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Experimental and theoretical behavior of crack spacing of specimens subjected to axial tension and bending
Author(s) -
Naotunna Chavin N.,
Samarakoon Samindi M. K.,
Fosså Kjell T.
Publication year - 2021
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201900587
Subject(s) - eurocode , structural engineering , cracking , bending , slip (aerodynamics) , tension (geology) , fracture mechanics , reinforced concrete , experimental data , materials science , ultimate tensile strength , engineering , composite material , mathematics , statistics , aerospace engineering
Crack spacing has been identified as an important parameter in predicting the crack widths in reinforced concrete (RC) structures. An experimental program has been conducted to investigate the crack spacings when reinforced concrete beams are subjected to both axial tension and flexure. The stochastic nature of cracking behavior makes the experimental program complicated. A large sample size of the crack spacing data was recorded, in order to give a statistical overview. Recent studies in the literature were used to verify the experimental results. The existing crack spacing prediction models have been developed based on different theoretical approaches, namely bond‐slip, no‐slip, and combined approaches. In this study, Eurocode 2, Model Code 2010, Japanese Code, Eurocode 2 with German Annex and Beeby's crack spacing models were selected, as they represent each theoretical approach. Experimental results of this study and from selected literature were compared with the aforementioned prediction models. Japanese Code gave better predictions for axial tensile tests. For the four‐point bending test, all the calculation models gave good agreement with the results, except for Eurocode 2 with German Annex.