Shrinkage behaviour of SFRC industrial ground floors.
Sabbagh, Alireza Bagheri
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JAFARIFAR, N. and SABBAGH, A.B. 2015. Shrinkage behaviour of SFRC industrial ground floors. In the Proceedings of the 35th Cement and concrete science conference (CCSC35), 26-28 August 2015, Aberdeen, UK.
Restrained shrinkage is an important issue in design of concrete industrial ground floors, although it is often overlooked. This paper studies shrinkage behaviour of a SFRC floor subjected to static racking load, through FE simulation. The ultimate load bearing capacity and cracking of the floor is assessed. It is shown that shortly-spaced surface micro-cracks are formed due to shrinkage. These cracks are not initially visible, but get longer and wider after loading. As a result, the load-carrying capacity of the floor reduces significantly, and the equivalent crack opening by up to 10 times.