Abstract Increasing bond between bamboo and concrete is one of the important concerns in using bamboo as reinforcement. Among many different reasons for concrete elements rupture that have been reinforced by bamboo, concrete cover rupture and bond failure could be considered as two important causes. In this paper, bamboo corrugation as a new method has been proposed. Bamboo corrugation has been suggested as a mechanism to interlock bamboo and concrete in order to assist the cohesion and skin friction and increase the total bond. Because of remarkable difference between steel shear strength and longitudinal shear strength of bamboo, the interlock mechanism is different. First, the relation between parameters like bamboo longitudinal shear strength, concrete shear strength and the kind of coating or treating of bamboo has been investigated. Then, the proper shape of bamboo corrugation (relation between size, depth and space between dents) can be obtained. Using corrugated bamboo strip can improve bond between these two materials even bamboo strips have not been treated.

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