Perforated brick made of fly ash and preparation process thereof

Abstract

The invention relates to a perforated brick made of fly ash. The perforated brick is prepared from the following raw materials in portions by weight: 30-50 portions of fly ash, 5-15 portions of straws, 10-20 portions of furnace slag, 5-15 portions of polystyrene granules, 4-6 portions of perlite, 0.1-0.3 portion of modifier, 0.04-0.06 portion of carbon black, 10-20 portions of basic magnesium silicate and 10-20 portions of water. In the invention, waste plant fibers, such as the straws and the like, and industrial residues, such as the fly ash, the furnace slag and the like, are used as the raw materials, and the perlite, the modifier, the carbon black and the basic magnesium silicate are used as the cementing agent and auxiliary materials; and the materials are mixed, stirred mechanically molded and naturally cured to prepare a novel wall material. The novel wall material produced by the process has the advantages of high strength, small shrinkage, light weight, favorable sound insulating and heat insulating properties and excellent frost resistance and earthquake-resistant behavior. The invention utilizes the industrial and agricultural waste materials, saves the energy sources and reduces the environmental pollution.

Description

Technical field: [0001] The invention relates to the technical field of building construction materials, in particular to a porous brick made of fly ash and a preparation process thereof. Background technique: [0002] At present, the building wall materials widely used in domestic construction are mainly sintered solid bricks, and the use of sintered solid bricks will consume a lot of soil resources and reduce the area of ​​agricultural land. The country has banned its use in construction. Since the prohibition of the use of sintered solid bricks, there are many kinds of concrete porous bricks made of cinder, slag, water slag and ceramsite on the market, but they generally have disadvantages such as low strength, poor frost resistance, and large drying shrinkage. [0003] Fly ash and slag are industrial wastes discharged from power generation, metallurgy, quarrying and other production. my country discharges a large amount of fly ash and slag every year. They not only occup...

AI Technical Summary

Problems solved by technology

In addition, at present, the majority of rural areas have sufficient sources of straw, especially in the two seasons of wheat harvest and autumn harvest. Most farmers use the method of burning on the spot, which not only seriously pollutes the environment, but also wastes a lot of straw energy.