Porous sintering heat-insulating hollow block and manufacturing process thereof

Abstract

The invention discloses a porous sintering heat-insulating hollow block and a manufacturing process thereof. According to the porous sintering heat-insulating hollow block, the void rate is 35 to 60 percent, the density is 700 to 1,000 kg / m<3>, and the coefficient of heat conductivity is less than or equal to 0.22 W / m.K. The porous sintering heat-insulating hollow block consists of the following ingredients in percentage by weight: 30 to 45 percent of solid waste, 45 to 55 percent of inorganic binder and 5 to 15 percent of micropore pore forming agent. The manufacturing process comprises the following steps of: 1, performing grain composition; 2, sieving for grading; 3, weighing raw materials; 4, mixing, homogenizing and aging; 5, extruding for forming; 6, cutting and stacking; 7, drying;and 8, sintering. The porous sintering heat-insulating hollow block is reasonable in design, convenient to realize, high in utilization rate of solid wastes, energy-saving, environment-friendly, highin void rate, low in density, high in thermal performance and strength, stable in size and difficult to crack, can be popularized and used in large areas, and has the excellent economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a porous sintered heat-insulating hollow block and a preparation process thereof. Background technique [0002] At present, my country's existing construction area has reached 42 billion m 2 and keep about 2 billion m 2 / year huge growth rate. The wall is the most important enclosure structure of the building, and the wall material is the main structural masonry and enclosure material of the building. The wall material accounts for 70% of the main material of the building, and it is the building material with the largest proportion and the most use in the enclosure structure. At present, the total energy consumption of buildings in my country is about 870 million tons of standard coal, accounting for nearly one-third of the total energy consumption of the society. Public buildings are about 5-15 times that of ordinary residential buildings. The incoming ...

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Problems solved by technology

[0003] The exterior thermal insulation system composed of sintered thermal insulation hollow blocks in the prior art has defects such as easy to fall off, short life, poor safety, and difficult to control quality, while non-sintered hollow blocks such as aerated concrete and foam concrete, etc. Due to its large shrinkage, it is easy to cause problems such as wall cracking, and it cannot be popularized and used in large areas.

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