Influence of type of loading (tension or bending) on cracking behaviour of reinforced concrete elements. Experimental study

摘要

This article describes an experimental program aimed at studying influence of type of loading (tension or bending) on the cracking behavior of reinforced concrete elements. The effect of other parameters like concrete cover and ratio between diameter and effective reinforcement ratio (phi/rho(s,) (ef)) is also studied. In addition, the effect of casting position (bond) on crack spacing is discussed. The experimental program was conceived in order to compare the results obtained for crack width and crack spacing for bending and tension and was inspired by the differences on this point between the formulations of Eurocode 2 EN1992-1-1:2010 and Model Code 2010. New revisions of EC2 and Model Code are currently under way, and this study seeks to contribute to the ongoing discussion.