... , ≥35%. (3). Aluminium powder: activated aluminium content, ≥90%.(4). Cement: 32.5R bulk cement. (5). Fly ash: carbon content, less than 3%; (6). Sand ... .Main technical data:(1). Finished products: 600KG/m3;(2). Proportion: cement, 8%; Quicklime, 19%; sand, 70%; Gypsum, 3%; aluminium powder, 450g ...