Compressive Strength of Bamboo Column with Concrete Inside: Experimental Study

In tropical countries such as Vietnam, the demand for bamboo as building materials is increasing, especially for environmentally friendly structures. In this study, the high strength concrete was pouring inside bamboo culms, which bamboo’s knots were drilled by a drilling system. In addition, a concrete-pouring and a multi-level compressing system were designed for casting concrete into long-small hole of bamboo culms and for carrying out experiments on sample with various lengths. About 32 experiments were performed Also, the bamboo concrete samples show much higher ultimate load than concrete column samples. A good corelation between the slenderness ratio of sample and the ultimate load of that sample, that the engineers can rapidly define the ultimate bearing capacity based on the general properties of bamboo culms.