Gangue floating bead thermal-insulation concrete and preparation method and application thereof

Abstract

The invention discloses gangue floating bead thermal-insulation concrete. The gangue floating bead thermal-insulation concrete of each cubic meter is prepared from the following raw materials: 240-310kg of water, 450-650kg of cement, 980-1355kg of coarse aggregate, 250-600kg of fine aggregate, 90-150kg of glass beads, 25-75kg of silica fume and 3.95-7.64kg of a water reducer, wherein the fine aggregate comprises natural river sand and floating beads, the floating beads replace the natural river sand in volume and the volume replacement rate thereof is 0-60%; the coarse aggregate comprises natural pebbles and gangue or fully comprises gangue, the gangue replaces the natural pebbles in volume, and the volume replacement rate thereof is 0-100%. The gangue floating bead insulative concrete prepared has the characteristics of insulating and bearing, is suitable for bearing structures and members of buildings, and can be directly applied to engineering practice.

Description

technical field [0001] The invention belongs to the field of building materials and relates to concrete, in particular to a kind of coal gangue floating bead thermal insulation concrete and its preparation method and application. Background technique [0002] my country is the country with the largest coal mining volume in the world. According to incomplete statistics, as of 2012, my country's coal production reached 3.68 billion tons, accounting for 46.5% of the global coal production. Coal gangue is a kind of black rock associated with coal formation, and is a solid waste with low carbon content produced during coal mining and coal washing. At the same time, coal gangue, as the solid waste with the largest output, has the "two sides" of environmental economy, discarding it for harm and using it for treasure. The accumulation of coal gangue not only invades a large amount of land resources, but also causes soil and water pollution, affects the growth of crops, and endanger...

AI Technical Summary

Problems solved by technology

The accumulation of coal gangue not only encroaches on a large amount of land resources, but also causes soil pollution and water pollution, which affects the growth of crops and endangers human health.

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