An ecological filling material using multi-component solid waste and its preparation and application method

Abstract

The invention discloses a biologic filling material utilizing multi-element solid wastes. The material comprises the following raw materials in parts by weight: 20-30 parts of red mud, 20-30 parts of construction waste micro powder, 30-40 parts of construction waste fine aggregate, 10-20 parts of gangue, 5-10 parts of micro-expanding agent, 0.1-1 part of aluminum powder, 0.1-1 part of air entraining agent, 0.1-1 part of water reducing agent, 0.1-1 part of cellulose ether and 0.1-1 part of foam stabilizing agent, wherein the total amount of the raw materials is 98-102 parts. When the biologic filling material is used, no cement is needed to blend, solid wastes such as red mud, construction wastes and gangue are well utilized, a product is good in flowbility and continuous expandability, and the filling material is good in stability and compact in structure and has the advantages of high solid waste utilization rate, stable material property and reliable product quality.

Description

technical field [0001] The invention belongs to building materials, and provides an ecological filling material utilizing multiple solid wastes and its preparation and application methods. Background technique [0002] With the rapid development of my country's economy, more and more solid wastes are piled up. A large amount of solid waste not only occupies the land, but also brings serious pollution and harm to the living environment of human beings. It has been widely recognized by the whole society. focus on. The data shows that the total amount of solid waste such as construction waste, red mud, and coal gangue is more than 2 billion tons. Among them, the comprehensive utilization rate of construction waste is less than 5%, and the comprehensive utilization rate of solid waste such as red mud and coal gangue is also lower than 10%, which is far lower than the comprehensive utilization rate of 70% and above in developed countries. On the one hand, the long-term stockpili...

AI Technical Summary

Problems solved by technology

Among them, the comprehensive utilization rate of construction waste is less than 5%, and the comprehensive utilization rate of solid waste such as red mud and coal gangue is also lower than 10%, which is far lower than the comprehensive utilization rate of 70% and above in developed countries.

[0008] However, in the existing research on filling materials, the utilization of construction waste and coal gangue is still seldom, and the dependence on materials such as cement, cement clinker, activator, and water reducing agent is still strong, and the later performance of filling materials is still limited. insufficient research

At the same time, there are few studies on the micro-expansion performance of the existing solid waste filling materials, and the research on the micro-expansion properties of the filling materials plays an important role in the compactness and structural stability of the filling.

Although red mud, tailings and other materials have been used in filling materials for a long time, the stockpiles of solid waste are still increasing year by year. In addition, research on the recycling of solid waste such as construction waste and coal gangue not enough