fly ash bricks;  masonry structures;  Compressive strength

In recent years, many literature has done a lot of research on the application of fly ash materials, but none of them have studied non-autoclaved load-bearing fly ash bricks. Through the compressive test of 3 groups of 30 standard specimens built with non-autoclaved fly ash bricks, the crack development characteristics and deformation law of non-autoclaved fly ash brick masonry were discussed, and the compressive strength calculation formula was established according to the compressive test results of 30 specimens. The results show that compared with ordinary brick masonry, the new building material has similar crack development characteristics and similar ultimate load, and can be used as a new load-bearing wall material to replace clay brick.