国家/地区 中国（4）
IPC部 B（4）
IPC大类 C04（4） B33（3） E01（2）
IPC小类 C04B（4）
IPC C04B028/06（4）
发明人
公开年 2021（3）
申请年 2021（4）
专利权人

Assembled semi-flexible asphalt concrete road bed block used for bearing and fixing sleeper to form road bed, has groove whose bottom part is embedded with bolt, where grooves in each channel bed base body and adjacent grooves in other channel bed base body jointly bear rail bearing.

PENG G, CHENG J, GONG M, DENG C, XIONG Z, ZHU X, CHU C, HONG J

Graphene oxide reinforced cement-based material used for three-dimensional printing comprises cement, modified quartz sand, fly ash, steel slag powder, white carbon black, water reducing agent, retarder and water.

LIANG Y

Nano-graphene concrete material useful for architectural 3 dimensional (3D) printing comprises e.g. cement, compact filling agent, thixotropic agent, accelerating agent, thickening and water retaining agent, antifoaming agent, and fiber.

DING H, HUANG M, NIE J, CAO B

Preparation of three-dimensionally printed cement noise reduction barrier involves preparing reinforced composite cement slurry using e.g. quartz sand, feeding into feed system for layer-by-layer printing, and assembling.

YUAN F