... flyash ,cement , lime ,gypsum and aluminum powder ,two is sand ,cement ,lime ,gypsum and aluminum powder.3.working process ... into autoclave through windlass machine8. in the autoclave ,sand will be 10-11 hours and flyash will be ... is 1.5-2.5hours(Flyash)2.5-4hours(Sand), temperature 40-50 degree, after curing body strength ... in autoclave cycle time, flyash 7-8 hours,sand 10-11hours,the pressure is 1.1-1. ...