Abstract：It studies 6 groups of 60 pieces of waste liquor of alcohol sintered shale rectangular porous brick masonry specimens under bending performance( along the straight joint and a slot),to analyze a comprehensive of the failure characteristics of specimens and bending strength. The results show that the failure characteristics of waste liquor of alcohol sintering shale rectangular porous brick is the same with common sintering of clay brick. Through the regression analysis by least square regression to get bending strength of waste liquor of alcohol sintering shale rectangular porous brick coefficient calculation formula,the formula proposed in is f(1)tm,m=0. 235 f₂^1/2( straight joint) and f(2)tm,m= 0. 324 f₂^1/2( slot),and it provides a safety basis for the structural design.

Keyword：waste liquor of alcohol;bending strength;failure characteristic;porous brick;rectangular hole;