陶砂替代石英砂制备活性粉末混凝土(RPC)的性能研究

doi:10.11896/cldb.21030192

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Abstract Reactive powder concrete (RPC) has high strength and high toughness, but its high weight limits its application in the field of urban transportation. In order to reduce its bulk density , lightweight and high-strength ceramic sand was used to replace the quartz sand in RPC, and its fluidity, apparent dry density, mechanical properties and microstructure were studied. The results show that the compressive strength of the specimen is 120.1 MPa and the flexural strength is 27.0 MPa when the replacement rate of ceramic sand is 30%, which can meet the mechanical performance requirements of RPC in the field of subway evacuation platforms and cover plates. The apparent dry density of ceramic sand RPC is 2 338 kg/m³, which is reduced by 12.1%, compared with the RPC without ceramic sand. At the same time, the flow property is significantly improved, and it has good toughness. The steel fiber, ceramic sand and RPC matrix are combined closely, and ceramic sand and RPC matrix have a good interface transition zone.

Key words： reactive powder concrete ceramic sand mechanical properties evacuation platform

Published: Online: 2022-05-24

CLC number:

TU528.31

Fund:Key Science and Technology Program of Shaanxi Province,China ( 2018SF-367).

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	Articles by authors
	ZHU Bo
	DUAN Feng
	HE Juan
	SHI Chen
	LIU Wenhuan

Cite this article:

ZHU Bo,DUAN Feng,HE Juan, et al. Performance of Reactive Powder Concrete (RPC) Prepared by Ceramic Sand Instead of Quartz Sand[J]. Materials Reports, 2022, 36(10): 21030192-5.

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http://www.mater-rep.com/EN/10.11896/cldb.21030192 OR http://www.mater-rep.com/EN/Y2022/V36/I10/21030192

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