cemenowd ex-i is powdered material. the fineness is less than 10%; the specific weight is 2.90; non-toxic, non-odour; no ammonia, no chlorine. (1)making shrinkage compensated concrete, if the ratio of reinforcement is 0.2%-1.0%, the limited expansive rate will be in the range of 0.02-0.04%, and a prestress of 0.2-0.7mpa exists in the concrete. (2)for structural self-waterproofing construction. effectively preventing cracking or leakage of concrete. (3)to extend the space length of post casting zone of cast-in-place over length structure. (4)to control the crack producing result of temperature difference in large sized structural concrete. (5)for rigid roofing. (6) making non-shrinkage cements.