Title : EFFECT OF W/P RATIO ON HIGH STRENGTH SELF COMPACTING FIBER REINFORCED CONCRETE
Authors : B. Narendra Kumar1 and P. Srinivasa Rao2
Publication : 23 - 26 October 2013
Volume :
Pages :
Price : 250
Abstract : The paper presents properties of high-strength concrete of grade M80 with varying water-powder ratio. The material used in the present study include OPC 53 grade cement, quartz powder, micro silica, quartz sand, hooked end steel fibers of length 30 mm, 0.5 mm dia and 10 mm size granite aggregate. Cement has been replaced partially with an optimized 45% of quartz powder in cement content and optimized 1.5% of fibers in powder content, and river sand is completely replaced with quartz sand and variation of W/P ratio in 7 different ratios viz., 0.29, 0.28, 0.27, 0.26, 0.25, 0.24 and 0.23. An attempt has been made to achieve sellf compatibility on concrete with different admixtures by using mix design procedure suggested by Nan-Su et al. The flow characteristics such as flow ability, passing ability and resistance to segregation have been tested using slump flow, L-Box, V-Funnel. It was observed that the optimum water-powder ratio for high-strength self compacting fiber-reinforced concrete (HSSCFRC) was 0.24 and the properties of hardened concrete like compressive strength, flexural strength and splittensile strength were also studied at 7 days and 28 days.