A B S T R A C T R I~ S U M I~This paper describes a new model for predicting crack width in presence of different percentages of reinforcement and concrete strength classes that became from 30 to 80 MPa.The theoretical analysis is used to interpret the results of experimental trials on reinforced concrete ties submitted to tensile forces without inducing any yield in the bar.The purpose of the investigation was to study and predict the crack width using as base parameters the stress in the steel at crack and the mean distance between cracks. The calculation model is based also on a precise mechanical characterization of the concrete's effective tensile strength (i.e. in presence of reinforcement) and give a sufficiently user friendly procedure to determine crack width without taking into account the concrete and steel deformation, which are difficult to measure.
Cet article prdsente un nouveau module de prdvision de l'amplitude des fissures en prdsence de diff&ents pourcentages d'armatures et de classe de rdsistance allant de
R I~ S U M EThis study proposes a model for calculating the ave> age width of cracks in reinforced concrete (RC) elements using non metallic reinforcement bars (FP-,P). This model has already been applied to the case of steel reinforcing bars successfully. It considers the influence of the percentage of reinforcement and the concrete strength. It emphasizes how the mechanical features of FRP (fiber reinforced polymer) bars, and particularly their modulus of elasticity, can affect the crack width. The model is validated with experimental results available in the literature. An example of its application for the calculation of the crack width is shown.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.