CN101618956A - Bi-component aqueous ground hardening agent and preparation method thereof - Google Patents
Bi-component aqueous ground hardening agent and preparation method thereof Download PDFInfo
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- CN101618956A CN101618956A CN200910055825A CN200910055825A CN101618956A CN 101618956 A CN101618956 A CN 101618956A CN 200910055825 A CN200910055825 A CN 200910055825A CN 200910055825 A CN200910055825 A CN 200910055825A CN 101618956 A CN101618956 A CN 101618956A
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Abstract
The invention belongs to the field of construction materials, in particular to a bi-component aqueous ground hardening agent and a preparation method thereof. The bi-component aqueous ground hardening agent comprises the following components in percentage by weight: 12-35 percent of first component and 65-88 percent of second component, wherein the first component is a lithium silicate solution, and the second component contains magnesium fluosilicate, silane emulsion, crylic acid resin emulsion, petrolin and water. The bi-component aqueous ground hardening agent has favorable effects of abrasion resistance, reinforcement, compactness, water prevention and seal and can improve the surface smoothness; and after being applied to the concrete ground, the bi-component aqueous ground hardening agent can improve the surface smoothness of concrete and reduce the dust.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of bi-component aqueous ground hardening agent and preparation method thereof.
Background technology
Concrete is the manufactured construction materials of human usage quantity maximum, is widely used in all kinds of Structural Engineerings.Yet the portland cement concrete structure, it is not high to have the surfacing degree as road surface, terrace etc., easily plays ash, wear resistance is relatively poor, and intensity is on the low side, easily greasy dirt infiltration, be difficult to clean, play powder easily, defective such as the higher relatively and beautiful and comfortable sense of management and maintenance expense is relatively poor.In order to overcome these shortcomings, the solution that people usually adopt is to lay floor tile, timber floor or directly at all kinds of organic polymer terrace paint such as the whole coating resin lacquer in concrete floor surface, hard floor paint at terrace surface, but these two kinds of solutions all have certain separately shortcoming: the solution cost of laying floor tile, timber floor exists with management maintenance expense height, terrace surface and is connected the slit, and actual use can be subjected to certain limitation; Defectives such as the method for coating resin lacquer, hard floor paint has that intensity is low, difference of hardness, wear resistance are low, wearing quality and weather resistance are all poor.
At above-mentioned technological deficiency, the processing that ground hardening agent is used for the concrete floor surface had appearred in the last few years.The action principle of ground hardening agent is by concrete floor being carried out effective sfgd. to improve the density of concrete structure, reducing water permeate, to improving the work-ing life of concrete floor, guarantees that the concrete security has good realistic meaning.Therefore, how to develop the surface hardener that can efficiently improve surface strength, degree of compactness and the water-repellancy of base materials such as concrete, mortar, stone material and have important innovative significance and practical value.
In the prior art, concrete floor stiffening agent both domestic and external mainly comprises three series products: first kind early production is a sodium base salt series products, and this stiffening agent can limited raising concrete strength and wear resistance, but its shortcoming is a poor durability, control the accumulation of salt in the surface soil of not taking pains and turn white, construction requirement is higher; Second series products is the potassium base product, and the performance of this stiffening agent improves to some extent than sodium base product, but improves not obviously, still can't satisfy the use needs; The 3rd series products is a lithium base salt series products, this stiffening agent product mainly is the hardened material that utilizes the hypertonicity exploitation of lithium metal ion to make new advances, this stiffening agent can increase substantially the ultimate compression strength and the wear resistance of concrete floor, it can avoid preceding two generations the accumulation of salt in the surface soil that occurs of the product common fault of turning white, the present research focus that has also become present this area of the stiffening agent of this type.Yet, also very limited in the prior art to the report of lithium base salt concrete floor stiffening agent.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of double-component aqueous ground hardening agent and preparation method thereof is provided.
To achieve these goals, the present invention adopts following technical scheme:
A kind of bi-component aqueous ground hardening agent, in the gross weight of this aqueous ground hardening agent, its component and weight percent thereof are:
First component 12%～35%;
Second component 65%～88%;
Wherein, described first component is a lithium silicate solution, contains magnesium silicofluoride, silane emulsion, Emulsion acrylic resin, paraffin and water in described second component, and in the gross weight of described second component, each component and weight percent thereof in second component are:
Magnesium silicofluoride 12%～35%;
The solid content 0.5%～6% of silane emulsion;
The solid content 0.2%～12% of Emulsion acrylic resin;
Paraffin 0.1%～3%;
Water 44%～87.2%.
Preferable, in the lithium silicate solution of described first component, in the gross weight of lithium silicate solution, the weight percent of lithium silicate is 40%～100%, is preferably: 60%～99%, more preferably 85%; The modulus of described lithium silicate solution is 2～5.
Preferably, in described second component, in the gross weight of second component, each component and weight percent thereof in second component are: magnesium silicofluoride is 26%, and the solid content of silane emulsion is 2.5%, and the solid content of Emulsion acrylic resin is 3%, paraffin is 0.5%, and water is 68%.
The dispersion medium of described silane emulsion is a water, and dispersate is n-octyl triethoxyl silane or iso-octyl triethoxyl silane; And in the gross weight of silane emulsion, wherein the weight percent of dispersate is 20%-40%.
Preferable, the pH value of described silane emulsion is 6.5～7.0.
The solid content of described silane emulsion is meant the weight of dispersate in the silane emulsion.
Described Emulsion acrylic resin is that acrylate (dispersate) is dispersed in high molecular, the low-viscosity emulsion liquid resin emulsion that forms in the water (dispersion medium).
Preferable, the dispersate of described Emulsion acrylic resin is selected from the multipolymer of acrylic copolymer, vinylbenzene and acrylic monomer multipolymer or vinyl acetate between to for plastic and Acrylic Acid Monomer, is preferably acrylic copolymer.
Preferred, in the described Emulsion acrylic resin, in the gross weight of Emulsion acrylic resin, the weight percent of acrylate (dispersate) is 20%～50%.
The solid content of described Emulsion acrylic resin is the weight of dispersate in the acrylic resin soln.
Preferably, described magnesium silicofluoride is a technical grade magnesium silicofluoride product.
Preferably, described paraffin is whiteruss.
The preparation method of bi-component aqueous ground hardening agent of the present invention is as follows:
1) preparation of first component: the concentration preparation according to lithium silicate solution contains lithium silicate solution;
2) preparation of second component: be dissolved in the water by proportioning weighing magnesium silicofluoride, carry out mixed getting with silane emulsion, Emulsion acrylic resin, paraffin successively respectively by proportioning then.
Bi-component aqueous ground hardening agent of the present invention can be used for the hardening treatment of substrate surfaces such as mortar, concrete, stone material.And bi-component aqueous ground hardening agent of the present invention is before using, and two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1～3 day.The mechanized construction method of bi-component aqueous ground hardening agent of the present invention is: adopt the construction of spray coating mechanical equipment or hand-held atomizer, also can adopt artificial brushing construction, envrionment temperature should constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0～2.0kg/m
2
The invention provides a kind of double-component efficient aqueous cement concrete floor stiffening agent.This product has wear-resisting preferably, strengthen, closely knit, the waterproof sealing effect, its main mechanism of action is: when product application of the present invention during at concrete surface, activeconstituents, as magnesium silicofluoride, after lithium silicate can infiltrate in hardened cement concrete surface hole and the microfracture, react with hydrated cementitious product calcium hydroxide, generate silica dioxide gel and fluorochemical, fill concrete surface and inner capillary-size pore, reduce the primary defective of cement concrete surface, improve the pore structure on top layer, cement concrete surface intensity is improved, before being untreated, the wear resistance ratio is enhanced about more than once.Simultaneously the silane of low polymerization degree also can be penetrated into inside concrete and hydrolysis or form hydrophobic film or product with the reaction of hydrated cementitious product in the product of the present invention, has hydrophobic, waterproof effect preferably.Thereby thoroughly solve concrete and easily play ash, not wear-resisting, greasy dirt can permeate, and is difficult to clean, and easily by weathering, problem such as can crack, and concrete does not after treatment play ash, and is wear-resisting, impervious, easy to clean, and easy care has effectively improved intensity, density and wear resistance.
Bi-component aqueous ground hardening agent of the present invention has following characteristics:
1) have higher strengthening the property because formula material composition of the present invention can with the cement product, combine closely together, increase density, intensity and the hardness of concrete floor, this hardened process can prevent that the cement flooring is closely knit inadequately and the destruction that produces.
2) have high-wearing feature, the concrete floor after the invention product treatment, its hardness improves greatly, is a kind of wear-resisting very efficiently hardened material.
3) have densification preferably, the present invention deeply infiltrates into concrete surface 5mm, and produces hydrated product, is filled in the inside concrete space, provides far-reaching permanent shutoff to the concrete surface of various forms.Form a strong imperforate entity list surface layer, and perviousness is strong, forms permanent protection, can not peel off and come off with flakey.
4) have waterproof sealing effect preferably, silane can be penetrated into inside concrete and hydrolysis or form hydrophobic film or product with the reaction of hydrated cementitious product in the present invention prescription, has hydrophobic waterproof effect preferably.
5) have higher anti-environmental attack ability, especially can improve anti-carbonization, anti-steel bar corrosion and viscosifying power.Owing to eliminate the concrete salt and the impurity of surperficial unfavorable combination, and the surface enhancing makes the perviousness of concrete carbonic acid gas reduce greatly with closely knit.
6) have ventilation property preferably, the concrete floor after the present invention handles both can stop the infiltration of water molecules, can the water vapour in the concrete be seen through again, and the moisture that is enclosed in the concrete can in time be appeared.
7) bi-component aqueous ground hardening agent of the present invention can improve surface smoothness, be applied in concrete floor after, concrete finish is improved greatly, significantly reduce the generation of dust.
Aqueous ground hardening agent of the present invention can improve performances such as the intensity, wear resistance, waterproof, anti-steel bar corrosion, anti-carbonization of concrete surface, can be widely used in all kinds of concrete surfaces such as being applicable to storage, supermarket, school, parking lot, square, fabrication facility floor.
Embodiment
Further specify the present invention below in conjunction with embodiment, but the present invention is not limited to these concrete real-time modes; Any change or improvement on basis of the present invention all belongs to protection scope of the present invention.
Aqueous ground hardening agent of the present invention is made up of magnesium silicofluoride, lithium silicate, silane emulsion, Emulsion acrylic resin, paraffin, water, can select rational component ratio according to performance requirement, obtains required performance product.In specific implementation process, can pay the utmost attention to following scheme.
Embodiment 1
1, the preparation of aqueous ground hardening agent: in the gross weight of second component, each moiety and weight percent thereof in second component are: magnesium silicofluoride (technical grade magnesium silicofluoride product) 14.3%, (dispersate is the n-octyl triethoxyl silane to silane emulsion, dispersion medium is a water, solid content is 40%, the pH value is 7.0) 1.43%, (dispersate is vinylbenzene and acrylic monomer multipolymer to Emulsion acrylic resin, dispersion medium is a water, and solid content is 50%) 17.14%, paraffin 0.71%, water 66.42%; And in the weight sum of first component and second component, the weight percent of first component is that the weight percent of 30%, the second component is 70%;
1) preparation of first component: according to said ratio weighing modulus is 2～5 lithium silicate, is the lithium silicate solution of 40% (in the gross weight of lithium silicate solution) with the weight percent that is mixed with lithium silicate after deionized water mixes;
2) preparation of second component: be dissolved in the water according to aforementioned proportion weighing magnesium silicofluoride, carry out mixed getting with silane emulsion, Emulsion acrylic resin and whiteruss successively respectively then.Product has performances such as good enhancing, closely knit, waterproof and smooth finish, can be widely used in less demanding, the dustproof demanding fabrication facility floor surface protection of all kinds of fastness to rubbings.
2, product appearance character: the aqueous ground hardening agent that makes in the present embodiment is the white liquid of even matter.
3, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.
Before using, two kinds of components are separately preserved: in use, on concrete floor, use first component earlier, treat the first component drying after, use second component again, dry maintenance 3 days.
Its mechanized construction method is: adopt the construction of spray coating mechanical equipment or hand-held atomizer, also can adopt artificial brushing construction, envrionment temperature should constructed more than 0 degree centigrade during construction, and the construction consumption is 2.0kg/m
2
4, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 40%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Embodiment 2
1, the preparation of aqueous ground hardening agent: in the gross weight of second component, each moiety and weight percent thereof in second component are: magnesium silicofluoride (technical grade magnesium silicofluoride product) 33.3%, (dispersate is the iso-octyl triethoxyl silane to silane emulsion, dispersion medium is a water, solid content is 40%, the pH value is 6.5) 5.56%, (dispersate is an acrylate to Emulsion acrylic resin, dispersion medium is a water, and solid content is 50%) 0.2%, paraffin 0.56%, water 60.38%; And in the weight sum of first component and second component, the weight percent of first component is that the weight percent of 10%, the second component is 90%;
1) preparation of first component: according to said ratio weighing modulus is 2～5 lithium silicate, is the lithium silicate solution of 40% (in the gross weight of lithium silicate solution) with the weight percent that is mixed with lithium silicate after deionized water mixes;
2) preparation of second component: be dissolved in the water according to aforementioned proportion weighing magnesium silicofluoride, carry out mixed getting with silane emulsion, Emulsion acrylic resin and whiteruss successively respectively then.Product has performances such as good enhancing, closely knit, waterproof and smooth finish, can be widely used in less demanding, the dustproof demanding fabrication facility floor surface protection of all kinds of fastness to rubbings.
2, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.
Before using, two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1 day.
Its mechanized construction method is: adopt artificial brushing construction, envrionment temperature is being constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0kg/m
2
3, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 50%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Embodiment 3
1, the preparation of aqueous ground hardening agent: in the gross weight of second component, each moiety and weight percent thereof in second component are: magnesium silicofluoride (technical grade magnesium silicofluoride product) 23.5%, (dispersate is the n-octyl triethoxyl silane to silane emulsion, dispersion medium is a water, solid content is 40%) 2.35%, (dispersate is the multipolymer of vinyl acetate between to for plastic and Acrylic Acid Monomer to Emulsion acrylic resin, dispersion medium is a water, and solid content is 50%) 5.88%, paraffin 2.35%, water 65.92%; And in the weight sum of first component and second component, the weight percent of first component is that the weight percent of 15%, the second component is 85%;
1) preparation of first component: according to said ratio weighing modulus is 2～5 lithium silicate, is the lithium silicate solution of 40% (in the gross weight of lithium silicate solution) with the weight percent that is mixed with lithium silicate after deionized water mixes;
2) preparation of second component: be dissolved in the water according to aforementioned proportion weighing magnesium silicofluoride, carry out mixed getting with silane emulsion, Emulsion acrylic resin and whiteruss successively respectively then.Product has performances such as good enhancing, closely knit, waterproof and smooth finish, can be widely used in less demanding, the dustproof demanding fabrication facility floor surface protection of all kinds of fastness to rubbings.
2, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.
Before using, two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1 day.
Its mechanized construction method is: adopt artificial brushing construction, envrionment temperature is being constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0kg/m
2
3, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 50%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Embodiment 4
1, the preparation of aqueous ground hardening agent:
1) preparation of first component: the delivery number is 2～5 lithium silicate 48g, adds the 72g deionized water, and the preparation weight percent is 40% lithium silicate solution 120g;
2) preparation of second component: weighing 105.6g magnesium silicofluoride (technical grade magnesium silicofluoride product) is dissolved in the 748g water, (dispersate is the n-octyl triethoxyl silane with the 22g silane emulsion successively respectively then, dispersion medium is a water, solid content is 20%), (dispersate is the multipolymer of vinyl acetate between to for plastic and Acrylic Acid Monomer to the 3.52g Emulsion acrylic resin, dispersion medium is a water, and solid content is 50%) and the 0.88g whiteruss carry out mixed.
2, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.
Before using, two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1 day.
Its mechanized construction method is: adopt artificial brushing construction, envrionment temperature is being constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0kg/m
2
3, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 30%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Embodiment 5
1, the preparation of aqueous ground hardening agent:
1) preparation of first component: the delivery number is 2～5 lithium silicate 280g, adds the 70g deionized water, and the preparation weight percent is 80% lithium silicate solution 350g;
2) preparation of second component: weighing 227.5g magnesium silicofluoride (technical grade magnesium silicofluoride product) is dissolved in the 230.75g water, (dispersate is the n-octyl triethoxyl silane with the 48.75g silane emulsion successively respectively then, dispersion medium is a water, solid content is 40%), (dispersate is the multipolymer of vinyl acetate between to for plastic and Acrylic Acid Monomer to the 130g Emulsion acrylic resin, dispersion medium is a water, and solid content is 50%) and the 13g whiteruss carry out mixed.
2, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.
Before using, two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1 day.
Its mechanized construction method is: adopt artificial brushing construction, envrionment temperature is being constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0kg/m
2
3, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 30%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Embodiment 6
1, the preparation of aqueous ground hardening agent:
1) preparation of first component: the delivery number is 2～5 lithium silicate 200g;
2) preparation of second component: weighing 96g magnesium silicofluoride (technical grade magnesium silicofluoride product) is dissolved in the 280g water, (dispersate is the n-octyl triethoxyl silane with the 160g silane emulsion successively respectively then, dispersion medium is a water, solid content is 30%), (dispersate is the multipolymer of vinyl acetate between to for plastic and Acrylic Acid Monomer to the 240g Emulsion acrylic resin, dispersion medium is a water, and solid content is 40%) and the 24g whiteruss carry out mixed.
2, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.
Before using, two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1 day.
Its mechanized construction method is: adopt artificial brushing construction, envrionment temperature is being constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0kg/m
2
3, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 30%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Embodiment 7
1, the preparation of aqueous ground hardening agent:
1) preparation of first component: the delivery number is 2～5 lithium silicate 212.5g, adds the 37.5g deionized water, and the preparation weight percent is 85% lithium silicate solution 250g;
2) preparation of second component: weighing 90g magnesium silicofluoride (technical grade magnesium silicofluoride product) is dissolved in the 633g water, (dispersate is the n-octyl triethoxyl silane with the 18.75g silane emulsion successively respectively then, dispersion medium is a water, solid content is 20%), (dispersate is the multipolymer of vinyl acetate between to for plastic and Acrylic Acid Monomer to the 7.5g Emulsion acrylic resin, dispersion medium is a water, and solid content is 20%) and the 0.75g whiteruss carry out mixed.
2, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.Before using, two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1 day.
Its mechanized construction method is: adopt artificial brushing construction, envrionment temperature is being constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0kg/m
2
3, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 30%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Embodiment 8
1, the preparation of aqueous ground hardening agent:
1) preparation of first component: the delivery number is 2～5 lithium silicate 212.5g, adds the 37.5g deionized water, and the preparation weight percent is 85% lithium silicate solution 250g;
2) preparation of second component: weighing 280g magnesium silicofluoride (technical grade magnesium silicofluoride product) is dissolved in the 96g water, (dispersate is the n-octyl triethoxyl silane with the 160g silane emulsion successively respectively then, dispersion medium is a water, solid content is 30%), (dispersate is the multipolymer of vinyl acetate between to for plastic and Acrylic Acid Monomer to the 240g Emulsion acrylic resin, dispersion medium is a water, and solid content is 40%) and the 24g whiteruss carry out mixed.
2, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.Before using, two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1 day.
Its mechanized construction method is: adopt artificial brushing construction, envrionment temperature is being constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0kg/m
2
3, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 30%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Embodiment 9
1, the preparation of aqueous ground hardening agent:
1) preparation of first component: the delivery number is 2～5 lithium silicate 170g, adds the 30g deionized water, and the preparation weight percent is 85% lithium silicate solution 200g;
2) preparation of second component: weighing 208g magnesium silicofluoride (technical grade magnesium silicofluoride product) is dissolved in the 428g water, (dispersate is the n-octyl triethoxyl silane with the 100g silane emulsion successively respectively then, dispersion medium is a water, solid content is 20%), (dispersate is the multipolymer of vinyl acetate between to for plastic and Acrylic Acid Monomer to the 60g Emulsion acrylic resin, disperses
Medium is a water, and solid content is 40%) and the 4g whiteruss carry out mixed.
2, use: the bi-component aqueous ground hardening agent that makes in the present embodiment is used for the hardening treatment of concrete surface.
Before using, two kinds of components are separately preserved; In use, on concrete floor, use earlier first component, treat the first component drying after, use second component again, dry maintenance 1 day.
Its mechanized construction method is: adopt artificial brushing construction, envrionment temperature is being constructed more than 0 degree centigrade during construction, and the construction consumption is 1.0kg/m
2
3, product property detects:
1) wear resistance detects: under identical wear test condition, deterioration is below 60% of normal concrete;
2) ultimate compression strength: behind the brushing 7d, the comparable concrete that is not coated with of its ultimate compression strength improves more than 30%;
3) surface hardness: behind the brushing 7d, the concrete surface Mohs' hardness can improve 2 grades;
4) water resistance detects: the concrete behind the external coating, and its impervious pressure can improve more than 30%;
5) densification: the aqueous ground hardening agent that makes in the present embodiment deeply infiltrates into concrete surface 5mm later in drying, and generation hydrated product, be filled in the inside concrete space, concrete surface to various forms provides far-reaching permanent shutoff, forms a strong imperforate entity list surface layer.
Claims (10)
1, a kind of bi-component aqueous ground hardening agent, in the gross weight of described bi-component aqueous ground hardening agent, each component and weight percent thereof are:
First component 12%～35%;
Second component 65%～88%;
Wherein, described first component is a lithium silicate solution, contains magnesium silicofluoride, silane emulsion, Emulsion acrylic resin, paraffin and water in described second component, and in the gross weight of described second component, each component and weight percent thereof in second component are:
Magnesium silicofluoride 12%～35%;
The solid content 0.5%～6% of silane emulsion;
The solid content 0.2%～12% of Emulsion acrylic resin;
Paraffin 0.1%～3%;
Water 44%～87.2%.
2, the bi-component aqueous ground hardening agent described in claim 1, it is characterized in that, in described second component, gross weight in second component, each component and weight percent thereof are: magnesium silicofluoride is 26%, and the solid content of silane emulsion is 2.5%, and the solid content of Emulsion acrylic resin is 3%, paraffin is 0.5%, and water is 68%.
3, as the described bi-component aqueous ground hardening agent of arbitrary claim in claim 1 or 2, it is characterized in that, in the described lithium silicate solution, in the gross weight of lithium silicate solution, the weight percent of lithium silicate is 40%～100%, and the modulus of described lithium silicate solution is 2～5.
As the described bi-component aqueous ground hardening agent of arbitrary claim in claim 1 or 2, it is characterized in that 4, the dispersion medium of described silane emulsion is a water, dispersate is n-octyl triethoxyl silane or iso-octyl triethoxyl silane; And in the gross weight of described silane emulsion, wherein the weight percent of dispersate is 20%～40%.
5, as the described bi-component aqueous ground hardening agent of arbitrary claim in claim 1 or 2, it is characterized in that, the dispersion medium of described Emulsion acrylic resin is a water, and dispersate is selected from the multipolymer of acrylic copolymer, vinylbenzene and acrylic monomer multipolymer or vinyl acetate between to for plastic and Acrylic Acid Monomer.
6, the bi-component aqueous ground hardening agent described in claim 5 is characterized in that, in the described Emulsion acrylic resin, in the gross weight of Emulsion acrylic resin, the weight percent of dispersate is 20%～50%.
As the described bi-component aqueous ground hardening agent of arbitrary claim in claim 1 or 2, it is characterized in that 7, described magnesium silicofluoride is a technical grade magnesium silicofluoride product.
As the described bi-component aqueous ground hardening agent of arbitrary claim in claim 1 or 2, it is characterized in that 8, described paraffin is whiteruss.
9, the preparation method of the described bi-component aqueous ground hardening agent of arbitrary claim in the claim 1～8 comprises the steps:
1) preparation of first component: the concentration preparation according to lithium silicate solution contains lithium silicate solution;
2) preparation of second component: be dissolved in the water by proportioning weighing magnesium silicofluoride, carry out mixed getting with silane emulsion, Emulsion acrylic resin, paraffin successively respectively by proportioning then.
10, the using method of the described bi-component aqueous ground hardening agent of arbitrary claim in the claim 1～8 comprises the steps: to use earlier first component on concrete floor, treat the first component drying after, use second component again, dry maintenance 1～3 day.
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