Techno Press

Steel and Composite Structures   Volume 19, Number 4, October 2015, pages 843-860
Static push-out test on steel and recycled tire rubber-filled concrete composite beams
Qing-Hua Han, Jie Xu, Ying Xing and Zi-Lin Li

Abstract     [Full Text]
    Recycled tire rubber-filled concrete (RRFC) is employed into the steel-concrete composite structures due to its good ductility and crack resistance. Push-out tests were conducted to investigate the static behavior of steel and rubber-filled concrete composite beam with different rubber mixed concrete and studs. The results of the experimental investigations show that large studs lead a higher ultimate strength but worse ductility in normal concrete. Rubber particles in RRFC were shown to have little effect on shear strength when the compressive strength was equal to that of normal concrete, but can have a better ductility for studs in rubber-filled concrete. This improvement is more obvious for the composite beam with large stud to make good use of the high strength. Besides that the uplift of concrete slabs can be increased and the quantity and width of cracks can be reduced by RRFC efficiently. Based on the test result, a modified empirical equation of ultimate slip was proposed to take not only the compressive strength, but also the ductility of the concrete into consideration.
Key Words
    recycled tire rubber-filled concrete; steel-concrete composite beam; push-out test; large studs
(1) Qing-Hua Han, Jie Xu, Ying Xing, Zi-Lin Li:
School of Civil Engineering, Tianjin University, Tianjin 300072, China;
(2) Qing-Hua Han, Jie Xu:
Key Laboratory of Coast Civil Structure Safety, Tianjin University, Ministry of Education, Tianjin 300072, China;
(3) Zi-Lin Li:
School of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China.

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