Impact Load Test on Conventional and Roller Compactor Steel Fiber Reinforced Concrete Pavement

摘要

The effect of compaction method on steel fiber reinforced concrete pavement (SFRC) has been simulated in this study, a locally manufactured steel roller compactor is designed to simulate steel roller compactor which is commonly used in site for compaction. 0.8 % volume fraction (Vf) of steel fiber content is used and compacted using roller compactor in three cases category, case 1: load 10 kg and no. of cycles are 8, 16, 24 cycles. Case 2: initial stage: load 10 kg and no. of cycles are 4, 8, 12 cycles and finial stage: load 25 kg and no. of cycles are 4, 8, 12 and finally Case 3: load 25 kg and no. of cycles are 8, 16, 24 cycles. The obtained beam specimens were tested using a locally manufactured impact load apparatus and test results has been compared with steel fiber reinforced concrete beam specimens compacted using conventional compaction method. Test results show that the optimum steel fiber roller compacted concrete beam specimen under impact load test gives 17 blows for first crack and 173 blows for failure while steel fiber reinforced concrete beam specimen compacted using conventional method gives 15 blows for first crack and 110 blows for failure. Material properties have also been improved when using roller compactor by about 9.74%, 8.84% and 4.76% for compression strength, tensile strength and modulus of elasticity respectively.