Conference Proceedings

Early age concrete creep: Using model B3 prediction

M Sofi, L Zhang, PA Mendis, D Baweja, S Fragomeni (ed.), S Venkatesan (ed.), NTK Lam (ed.), S Setunge (ed.)

INCORPORATING SUSTAINABLE PRACTICE IN MECHANICS OF STRUCTURES AND MATERIALS | CRC PRESS-TAYLOR & FRANCIS GROUP | Published : 2011

Abstract

Thermal and visco-elastic effects are more pronounced in early age concrete (1 to 7 days). This is due to the presence of free water and un-hydrated cementious particles. It is common practice to load the structural members during this time in order to meet the tight construction schedule. As a result, regions of high stress concentrations, such as anchorage zones in post-tensioned (PT) members, experience higher time dependent strains. This paper discusses the early age concrete effects and the predictions of early age creep strains using B3 model. A simple cylindrical specimen is considered for the analysis. © 2011 Taylor & Francis Group, London.