<![CDATA[Indonesia faces a very deep complicated multi crisis. It has influenced the role of construction field development in this country. The concrete technology field, as the major material engineering field, must create a breakhtrough to cover the limited construction material that is cost higher and higher in every minutes. The innovation of concrete material, especially in fiber concrete, has developed by many researchers. Improving of local materials for fiber concrete, the materials of coconut fiber (coir) could be expected to become entrance gate to reach better future of public materials. The research conducted some experimental tests, with some concrete (mixed to coconut-fiber) cylinders specimens tested by splitting-tensile test. The volume of coconut fiber in concreteis 0.25%, the length of conconut-fiber vary with 40 mm, 60 mm, 80 mm, and 100 mm. Splitting-tensile test of specimens has performed good splitting-tensile stress of concrete. The research concluded : (1) The optimum value of split• ting-tensile stress of coconut-fiber concrete has reached by volume of25% variety with length 80 mm, (2) The coconut-fiber has given advantage in increasing the concrete performance that is avoiding the microcrack and giving a better splitting-tensile strength compared to normal concrete, (3) The performance of splitting-tensile stress of coconut fiber concrete increased by 13.62% compared to normal concrete]]>
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