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Preparation method of highly-impermeable rubber concrete material

A rubber concrete and high-resistance technology, applied in the field of concrete materials, can solve problems such as poor impermeability, uneven distribution, and incomplete bonding of particle interfaces, so as to improve mechanical strength, impermeability, and roughness Effect

Inactive Publication Date: 2019-06-18
江苏常大绿恒环境工程有限公司
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  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a high impermeability rubber in view of the uneven distribution of rubber particles inside the rubber concrete after molding of the current rubber concrete material, and the insufficient bonding of the particle interface, resulting in poor impermeability. Method for preparing concrete material

Method used

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  • Preparation method of highly-impermeable rubber concrete material

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Embodiment Construction

[0025]In terms of parts by weight, weigh 45-50 parts of deionized water, 3-5 parts of aluminum chloride and 3-5 parts of 500-mesh aluminum powder, stir and mix them, and place them at 95-110°C for 2-3 hours to obtain Mixed solution and weigh 45-50 parts of deionized water, 15-20 parts of absolute ethanol, 10-15 parts of tetraethyl orthosilicate and 6-8 parts of 15% nitric acid by weight and place them in the Erlenmeyer flask , stir and mix and place at room temperature for 1-2 hours to obtain a modified solution. Add the modified solution dropwise to the mixed solution at a mass ratio of 1:10, and control the acceleration rate of the modified droplet to 2-3mL / min, after the dropwise addition is completed, stir and mix and evacuate and concentrate for 1-2 hours, control the vacuum degree to 25-30Pa, obtain a viscosity of 25-35Pa·s, and obtain the modified liquid base liquid; according to the mass ratio of 1:15, the Add 5% sodium hypochlorite solution dropwise into the modified...

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Abstract

The invention relates to a preparation method of a highly-impermeable rubber concrete material, and belongs to the technical field of concrete materials. A sol material is prepared by using anhydrousaluminum chloride and aluminum powder as aluminum sources and tetraethyl orthosilicate as a silicon source, the surface of a rubber material is coated with the sol material, and the uniform dispersionof the sol material on the surface of the rubber material body forms new entanglement points, so the entanglement of the rubber material and the molecular chain of the surface of the concrete material is enhanced, thereby the tensile strength of the composite material is increased; and coating modification using the sol makes the sol and the rubber material form a good wetting interface, so fibers, a mixture and the rubber material are uniformly dispersed in a matrix; and modification using the sodium hypochlorite composite silica sol and surface oxidation and chlorination using sodium hypochlorite are carried out to realize the surface modification of rubber composite material, so the number of polar groups on the surface is increased, the wettability is improved, the roughness is improved, the mechanical strength of the material is improved, and the impermeability of the material is improved.

Description

technical field [0001] The invention relates to a preparation method of a high-impermeability rubber concrete material, which belongs to the technical field of concrete materials. Background technique [0002] Commercial concrete is the main material of modern engineering structures. At present, more than 90% of my country's airport runways use cement commercial concrete pavement. Although the cement commercial concrete structure has high strength, good stability and strong heavy load resistance, it is a brittle material with poor toughness and impact resistance, and is prone to cracks, especially when the pavement structure using cement commercial concrete is subjected to dynamic loads. It will produce a lot of stress and deformation, which will easily cause the misalignment, cracking and damage of the base layer of the road panel, and shorten the service life. Therefore, it is necessary to improve the overall impact resistance and control the damage effect under the influe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/00C04B20/02C04B20/10C04B18/22C04B111/27C04B111/20
CPCY02W30/91
Inventor 谭祖生
Owner 江苏常大绿恒环境工程有限公司
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