Study on Mechanical Properties of Bamboo Fiber Reinforced Concrete
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Date
2017-04
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Addis Ababa University
Abstract
Bamboo is a plant which is abundant in Ethiopia. About 67% of African Bamboo resources and more than 7% of the world’s total bamboos are found in Ethiopia [14,17]. Bamboo is renewable and eco-friendly, as it consumes Nitrogen which could be a part of huge effort to prevent air pollution. This plant grows and reaches its maximum strength in just few years. A fiber of Bamboo is a natural fiber which serves to reinforce concrete materials and improves strength parameters of a concrete.
In this specific research, bamboo fibers were used as a reinforcing constituent material in production of fiber reinforced concrete. The experiments were performed on C-25 grade of concrete having target mean strength of 38.12MPa, water cement ratio of 0.59 and slump in the range of 30-60mm. Compressive strength, Flexural strength and Split tensile strength for 0%, 0.10%, 0.20% and 0.30% additions of bamboo fiber by weight of concrete were tested and compared with a plain concrete.
The standard 150mm cube compressive strength of BFRC with 0.10% and 0.20% addition of bamboo fiber by weight of concrete have showed an increment of 30.58% and 17.34% respectively. Whereas BFRC with 0.30% addition of bamboo fiber by weight of concrete showed a compressive strength reduction of 2.92% compared to plain concrete.
BFRC with 0.10% and 0.20% bamboo fiber addition by weight of concrete showed an increment in mean split tensile strength of 4.7% and 0.54% respectively; whereas 0.30% additions of bamboo fiber by weight of concrete showed split tensile strength reduction of 17.56% compared to plain concrete.
Mean Flexural strength of BFRC with 0.10%, 0.20% and 0.30% addition of bamboo fiber by weight of concrete has showed an increment by 3.57%, 4.84% and 6.77% compared to plain concrete respectively.
A slump test for BFRC reveals slump reductions of 41.67% for M1 and M2 and 50% reduction for M3 compared to the reference plain concrete. Slump results for all mixes with BFRC were within the range of the slump in mix design. Fresh concrete densities for M1, M2 and M3 also showed a slight reduction of 0.98%, 1.15% and 1.79% respectively.
Keywords: Bamboo, Fiber, Concrete, Reinforced Concrete, Mechanical properties
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Keywords
Bamboo, Fiber, Concrete, Reinforced Concrete, Mechanical properties