy Sagging and falling phenomenon are generated because viscosity is lower or self weight is larger in brushing process；
Specifically, layered silicate clay X1 is a kind of 2:1 type clay of laminar silicate, belongs to swellable clays, Particle diameter 1-200nm.
Further, layered silicate clay X1 is selected from smectite clay, may be from natural source, is added by natural source Work or through being synthetically prepared, including but not limited to montmorillonite, beidellite, chlorite, saponite, hectorite or synthetic soapstone.
Preferably, the smectite clay is selected from dioctahedral smectite subtribe or trioctaedric smectite subtribe.
The dioctahedral smectite subtribe includes but is not limited to beidellite (English name Beidellite, general chemistry Formula is Na0.5Al2(Si3.5Al0.5)O10(OH)2·n(H2O)), montmorillonite (English name Montmorillonite, general chemistry Formula is (Na, Ca)0.3(Al,Mg)2Si4O10(OH)2·n(H2O)), chlorite (English name Nontronite, general. formula For Na0.3Fe3+ 2(Si,Al)4O10(OH)2·n(H2)) or the modifier of above-mentioned substance O.
The trioctaedric smectite subtribe includes but is not limited to that (English name Saponite, general. formula are saponite Ca0.25(Mg,Fe2+)3(Si,Al)4O10(OH)2·4(H2O)), sauconite (English name Sauconite, general. formula Na0.3Zn3(Si,Al)4O10(OH)2·4(H2O), hectorite (English name Hectorite, general. formula Na0.3(Mg,Li)3Si4O10(OH)2), this base of a fruit aragonite (English name stevensite, general. formula (Ca0.5,Na)0.33(Mg,Fe2+)3Si4O10 (OH)2·n(H2)) or the modifier of above-mentioned substance O.
It is highly preferred that layered silicate clay X1 belongs to the modifier of montmorillonite in dioctahedral smectite, specifically It is commercially available for synthesis nano layer aluminium silicate magnesium clay modified, as Xi Pusen new material Co., Ltd produces HemeciteS100, HemeciteS168 etc..
Wetting of the water soluble polymer its purpose is to improving material on template face described in step (1) Property, adhesiveness and film forming, material is more uniformly adhered on template face without generating shrinkage cavity or " Bei Nade The problems such as whirlpool ".
Specifically, the water soluble polymer is the water of a kind of hydrophilic high molecular material or high molecular material Lotion, number-average molecular weight 10,000-100 ten thousand can disperse, be dissolve or swell in formation aqueous solution or aqueous dispersion in water.
Further, the water soluble polymer may be from water-soluble high molecular polymer, semi-synthetic water Soluble macromolecular polymer or synthesizing water-solubility high molecular polymer.
The water-soluble high molecular polymer include but is not limited to glucose high polymer, carragheen, xanthan gum, I Primary glue, gelatin etc..
The semi-synthetic water soluble polymer includes but is not limited to methylcellulose, carboxymethyl cellulose, ethyl Cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, sodium carboxymethyl starch, galactomannans etc..
The synthesizing water-solubility high molecular polymer includes but is not limited to polyvinyl alcohol powder, polyethylene glycol powder etc..
Preferably, it is water-soluble to be selected from acrylic emulsion, styrene-acrylic emulsion, silicone acrylic emulsion etc. for the water soluble polymer Property macromolecule emulsion.
The lotion that the acrylic emulsion is polymerized by acrylic ester monomer, solid content >=40%, viscosity 200-3500mPas, the A-99 pure-acrylic emulsion of such as commercially available vibration river Chemical Group production.
The styrene-acrylic emulsion is by acrylic acid and the styrene copolymerized lotion synthesized, solid content >=40%, viscosity 200- 3500mPas, such as the DK-M55 polyacrylic water-proof emulsion of commercially available Yantai City Luo Meng waterproof material Co., Ltd production.
Lotion made of silicone acrylic emulsion system acrylate and organosilicon material copolymerization, solid content >=40%, viscosity 200-3500mPas, the A-102 silicone acrylic emulsion of such as commercially available vibration river Chemical Group production.
Mass ratio in step (1), between layered silicate clay X1, water soluble polymer and water are as follows: Clay of laminar silicate X1: water soluble polymer: water=(0.5-5): (2-10): 100.
Its purpose is to provide efficient concrete for Organic-inorganic composite set retarder composition described in step (2) Slow setting ingredient acts on prefabricated components Surface layer's concrete slurry, provides basis to flush out rough surface after demoulding, dosage is step Suddenly the 50%-120% of polymer/laminated silicate composite colloidal solution gross mass described in (1).
Specifically, the Organic-inorganic composite set retarder composition mainly includes inorganic slow setting component and organic slow setting Group is in two sub-sections.
Further, in the Organic-inorganic composite set retarder composition, the inorganic slow setting component and organic slow setting Mass ratio between component: inorganic slow setting component: organic slow setting component=(10-1): 1.
The inorganic slow setting group is divided into industry by-product gypsum or industry by-product gypsum and phosphatic mixture.
The industry by-product gypsum includes desulfurized gypsum and ardealite.
Specifically, the desulfurized gypsum belongs to one of coal-burning power plant's solid waste, main component contains 90% or more Dihydrate gypsum (CaSO4·2H2O)。
The solid slag that the ardealite generates when referring in phosphoric acid production with sulfuric acid treating phosphorite, main component contain There is the dihydrate gypsum (CaSO of 70-90%4·2H2O)。
The phosphate includes but is not limited to sodium pyrophosphate, calgon, sodium tripolyphosphate, methylenediphosphonate etc., Additive amount is the 0-30% of industry by-product gypsum.
In the Organic-inorganic composite set retarder composition, organic slow setting group is selected from alcohols retarder, carbohydrate Retarder, retarder containing carboxyl, hydroxycarboxylate and aminocarboxylate organic type retarder, organic amine and derivative retarder Deng.
The alcohols retarder includes but is not limited to ethylene glycol, propylene glycol, glycerol etc..
The carbohydrate retarder includes but is not limited to sucrose, glucose, fructose, maltose etc..
The retarder containing carboxyl includes but is not limited to citric acid, malic acid, tartaric acid, salicylic acid etc..
The hydroxycarboxylate and aminocarboxylate organic type retarder include but is not limited to sodium gluconate, citric acid Sodium etc..
The organic amine and derivative retarder include but is not limited to cetylamine, triethanolamine, diethanol amine etc..
Functional aid described in step (3) can refer to a variety of auxiliary agents used in water paint field, specific kind It can be tests determined by those skilled in the art with dosage.
Preferably, the functional aid includes following components according to the mass fraction: 0.2-0.5 parts of dispersing agent；Defoaming agent 0.2-0.5 parts；0.2-0.5 parts of substrate wetting agents；0.1-0.3 parts of flavouring agent.
Further, the dispersing agent is mainly the high molecular weight block copolymer solution of the affinity groups containing pigment, commercially available It can obtain, as the DISPERBX080 wetting dispersing agent of Xi Pusen new material Co., Ltd production, Byk Chemie GmbH produce DISPERBYK-190 dispersing agent etc..
The defoaming agent is mainly polyethers or polysiloxane-based, the BYK-025 that is produced such as Byk Chemie GmbH, BYK-028, BYK-011 win the TEGOAirex901W defoaming agent etc. of wound industrial group production.
The substrate wetting agents are a kind of polyether siloxane copolymers having compared with low surface tension, such as commercially available Beijing wheat HY-6086, HY-6051 etc. of your Chemical Industry Science Co., Ltd's production.
The flavouring agent is aqueous liquid food grade essence, is dissolved in alcohols by natural or natural equivalent fragrance or synthetic perfume It is prepared in aqueous solution, including but not limited to floral type, non-flowery scent, Fruity type etc..
Preferably, the flavouring agent is selected from food-grade rosemary type or mint aroma liquid flavor, dissipates in the construction process Issue the fresh scent of health, such as the XY-7049 of commercially available Jiangmen city Xin Yi fragrance Co., Ltd production.
In step (3), the pigment is selected from anatase titanium dioxide or rutile type titanium white (such as commercially available Dupont Co., Ltd Titanium dioxide R-902+, R-960, A-110 of production etc.), at least one of iron oxide (black, red, yellow, blue, green) etc..
The pigment accounts for the undisguised agent material gross mass 1-5% of the concrete surface.
In step (3), the filler selected from fineness be the talcum powder of 600-2000 mesh, calcium carbonate, in barium sulfate extremely Few one kind.
The filler accounts for the undisguised agent material gross mass 5-10% of the concrete surface.
In step (3), the slow release long-acting type antibacterial agent, essence is cationic antibacterial agent and its intercalation modifying stratiform The aqueous dispersions of silicate clay X2.
Further, the cationic antibacterial agent is a kind of medical grade antibacterial agent, and safety is good, environmental sound.
Specifically, the cationic antibacterial agent belongs to guanidine bactericides, including but not limited to chlorhexidine, 1,6- Bis- (N1- rubigan-N5- biguanides base) hexanes of bis- (N1- rubigan-N5- biguanides base) hexane digluconates, 1,6- Diacetate, poly hexamethylene biguanide etc..
In the slow release long-acting type antibacterial agent, the cationic antibacterial agent intercalation modifying clay of laminar silicate X2 is After cationic antibacterial agent ionizes in water phase, positively charged antibacterial agent ionizing group by with clay of laminar silicate X2 interlayer To compensate cation (such as Na of charge balance in domain+、Ca2+Deng) ion-exchange reactions occurs, cationic antibacterial agent is exchanged Enter and is formed in the interlamination region of clay of laminar silicate X1.The present invention using clay of laminar silicate X2 as the carrier of antibacterial agent, Make its in material storing process can slow release antibacterial agent and reach permanent and Continuous sterilization anti-mildew acts on, to overcome Common antibacterial agent durability is poor, cannot play the problem of long-term antibiotic effect.
Above-mentioned reaction mechanism can be indicated according to ion-exchange reactions general. formula:
A++BReS-→B++AReS-, ReS in formula-Indicate the negative electricity layer of clay of laminar silicate X1, B+Indicate laminar silicic acid To compensate the cation of charge balance, A in salt clay X2 interlamination region+Indicate positively charged antibacterial agent ionizing group).
Specifically, the antibacterial agent intercalation modifying clay of laminar silicate X2 is prepared as follows:
The clay of laminar silicate X2 of 5-15 mass parts is added in conical flask, the water of 100 mass parts is added, uses ultrasonic wave Oscillator shakes 30-90min；It again disperses the cationic antibacterial agent of 20-60 mass parts in the water of 100 mass parts, and is added Into the aqueous dispersions of clay of laminar silicate X2, continues to shake 4-8h, obtain slow release long-acting type antibacterial agent；
In step (3), the additive amount of the slow release long-acting type antibacterial agent accounts for the undisguised total matter of agent material of the concrete surface The 0.2-2% of amount needs to stir before addition, prevents the material occurred by precipitating not homogeneous.
In the present invention, the water is all deionized water or distilled water.
The present invention also provides a kind of application methods of undisguised agent of prefabricated components concrete surface, mainly include Following steps:
(1) base cleaning: before brushing construction, the template basal plane that rough surface side need to be arranged in the prefabricated components should be cleaned, Completely, no grease stain, release agent or other foreign matters.Before brushing, the greasy dirt of template basal plane or loose surface layer should be removed clean；Due to New die is too smooth or has preservative oil, not strong to the adhesion strength of undisguised agent, can first brush one layer of cement mortar in die surface (thickness about 1mm), is brushed again after parching；
(2) brush: arrange special messenger by a kind of prefabricated components with the undisguised agent of concrete surface be uniformly painted on punching block, In the templates such as wooden model or mold, it is unable to holiday, should not also accumulate excess；General dosage about 200-300g/m under room temperature2, 1kg dew Bone agent can brush 3-5 square meter；
(3) casting concrete: concreting is carried out in the 72h after the completion of brushing, vibrates, conserve；
(4) it rinses: conserving and complete to the prefabricated components, it is clear not less than 10MPa with operating pressure after dismantling mold Washing machine rinses the not solidified laitance in surface, rinses spacing 10-100cm.Washing time can be freely arranged in 0-10h after demoulding.
Beneficial effects of the present invention:
It is improved as important technology of the invention, using polymer/laminated silicate composite colloidal solution as basis material, with The prior art is compared, and the present invention has both easily construction, strong attachment and anti-sag characteristic, specific manifestation are as follows: first, utilizing laminar silicic acid The water-swellable performance of salt clay, is the pseudoplastic fluid with high thixotropic by design of material, and resulting materials connect in storage Nearly paste can restore mobility under brushing shearing force or when stirring again, while being easy to construct, material can effectively prevent to exist When elevation construction material because consistency is lower or self weight is excessive generate to dirty pendant the phenomenon that, avoid therefore and caused by facade Material is excessively thin and bottom surface material accumulation phenomenon, thus eliminate the undisguised depth of the rough surface often occurred in the prior art not enough and Non-rough face is flow to the problems such as stacking material slow setting of bottom surface, Member Lip local damage；Second, utilizing water soluble polymer The functional characteristics such as thickening, plastic, the film forming of polymer itself, improving material, can to the compatibility and adhesive force of substrate It is more uniform be effectively adhered on template face without after generating shrinkage cavity, not infiltrating or brushes due to adhesive force is insufficient to downslide The problems such as falling.
It is improved as second important technology of the invention, the present invention uses Organic-inorganic composite retarder, with existing skill Art is compared, and mainly have following technical characterstic: one meets energy after water based on main component calcium sulphate dihydrate in industry by-product gypsum Enough quickly dissolutions, and the gel reaction generated with tricalcium aluminate aquation rapidly generates entringite, is wrapped in tricalcium aluminate mineral The characteristics of water is isolated and delays the further hydration reaction of tricalcium aluminate, is played the role of on the surface of grain, and the present invention is secondary using industry Gypsum is produced to inhibit the mineral tricalcium aluminate (C in cement3A) hydration rate makes the same of concrete surface layer retardation capability obtaining When, the usage amount of traditional organic or inorganic retarder is reduced, the comprehensive Utilization Ways of industry by-product gypsum have also been expanded, into One step enhances the ecological, environmental protective and circular economy concept of material；Two, for the different retardation mechanisms of organic and inorganic retarder, The means of organic and inorganic multiple elements design are taken, can avoid the problem that single use is inorganic or organic retarder effect is undesirable, into One step improves the slow setting efficiency and undisguised depth of material, solves the problems, such as that material temperature and environmental suitability are poor, so that material Material can satisfy rough surface setting of the component after steam-cured for a long time.
It is improved as third important technology of the invention, the present invention is using clay of laminar silicate X1 as antibacterial agent Cationic antibacterial agent is designed into the interlayer of clay of laminar silicate X1 by carrier, the chemism based on cation exchange reaction In domain, make its in material storing process can slow release antibacterial agent and reach permanent and Continuous sterilization anti-mildew acts on, thus It overcomes that common antibacterial agent durability is poor, cannot play the problem of long-term antibiotic effect, improves the storage stability of material.
A kind of undisguised agent of prefabricated components concrete surface of the present invention, with polymer/laminated silicate compound adhesive Liquid solution is basis material, take solid waste desulfurized gypsum as main slow setting ingredient and be aided with various functional aids and be prepared, It can delay the concrete surface final setting time in certain depth, treated, and concrete does not need the methods of plane, chisel, milling, file, i.e., Coarse, the solid basal plane that aggregate exposure can be formed can connect into an entirety with newly-laid concrete, guarantee the secured nothing of linkage interface Gap.
Compared with prior art, a kind of undisguised agent collection ecological, environmental protective of prefabricated components concrete surface of the present invention, Efficient slow setting, lasting stability and the features such as be easy to elevation construction in one, be mainly used for prefabricated in precast member for reinforcing bar concrete Plate, prefabricated beam-ends, prefabricated styletable, the rough surface at dry wall end and other concrete construction joints and rear pouring concrete, slurry knot The undisguised material in conjunction face is handled.
Specific embodiment
Technical solution of the present invention is clearly and completely described below by specific embodiment, it is clear that described Embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field Those of ordinary skill's all other embodiment obtained without creative efforts, belongs to protection of the present invention Range.