| Title |
An Experimental Study on Shear Behavior of Steel Fiber-Reinforced Ultra High Performance Concrete Beams |
| Authors |
양인환(Yang, In Hwan) ; 조창빈(Joh, Changbin) ; 이정우(Lee, Jung Woo) ; 김병석(Kim, Byung Seok) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.1A.055 |
| Keywords |
강섬유;초고성능 콘크리트;균열;처짐;전단 강도 steel fiber;ultra high performance concrete;crack;deflection;shear strength |
| Abstract |
Experimental investigation on the structural behavior of steel fiber-reinforced ultra high performance concrete (UHPC) beams subjected to shear are presented. Six tests carried out on simply supported I-beams under concentrated loads are presented. The parameters varied were the volume fraction of the fibers (1.0, 1.5 and 2.0%) and shear span-effective depth ratio (2.5, 3.4). The test results indicated that ultimate shear strength increased with increasing fiber volume, and that ultimate shear strength decreased with increasing shear span-effective depth ratio. In addition, applicability of predictive equations for evaluating the ultimate shear strength of steel fiber-reinforced UHPC beams are estimated based on the test results. The comparison between computed values and the experimentally observed values are shown to validate the proposed theoretical equations. It is found that predictions by using AFGC and JSCE recommendations provide the most accurate estimates of shear strength of steel fiber-reinforced UHPC beams. |