国家/地区 中国（2）
IPC部 C（2）
IPC大类 C04（2）
IPC小类 C04B（2）
IPC C04B020/02（2）
发明人
公开年
申请年
专利权人

Active powder concrete for tunnel construction and maintenance and strengthening, comprises common silicate cement, superfine mineral powder, silicon ash, fly ash, expansion agent, sand, carbon black.

GU Z

Preparation of nano-micron multistage composite glass fiber, involves preparing graphene oxide solid by Hummers method, adding polydiallyldimethylammonium chloride, adding graphene-modified glass fiber to potassium permanganate.

ZHANG L, ZHANG Y, QIAN Y, LIU D, ZHANG J, ZHANG Z, GE S, YU J