ARCHING ACTION IN STEEL REINFORCED SELF-COMPACTING CONCRETE SLABS
Enhanced sustainability can be achieved through an integrated approach and by adopting innovations in technologies as well as by avoiding over-complex and high-energy-consuming solutions in design and construction. It has been recognised for some time that laterally restrained slabs exhibit strengths far in excess of those predicted by most design codes. This enhancement in slab strength is due to Compressive Membrane Action (CMA). Previous research has also shown that CMA has a beneficial influence on the service behaviour of laterally restrained slabs. Therefore, by utilising the benefits of energy saving and waste reducing self-compacting concrete (SCC) in combination with design using CMA, it should be possible to produce more economic and durable concrete slabs with improved whole life performance.This paper presents the results of laboratory tests on laterally restrained SCC slabs reinforced with steel bars. Arching action is generally governed by a compressive failure hence the main variable was the concrete compressive strength.Two types of supplementary materials limestone powder and ground granulated blast furnace slag were used in producing two grades of SCC. The failure loads of the slabs have been compared to predicted strengths using an arching theory developed at Queens University Belfast and with the UK Highways Agency Standard BD81/02 which came about as a result of this research.The arching theory has been extended to incorporate the properties of SCC.
Su E.Taylor Mohammed Sonebi David Kidd Will McCord
School of Planning, Architecture and Civil Engineering, Queens University of Belfast,Belfast, UK
国际会议
长沙
英文
676-686
2009-06-05（万方平台首次上网日期，不代表论文的发表时间）