Sadoon Abdallah and Mizi Fan and Xiangming Zhou
Effect of HookedEnd Steel Fibres Geometry on PullOut Behaviour of UltraHigh Performance Concrete
1599 - 1604
2016
10
12
International Journal of Civil and Environmental Engineering
https://publications.waset.org/pdf/10006005
https://publications.waset.org/vol/120
World Academy of Science, Engineering and Technology
In this study, a comprehensive approach has been adopted to examine in detail the effect of various hook geometries on bondslip characteristics. Extensive single fibre pullout tests on ultrahigh performance matrix with three different WB ratios and embedded lengths have been carried out. Test results showed that the mechanical deformation of fibre hook is the main mechanism governing the pullout behaviour. Furthermore, the quantitative analyses have been completed to compare the hook design contribution of 3D, 4D and 5D fibres to assess overall pullout behaviour. It was also revealed that there is a strong relationship between the magnitude of hook contribution and WB ratio (i.e. matrix strength). Reducing the WB ratio from 0.20 to 0.11 greatly optimizes the interfacial transition zone (ITZ) and enables better mobilization, straightening of the hook and results in bondsliphardening behaviour.
Open Science Index 120, 2016