Glass pumice concrete and preparation method thereof

Abstract

The invention discloses glass pumice concrete and a preparation method thereof, and belongs to the technical field of building materials. The glass pumice concrete has the advantages of light weight,low density, high strength, good thermal insulation property and the like. Compared with existing common concrete, the density is reduced by 30% in the same strength condition, and the requirements tothe high-strength light concrete in the building field can be satisfied now. In addition, a heat conductivity coefficient of the provided glass pumice concrete is lower, and can reach 0.213 W / (mK) minimally, but the heat conductivity coefficient of the common concrete is 1.28 W / (mK), it is demonstrated that the glass pumice concrete has the good thermal insulation property. The glass pumice concrete is capable of using glass pumice as a raw material, processing building wastes, saving land resources, meeting the requirements of green building development and sustainable development, and reflecting a green building concept.

Description

technical field [0001] The invention relates to glass pumice concrete and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Concrete refers to the general designation of engineering composite materials in which aggregates are cemented into a whole by gel materials. The term concrete usually refers to the use of cement as a cementitious material, sand and stone as aggregates, and water in a certain proportion. Cement concrete obtained by mixing, also known as ordinary concrete, is widely used in civil engineering. [0003] Due to its high density and high thermal conductivity, ordinary concrete has the defects of heavy weight and poor thermal insulation performance, so it is not suitable for the requirements of light weight and thermal insulation performance of concrete in today's construction field. Therefore, research on new concrete materials has always been a hot spot. [0004] Now, in response to the def...

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Problems solved by technology

[0004] Now, in response to the defects of ordinary concrete, many new concrete materials have been developed, such as ceramsite concrete, which can solve the problems of large volume and poor thermal insulation performance of ordinary concrete, but because ceramsite is spherical, it is difficult to bond with cementitious materials. Poor, has the defect of low strength; such as foam concrete concrete, which can solve the problem of the weight of ordinary concrete, but it has the defects of low strength and easy water absorption due to the large number of air bubbles generated during the curing process.

[0005] The above-mentioned new concrete still cannot meet the requirements of the construction field for other working properties such as strength and thermal insulation performance.

[0006] Glass pumice is an artificial porous material prepared from construction waste glass after crushing, high-temperature combustion, foaming and other processes. It has the characteristics of porous light weight, wear resistance and compression resistance, low thermal conductivity, heat preservation and fire resistance, stability and environmental protection, etc. It is often used in roof greening, pavement permeation, pipe laying and gardening, etc., but because of its complex preparation process and low output, it is not often considered as a material for concrete