High-performance structure light aggregate concrete and preparation method thereof

Abstract

The invention relates to the technical field of concrete, in particular to high-performance structure light aggregate concrete and a preparation method thereof. The high-performance structure light aggregate concrete is prepared from the following raw materials in parts by weight: 200 to 400 parts of cement, 300 to 900 parts of gravels, 300 to 600 parts of sand, 100 to 200 parts of coal ash, 20 to 50 parts of silica fume, 180 to 250 parts of water, 2 to 8 parts of a water reducing agent, 5 to 10 parts of basalt fiber and 150 to 300 parts of hollow glass beads. The high-performance structure light aggregate concrete has the advantages of reasonable design, light mass and high intensity; the problem of low mixability of light-weight raw materials and concrete is solved; the problem of reduction of the performance of the light aggregate concrete due to a floating phenomenon of light aggregates is improved; the concrete with uniformly distributed light aggregates and high energy absorption characteristic is obtained.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a high-performance structural lightweight aggregate concrete and a preparation method thereof. Background technique [0002] Lightweight aggregate concrete refers to the dry apparent density of not more than 1950kg / m3 prepared with light coarse aggregate, light sand (or ordinary sand), cement and water 3 concrete. The strength of light aggregate concrete can generally reach 15 to 50 grades, and the highest can reach 70 grades. The difference between lightweight aggregate concrete and ordinary concrete lies in the use of lightweight aggregate to reduce the mass and the existence of voids inside. This structural feature gives lightweight aggregate concrete some performance characteristics that are different from ordinary concrete. [0003] The main reason for the uneven structure of ordinary concrete is that the coarse aggregate has a higher density and sinks in the cement slurr...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of high-performance structural light aggregate concrete and its preparation method, reasonable in design, light in weight, high in strength, solve the poor workability of light raw materials and concrete; To solve the problem of performance degradation of lightweight aggregate concrete, to obtain concrete with uniform distribution of light aggregate and good energy absorption properties