Experimental Study on Mechanical Properties of RPC-FST under Direct Tension Load

Author(s): Wenjin Huang, Zhengbin Zhang, Qingwei Huang, Zheng Ying, Baochun Chen
Paper category: Proceedings
Book title: 1st International Conference on UHPC Materials and Structures
Editor(s): Caijun Shi and Dehui Wang
ISBN: 978-2-35158-164-3
e-ISBN: 978-2-35158-165-O
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 238-248
Total Pages: 11
Language: English

Abstract: Due to low tensile strength and ductility of conventional concrete, concrete-filled steel tubular (CFST) structures have limited application for tension even bending. In order to explore the full function of CFST tension members like chord of CFST truss girder, a mix proportion of reactive powder concrete (RPC) from ordinary materials was created and a series of direct
tension tests of reactive powder concrete-filled steel tubular (RPC-FST) members with different steel fiber admixture and curing regimes, were conducted. By comparing sectional resistances and axial rigidities of RPC-FST specimens with RPC as well as steel tube counterparts, a structural design method based on the formulas for conventional CFST tension member was discussed. It was shown from the test that RPC-FST composed of local materials had excellent tensile resistance, axial rigidity and ductility that met the structural requirements for CFST tension members in bridge engineering. The proposed practical algorithms well predict sectional resistances and axial rigidities of RPC-FST in tension.

Online publication: 2016
Publication type : full_text
Public price (Euros): 0.00