Sintering-free brick containing engineering muck and manufacturing method thereof

Abstract

The invention belongs to the field of waste recycling and specifically relates to a sintering-free brick containing engineering muck and a manufacturing method thereof. The sintering-free brick comprises the following raw materials in parts by weight: 15-20 parts of engineering muck, 3-5 parts of iron-ore slag, 10-12 parts of gangue, 4-7 parts of gypsum, 6-8 parts of shale, 1-2 parts of celluloseether, 1-2 parts of fine white carbon black and 0.5-0.8 part of viscosity modifier. Before use, the engineering muck is treated with the viscosity modifier which is prepared according to the followingsteps: mixing methallyl sulfonate, sodium persulfate and urea at a mass ratio of (1-1.2):(2-2.5):(0.2-0.3):(0.1-0.2), and then putting into a 3-5% sodium hydroxide solution and reacting for 60-70minat 55-60 DEG C. Thus, the viscosity of engineering muck can be effectively increased, so that the strength and quality of the prepared end product of brick can be effectively promoted. Cellulose etherand fine white carbon black are added into the raw materials, so that the strength and compressive property of the prepared end product can be promoted.

Description

technical field [0001] The invention belongs to the field of waste recycling, and in particular relates to a non-sintered brick containing engineering slag and a production method thereof. Background technique [0002] With the rapid development of my country's national economy, the rapid development of the real estate industry and the accelerated pace of engineering construction have resulted in a huge output of urban construction waste and engineering dregs, which mainly come from earthwork and waste dregs generated at construction sites ,mud. [0003] The output of engineering muck in my country is huge, and cities are basically surrounded by muck. Construction waste occupies a large amount of land, pollutes soil and groundwater sources, affects city appearance and many other social problems, which have become an important issue faced by construction waste management departments and environmental protection departments. In addition, due to the relationship between the di...

AI Technical Summary

Problems solved by technology

In addition, due to the relationship between the distance of the road and the need to pay the fees stipulated by the government for the disposal of muck, the phenomenon of random dumping occurs.

Random dumping of construction waste and construction waste in roads, green spaces and other public places where construction waste has not been approved for disposal will directly cause dust to fly in the city and cause deterioration of environmental quality

[0004] At present, the traditional treatment method for engineering dregs is mainly to use simple landfill, which often leads to the occupation of a large amount of land. The phenomenon of burial has gradually appeared in the suburbs, on both sides of the road, and even in areas such as rivers and lakes, which has caused serious pollution to the urban environment and also brought visual pollution, which has evolved into a "scar" of the city. Disposal has become a key issue that must be considered in the current process of ecological civilization construction

[0005] The use of engineering slag to make bricks is one of the methods to realize the resource utilization of engineering slag. However, due to the differences in the properties of the engineering slag itself, the quality of the bricks will be seriously affected. Most of the current brick-making methods directly use engineering slag. As raw materials, without treatment, the quality of the finished bricks is poor and easy to break