Coarse slag damp-heat curing brick and production method thereof

Abstract

The invention discloses a coarse slag damp-heat curing brick and a production method thereof. The coarse slag damp-heat curing brick is composed of 15-30wt% of coarse slag, 60-75wt% of fly ash and 7-15wt% of quicklime. The production method utilizes the crude slag discharged from the thermal power plant, turns wastes into slag, realizes the comprehensive utilization of the industrial solid wastes,reduces the exploitation of the natural stones, protects the ecological environment, reduces the apparent density of the product and improves the strength of the green body. A certain proportion of the package pores are inside the coarse slag so that the thermal insulation performance of the product is improved and building energy conservation is realized.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a damp heat curing brick and a production process thereof. Background technique [0002] Pressed bricks, such as solid bricks, hollow bricks and porous bricks, can be cured by autoclaving and steam curing. At present, the molding pressure of the pressing molding machine is required to be no less than 20MPa, the amount of water added must be less than 10%, and 20%-30% aggregate must be added at the same time, so that the pressed bricks can have the required initial brick strength for maintenance; At the same time, under the action of molding pressure, the raw material particles form close contact. During the curing process, the physical and chemical interactions between the material particles are guaranteed to be carried out efficiently, providing conditions for the formation and development of later strength. [0003] Natural aggregates are mainly crushed melon ston...

AI Technical Summary

Problems solved by technology

[0005] Due to the increasingly stringent requirements of the country in terms of environmental protection, quarrying will cause certain damage and pollution to the environment, so there will be periodic supply shortages, which will affect the normal production of enterprises

[0006] (2) Cost rise

[0007] In recent years, the price of local raw materials such as gravel has risen rapidly, resulting in an increase in production costs

[0008] (3) The apparent density of the product is relatively high

[0009] The density of gravel is 2500kg / m 3 Left and right, the apparent density of bricks produced with melon stones or small crushed stones increases accordingly, which is not conducive to reducing the self-weight of the wall, which will lead to an increase in the load-bearing structure section, a reduction in the usable area of ​​​​the building, and an increase in construction costs

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