Mine tailing-doped high-performance concrete and preparation method thereof

Abstract

The invention discloses mine tailing-doped high-performance concrete and a preparation method thereof. Per cubic metre of the mine tailing-doped high-performance concrete is prepared from the following raw materials: 80-100 kg of silicate cement, 20-40 kg of lime powder, 10-20 kg of aluminium powder, 50-80 kg of coal ash, 5-12 kg of a water reducer, 50-80 kg of iron mine tailings, 80-100 kg of stone, and 350-480 kg of water. According to the mine tailing-doped high-performance concrete and the preparation method thereof disclosed by the invention, mineral-dressing iron mine tailings are adequately utilized, comprehensive utilization for resources is realized, and high-quality iron mine tailing-doped high-performance concrete is prepared; a low-density autoclaved aerated concrete product prepared by the preparation method disclosed by the invention has a good heat insulation effect and high fireproof performance which is capable of meeting the national grade-A fireproof indexes; the preparation method disclosed by the invention can be used for preparing a low-density autoclaved aerated concrete product which is low in density, low in heat conductivity coefficient, and convenient to construct.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to high-performance concrete mixed with tailings ore and a preparation method thereof, which can be applied to the industries of on-site mixing concrete, concrete products and pre-mixed concrete. Background technique [0002] As the global energy problem becomes more and more obvious, the energy-saving issue of housing construction is getting more and more close attention from the whole society. It is imperative to develop green, environmentally friendly and energy-saving building materials, and green building energy-saving products will also be more and more favored by ordinary people. At present , my country puts forward newer and higher requirements for building exterior wall insulation materials, and the current building exterior wall insulation measures have serious fire hazards. [0003] Air-entrained concrete is a kind of thermal insulation...

AI Technical Summary

Problems solved by technology

[0004] At present, on the one hand, the tailings dam formed by iron selection in China occupies a large amount of cultivated land and has not fully played its role. On the other hand, due to large-scale engineering construction, there is a serious shortage of fly ash resources, and the fly ash for preparing high-performance concrete is extremely scarce.