国家/地区
IPC部 C（2）
IPC大类 C04（2）
IPC小类 C04B（2）
IPC C04B014/02（2）
发明人
公开年
申请年 2022（2）
专利权人

Inter-floor noise prevention system of house useful for preventing noise generated in upper floor from being transmitted to the lower floor, comprises sound absorbing plate installed on concrete slab, and sound wave vibration blocking plate.

HO S J

Preparation of plastic ultra-high performance concrete involves adding cement, quartz sand, mineral powder, nanometer silicon ash, water reducing agent, steel fiber, and sulfonated graphene uniformly mixing, adding water, and stirring.

LI S, ZHAO B, HU P, WANG S, DING X, ZHOU H, SHAO X