Recycled fine aggregate high-strength self-compacting concrete

Abstract

The invention discloses recycled fine aggregate high-strength self-compacting concrete, which is prepared from the following raw materials in parts by weight: 180 to 200 parts of cement, 350 to 400 parts of stone, 250 to 300 parts of coarse aggregate, 190 to 220 parts of recycled fine aggregate, 40 to 60 parts of steel slag, 50 to 70 parts of fly ash, 15 to 20 parts of filler, 30 to 50 parts of modified zeolite powder, 5 to 10 parts of water reducing agent and 100 to 120 parts of water. By using the recycled fine aggregate, the use amount of natural fine aggregate such as river sand is reduced, the cost is saved, the resource loss is reduced, the modified zeolite powder reacts with cement to generate calcium silicate hydrate, cement hydration is promoted, the viscosity is improved, the use amount of the cement can be remarkably reduced, the hardness of the zeolite powder is obviously greater than that of the cement, the hardness of the concrete material is obviously improved, the strength of the cement is further improved, the cost performance is excellent by adding the steel slag, and the cement is suitable for production and use.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a recycled fine aggregate high-strength self-compacting concrete. Background technique [0002] Concrete refers to the artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, uniformly stirred, compacted and cured. Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, that is, fresh concrete or concrete mixture; the hard state after hardening, that is, hardened concrete or concrete. [0003] Nowadays, with the development and progress of science and technology, energy conservation and environmental protection have become one of our main advocates. Extensive use of concrete will lead to an increase in the use of aggregate materials such as river sand, while waste construction concrete materials can...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, with the development and progress of science and technology, energy conservation and environmental protection have become one of our main advocates. Extensive use of concrete will lead to an increase in the use of aggregate materials such as river sand, while waste construction concrete materials cannot be effectively utilized, resulting in concrete costs. increase, so we propose a recycled fine aggregate high-strength self-compacting concrete to solve the above problems