石家庄铁道学院建工系研制成功的 SEM 弥合剂,主要功能是赋予混凝土施工缝砂浆以膨胀特性,同时具有延缓水泥水化速度的作用。在水泥砂浆中掺入弥合剂后制成弥合剂砂浆替代橡胶止水带,防水可靠,可操作性强,是治理隧道衬砌、水池等混凝土施 SEM Institute of Engineering, Shijiazhuang Railway Institute successfully developed SEM agent, the main function is to give the concrete mortar joints expansion characteristics of expansion, while slowing the rate of cement hydration role. In the cement mortar mixing agent made after the agent into a mixture of mortar instead of rubber water stop, reliable waterproofing, maneuverability, is the treatment of tunnel lining, concrete tanks and other facilities