Experimental and theoretical evaluation of punching strength of steel fiber reinforced concrete slabs
2017; Wiley; Volume: 19; Issue: 1 Linguagem: Inglês
10.1002/suco.201700136
ISSN1751-7648
AutoresNuno D. Gouveia, Massimo Lapi, Maurizio Orlando, Duarte M.V. Faria, António Manuel Pinho Ramos,
Tópico(s)Innovative concrete reinforcement materials
ResumoThis paper deals with the experimental and theoretical evaluation of punching shear capacity of steel fiber reinforced concrete (SFRC) slab–column connections. Five experimental specimens with a thickness of 160 mm, different fiber volume contents (0, 1.0, and 1.5%) and different flexural reinforcement ratios (0.75 and 1.5%) have been tested. The experimental results were evaluated using a physical–mechanical model based on the critical shear crack theory (CSCT). The model has given a good approximation of experimental punching shear strengths. In general, tests have highlighted a significant increase in load and deformation capacity of fiber reinforced concrete slab–column connections in comparison with reinforced concrete connections.
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