Recycled backfill concrete prepared from domestic waste incineration residue and its application

Abstract

The invention discloses regenerated backfill concrete prepared from domestic garbage incineration residues and application of the regenerated backfill concrete and belongs to the field of preparation of the regenerated backfill concrete. The regenerated backfill concrete is prepared from the following components in parts by weight: 30 to 40 parts of the domestic garbage incineration residue, 30 to 40 parts of construction waste, 30 to 40 parts of fine aggregate, 5 to 10 parts of limestone powder, 5 to 10 parts of cement and 0.03 to 1 part of a concrete additive. The optimal grading is realized by utilizing substances with different grain diameters; in a preparation process, the substances with relatively small grain diameters are filled into gaps among the substances with last-grade grain diameters in a mixing process through selection of specific grain diameters of all components, so that the adhesion between all grades of the grain diameters is enhanced; the gaps in the concrete are reduced and the compressive strength and durability of the concrete are greatly improved. To sum up, the regenerated backfill concrete with high solid waste content is successfully prepared and has the advantages of high solid waste utilization rate, high compressive strength and the like; meanwhile, the occupied area of solid wastes is also reduced and land resources are saved.

Description

technical field [0001] The invention relates to the field of preparation of recycled backfill concrete, in particular to a recycled backfill concrete prepared by using domestic waste incineration residues and its application. Background technique [0002] With the acceleration of urbanization, the production of municipal solid waste has increased significantly. According to statistics, as of 2010, the annual output of urban domestic waste in my country has reached 352 million tons, and the garbage dump stock has reached more than 7 billion tons. 2 / 3 of the cities in the country are surrounded by garbage. The waste incineration technology can reduce the volume of domestic waste by more than 90% and the quality by about 70%. It can also obtain electricity while reducing the volume of waste incineration. Therefore, the incineration method is considered to be an effective method for the treatment of domestic waste. However, waste incineration produces about 30% (mass fraction) ...

AI Technical Summary

Problems solved by technology

[0015] In order to solve the problems that the compressive strength of recycled backfill concrete is reduced and the utilization rate of solid waste is low when the solid waste content is high, the invention provides a recycled backfill concrete prepared from domestic waste incineration residues and its application

Images