Abstract
This work investigated the structural strength of concrete column reinforced with bamboo strips. Experimental work includes load capacity test, deflection and failure patterns observation of eighteen concrete columns. Varying bamboo, from 4No to 12No, strips of coated seasoned bamboo of cross-section 8x10mm, were used to reinforce the concrete columns. Three other samples of column were reinforced with four length of 12mm high yield steel while the remaining was plain concrete, which served as controls. The results showed that the load carrying capacity of the column increased with increase in percentage of bamboo strip reinforcement but the increase is not proportional to the percentage of reinforcement. There was also improved post cracking ability of the concrete due to the bamboo inclusion but not as pronounced in steel reinforced column. However, all columns failed in a similar pattern due to crushing of concrete. The bamboo strips showed no sign of slippage and remain unaffected even after concrete failure.
Highlights
Building with bamboo looks back on an ancient tradition in the regions in which the plant grows in abundance, such as in South America, Africa and, in particular, South-East Asia.Bamboo attains its greatest strength after three years, when it assumes a brownish colour
The results showed that the bamboo tensile strength is comparable with the best woods used in construction and even with steel
This paper reports an experimental investigation on the suitability of bamboo strips as reinforcement in normal concrete column, as there is little information on the subject and taking into cognizance the need to improve bond between concrete and bamboo interface
Summary
Building with bamboo looks back on an ancient tradition in the regions in which the plant grows in abundance, such as in South America, Africa and, in particular, South-East Asia.Bamboo attains its greatest strength after three years, when it assumes a brownish colour. Specimens with a node at the loading point, in static bending tests, show a higher strength but lower stiffness than those having the load points between nodes. Yu et al (2008) concluded that the mean longitudinal tensile strength of bamboo ranged from 115 to 309 MPa. Specimens with a node at the loading point, in static bending tests, show a higher strength but lower stiffness than those having the load points between nodes. Yu et al (2008) concluded that the mean longitudinal tensile strength of bamboo ranged from 115 to 309 MPa These values compared favourably with that of steel of 250 - 500N/mm. 60 cycles of wetting and drying in solution of calcium hydroxide and tap water did not decrease the bamboo tensile strength as well as the Young’s modulus, attesting to the durability of in the aggressive tests
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