High-strength fired perforated brick

Abstract

The invention relates to a high-strength fired perforated brick. The brick comprises an outer brick body and an inner brick body in the center of the outer brick body. The inner brick body comprises a shaft and two prism parts, and the two prism parts are arranged on the left and right sides of the shaft and symmetric about the shaft. Compared with existing fired perforated bricks of similar kinds, the compressive strength of the front and rear end faces or the left and right end faces of the high-strength fired perforated brick is almost doubled, cracks of walls can be effectively avoided during subsequent construction, and the safety is high.

Description

technical field [0001] The invention relates to the technical field of porous bricks, in particular to a high-strength sintered porous brick. Background technique [0002] Sintered porous bricks are made of clay, shale, etc. as the main raw materials, which are processed, shaped and sintered. The percentage of the total area of ​​pores of the sintered porous brick to the area of ​​the brick where it is located is called the porosity of the sintered porous brick, which should generally be above 15%. Compared with solid bricks, sintered porous bricks can save a lot of land, soil and fuel for burning bricks, reduce the weight of transportation; reduce the labor intensity of brick making and masonry, and speed up the construction progress; reduce the weight of buildings, increase the number of building floors, Reduce the cost. [0003] Sintered porous bricks are generally provided with a plurality of elongated through holes running through the entire thickness of the brick bod...

AI Technical Summary

Problems solved by technology

Although the strength grades of the existing hollow bricks are: MU30, MU25, MU20, MU15, MU10, MU7.5, MU5.0, MU3.5; but this strength grade refers to the compressive strength of the upper and lower end faces of the sintered porous brick, The compressive strength of the front and rear end faces and the left and right end faces of the sintered porous bricks is relatively low; a large number of actual tests on the commonly used sintered porous bricks in the market found that the porosity rate is 25% and the strength grade of the upper and lower end faces is MU30 For the sintered porous brick, the compressive strength of the front and rear end faces is 8~13MPa, the compressive strength of the left and right end faces is 11~15MPa, the compressive strength of the front and rear end faces or the compressive strength of the left and right end faces The test refers to the experimental method specified in Chapter 4 of GB / T 2542-1992, but the test surface is changed to the front and rear end faces or the left and right end faces

Due to the low compressive strength of the front and rear end faces or the left and right end faces of the existing sintered porous bricks, during actual construction, when the wall surface is knocked, punched, re-opened, decorated and constructed, etc., If the wall made of existing sintered porous bricks is not properly operated, cracks are likely to occur on the wall surface, and the sintered porous bricks are broken in a large area, which poses a safety hazard

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