Method for preparing light concrete by municipal solid waste incineration fly ash

Abstract

The invention discloses a method for preparing light concrete by municipal solid waste incineration fly ash. The light concrete comprises the following compositions according to material ratio: 330 to 370kg / m<3> of the municipal solid waste incineration fly ash, 450 to 475kg / m<3> of 525# common Portland cement, 325 to 340kg / m<3> of water-granulated slag, 350 to 370kg / m<3> of ordinary clay porcelain granules, 230 to 240kg / m<3> of diabase slag, and 2.7 to 2.9kg / m<3> of admixture. The method uses the municipal solid waste incineration fly ash to prepare the light concrete, can solidify heavy metal in fly ash, thereby achieving the aim of innocent treatment of the municipal solid waste incineration fly ash. The method has a simple process, and the obtained finished product has strength grade of CL40 and apparent density of 1800, and has good macroscopic performance.

Description

technical field [0001] The invention relates to a waste utilization method of household garbage, in particular to a method for preparing light concrete by using household garbage incineration fly ash. Background technique [0002] Domestic waste incineration fly ash is a recognized hazardous waste, which concentrates a large amount of heavy metals and also contains a small amount of highly toxic dioxin-like organic substances. my country's GWKB3-2000 clearly stipulates that fly ash is a hazardous waste that must be treated in a harmless manner. treatment. Domestic waste incineration fly ash is another resource. Fly ash contains more silicates and aluminates, which can be used as admixtures for building materials; fly ash also contains more vitreous and many active network activation Metal ions and fly ash also have a certain activity; in addition, fly ash has a particle size composition of about 200 meshes, which also increases the activity of fly ash and can save energy in ...

AI Technical Summary

Problems solved by technology

However, due to the limitation of its own performance, the vitrified body cannot be directly used as a building material. It is often used as a batch of cement or as an aggregate in concrete; alkali corrosion

On the basis of vitrification, Song Yu used fly ash-based raw materials to make glass-ceramics with better performance, but the processing temperature was as high as 1,500°C, which made the process quite difficult.

Images