Print Email Facebook Twitter Time-dependent behavior of cracked concrete beams under sustained loading Title Time-dependent behavior of cracked concrete beams under sustained loading Author Sarkhosh, R. Walraven, J.C. Den Uijl, J.A. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2013-03-10 Abstract Under sustained loading, the propagation of cracks in concrete is assumed to be related to the elastic deformation, material parameters and time. Based on the fictitious crack model (FCM), a finite element method is proposed to explain the behavior of cracks in time using current constitutive relations to approximate the time-dependent crack strain. Experiments have been performed on small concrete specimens to determine the cracking strain and to validate the finite element model. For flexural cracks, a creep coefficient model is adopted for bulk creep and a cracking strain rate based on test results is employed. For shear cracks fracture mode II is considered as well. The development of concrete strength in time is taken into account. The model is applied to predict the behavior of a cracked concrete beam subjected to sustained loading. Finally a comparison is made between the results of different approaches. Subject time-dependent fractureconcrete beamcrack To reference this document use: http://resolver.tudelft.nl/uuid:e085a7b1-134b-4213-b64d-591c3dd50b32 Publisher Cimne ISBN 978-84-941004-0-6 Source FraMCos-8: Proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures, Toledo, Spain, 10-14 March 2013 Part of collection Institutional Repository Document type conference paper Rights (c) 2013 The Author(s) Files PDF Sarkhosh_2013.pdf 700.49 KB Close viewer /islandora/object/uuid:e085a7b1-134b-4213-b64d-591c3dd50b32/datastream/OBJ/view