... , stone dust and others ) ,through making the material small for example sand,they can be used directly if has enough ... the light brick . the porous rate is 70-80%. 3. Advantages light weight Areated concrete density is usually 400-700kg ... m3,(according the market ti produce ),same as 1/3 of clay brick and 1/5 common concrete.So ... save burning clay brick 5 mu . Good tilting table machine for AAC plants