Effect of the lateral reinforcement of bamboo on crushing strength of bamboo reinforced concrete pipe

Abstract

The objectives of this research is to study the effect of compressive strength of concrete and amount of lateral reinforcement of bamboo on crushing strength of bamboo reinforced concrete pipe (BRCP). The 40 cm diameter concrete pipe according to Thai industrial standard TIS.128-2549 (the 3rd class) is used in this study. The compressive strengths of concrete are 250 and 300 kg/cm2. The lateral reinforcement of bamboo is used in the range between 4-8 rods. From the test results, it was shown that the BRCP making from the 250 kg/cm2 compressive strength of concrete and using the amount of bamboo at 6, 7 and 8 rods have the crushing strength at 4,908 5,090 and 5,271 kg, respectively. The test result of the BRCP making from the 300 kg/cm2 compressive strength of concrete and using the amount of bamboo at 4, 5 and 6 rods have the crushing strength at 5,141 5,193 and 5,374 kg, respectively. The test results showed that all mixes passed the industrial standard of the crushing strength of the 3rd class reinforced concrete pipe 128-2549 with the pipe’s size 40 mm which was determined that it should be endured the crushing strength not less than 2,650 kg. It could be concluded that the crushing strength would increase according to the increasing of the lateral reinforcement of bamboo and the compressive strength of concrete.