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A platform for research: civil engineering, architecture and urbanism
A Kind of Green High Performance Concrete
The invention discloses a kind of green high performance concrete (HPC), belonging to the technical field of building materials. The ultra-high performance concrete (UHPC) in the present invention comprises the following raw materials in percentage by weight: 33-35% of cement, 12-15% of steel slag powder, 3-5% of composite expansive agent, 18-20% of micro nano active admixture, 8-10% of silica fume, 18-20% of quartz sand, 1.6-1.8% of waterreducer and 1.8-2% of steel fiber. Specifically, the micro-nano active admixture is a mixture of silicon rich iron tailings, slag, fly ash and quartz powder in a mass ratio of 44:22:28:6. The UHPC of the invention has good working performance, wherein, under standard curing conditions, the flexural strength can reach 25.6MPa, compressive strength can reach 142MPa, and elastic modulus can reach 52.4GPa, respectively. Besides, the adiabatic temperature rise is only 59.7 C and the drying shrinkage rate in 180d is only 280x106.
A Kind of Green High Performance Concrete
The invention discloses a kind of green high performance concrete (HPC), belonging to the technical field of building materials. The ultra-high performance concrete (UHPC) in the present invention comprises the following raw materials in percentage by weight: 33-35% of cement, 12-15% of steel slag powder, 3-5% of composite expansive agent, 18-20% of micro nano active admixture, 8-10% of silica fume, 18-20% of quartz sand, 1.6-1.8% of waterreducer and 1.8-2% of steel fiber. Specifically, the micro-nano active admixture is a mixture of silicon rich iron tailings, slag, fly ash and quartz powder in a mass ratio of 44:22:28:6. The UHPC of the invention has good working performance, wherein, under standard curing conditions, the flexural strength can reach 25.6MPa, compressive strength can reach 142MPa, and elastic modulus can reach 52.4GPa, respectively. Besides, the adiabatic temperature rise is only 59.7 C and the drying shrinkage rate in 180d is only 280x106.
A Kind of Green High Performance Concrete
WU XIANGUO (author) / WANG HONGTAO (author) / LIU QIAN (author) / DENG TINGTING (author) / ZHAO RIXU (author) / ZHU HAIJUN (author) / ZHANG LIMAO (author) / CHEN BIN (author) / CHEN HONGYU (author) / WANG HONGSHENG (author)
2021-06-03
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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