Tests of concrete slabs reinforced with CFRP prestressed prisms

Jiongfeng Liang, Deng Yu, Zeping Yang and Xinjun Chai

Abstract

This paper reports the testing of concrete slabs reinforced with CFRP prestressed concrete prisms(PCP) on the flexural behavior. Four concrete slabs were tested, a reference slab reinforced with steel bars, and three slabs reinforced with CFRP prestressed concrete prisms (PCP). All slabs were made with dimensions of 600mm in width, 2200mm in length and 150 in depth. All concrete slabs reinforced with CFRP prestressed concrete prisms(PCP) exhibited CFRP bar rupture failure mode. It was shown that the application of the CFRP prestressed prisms can limit service load deflections and crack width, the increased level of prestress in the CFRP prestressed prism positively affected the maximum crack width. The deflection of concrete slabs reinforced with CFRP prestressed prisms decreased as prestress in the CFRP prestressed prism increased.

Key Words

test; slabs; CFRP; deflection; crack width

Address

Jiongfeng Liang: State Key Laboratory Breeding Base of Nuclear Resources and Environment, Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, Nanchang, P.R.China Zeping Yang and Xinjun Chai: Faculty of Civil&Architecture Engineering, East China Institute of Technology, Nanchang, P.R.China Deng Yu: College of Civil and Architecture Engineering, Guangxi University of Science and Technology, Liuzhou, P.R.China

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