Determination of the Tensile Strength of Different Fiber Reinforced Concrete Mixtures

2016-09-21
Enhancing the tensile performance of concrete is the main advantage when fibers are added to this type of building materials. This improvement is usually measured through indirect methods like bending or split-tensile tests, in a way similar to normal concrete due to the absence of a standard tensile test for such purpose. Naturally, this type of tests does not determine the real tensile strength of the fiber reinforced concrete. Hence an important parameter, that is needed in modelling and designing processes, is not calculated correctly, the thing that makes developing new mixtures rely on indirect results. This work has two goals. The first one, is to develop new mixtures with fiber contents two and three times higher than the normal. The second one is to evaluate the performance of these different fiber reinforced concrete mixtures under direct tension by using a cylindrical dog bone specimen. This rounded specimen helps to minimize the problems of stress concentration and specimen crushing at the gripping area. A variation of polypropylene, polyvinyl alcohol and steel fibers with a length up to 30 mm will be used in dosages of 2, 4 and 6% by volume to produce the different concrete mixtures. Cylindrical and beam specimens will be casted to measure the compressive and flexural strength respectively. Dog bone specimens will be used to determine the tensile strength of the fiber reinforced concrete mixtures. The results of the flexural and tensile tests will be compared to each other to find any correlation between the two test. At the end of the work, the test results are expected to optimize the fiber amount and type needed for highest tensile performance of the developed fiber reinforced concrete mixtures.
12 th International Congress on Civil Engineering

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Citation Formats
M. K. Ardoğa, B. Alam, and İ. Ö. Yaman, “Determination of the Tensile Strength of Different Fiber Reinforced Concrete Mixtures,” presented at the 12 th International Congress on Civil Engineering, İstanbul, Türkiye, 2016, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/79753.