Self-thermal insulation solid brick, building block or perforated brick for wall and producing method thereof

Abstract

The invention discloses a new wall self-insulating brick or building block, and the preparation method and the application thereof. The wall self-insulating brick or building block contains the following components by weight: 0.5 to 3.0 parts of cement, 0.05 to 4.5 parts of perlite and 0.05 to 4.5 parts of fly ash or slag; after being mixed, the components above is mixed with water with the weight of 30 to 40 percent of the whole weight of the mixture, then the self-insulating brick or building block can be prepared by the traditional brickmaking process without calcining and drying. The heat insulating solid brick or building block is a burning free product that the unit weight is 300 to 450 kg / m3, the strength is 0.8 to 2.0 MPa, the thermal conductivity is 0.08 to 0.15 w / m per k, the water absorptivity is 8 to 12 percent, and the heat preservation capability is eight times higher than that of the common brick. The invention self-insulating brick or building block has the advantages of energy conservation, sound obstruct, heat preservation, fire prevention and bearing, therefore, the invention is architectural heat insulating material with good performance.

Description

technical field [0001] The invention relates to a building material, in particular to a wall self-insulating solid brick, building block or porous brick for building and a preparation method thereof, belonging to the field of building materials. Background technique [0002] At present, the thermal insulation materials using polystyrene board, dense polystyrene board and thermal insulation mortar (cement mixed with polystyrene particles) in the thermal insulation market all have their own insurmountable defects and unsatisfactory parts in technology. [0003] Polystyrene board is an organic material extracted from petroleum. Sensitive to the influence of temperature, the molecular activity is very active. The heat-resistant temperature is only 70°C, and the dimensional change rate reaches 5% after 48 hours at 70°C as measured by experiments. The outdoor temperature in Northeast China is -45°C to -20°C in winter, and the wall temperature in South China can reach a maximum o...

AI Technical Summary

Problems solved by technology

Facing the specific implementation of this requirement and standard, the current thermal insulation exterior wall system, polystyrene board and compact board will face practical problems in technology and construction: the thermal conductivity of polystyrene board is 0.04w / m·k, The thermal conductivity of the dense board is 0.027-0.029w / m·k. Although the thermal conductivity of the dense board is good, its wind resistance value cannot withstand the high-rise buildings.

This will inevitably lead to the disadvantages of cumbersome construction, insufficient wind pressure resistance, and unsafe use on high-rise buildings.

Images