Thermal insulation concrete with spontaneous combustion coal gangue aggregate self-compacting structure and preparation method of thermal insulation concrete

Abstract

The invention provides spontaneous combustion coal gangue aggregate self-compacting structure thermal insulation concrete and a preparation method thereof, and the method is as follows: the spontaneous combustion coal gangue aggregate self-compacting structure thermal insulation concrete is composed of a component A and a component B, the component A is prepared from the following materials according to the corresponding mass ratio: cement: admixture: coarse aggregate: spontaneous combustion coal gangue fine aggregate: commercially available light fine aggregate = 1: (0.2-0.25): (0-2.72): (0-2.89): (0-0.0145); and the component B is prepared from the following materials according to the corresponding mass ratio: water: an admixture = (0.45-0.5): (0.002-0.0024) (accounting for the sum of the cement and the admixture). According to the mix proportion and the complete preparation method of the novel thermal insulation concrete with the self-compacting structure prepared from the large-mixing-amount coal-based solid waste, the coal-based solid waste is fully utilized, and meanwhile, the concrete has the characteristics of load bearing, thermal insulation, fire prevention, no vibration, energy conservation, environmental protection, waste utilization, economy and the like. The product has the characteristics of synchronous construction of building wall thermal insulation and the structure, same service life of the building thermal insulation and the wall and the like.

Description

technical field [0001] The invention belongs to the technical field of building energy-saving materials, in particular to self-combustible coal gangue aggregate self-compacting thermal insulation concrete and a preparation method thereof. Background technique [0002] With the continuous development of the national economy, the number of high-rise buildings in the city is gradually increasing, and most high-rise residential buildings adopt the form of shear wall structure. Stiffness requirements. At present, the main components such as shear walls, floors and stairs in my country are mostly made of ordinary concrete with a strength grade of C20-C30. Due to its high self-weight and thermal conductivity, the thermal insulation performance is poor, and the external wall is often used in cold regions. The method of layering improves the thermal insulation performance of the wall, but the relevant fire protection regulations require the use of non-combustible or flame-retardant m...

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Problems solved by technology

[0004] The invention provides self-combustible coal gangue aggregate self-compacting structural thermal insulation concrete and its preparation method, which solves the problems caused by relatively large self-weight and thermal conductivity of structural concrete in cold regions, high cost, low strength of thermal insulation concrete, and complicated construction in the related art. The problem

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