Enhancement the Strength of Fly Ash Concrete by using Hybrid Fibers
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 5
Abstract
These fibers have been used in different percentages and the cement in concrete is replaced by 50% class f flyash. Steel fibers are added in the order of 0.5%& 1% polypropylene fibers are added in the order of the 0.5% & 0.75% and the basalt fibers are added in the order of 0.5% 0.75% and 1% by volume of concrete and the mix designs were formulated and specimens were cast and tested for computing compressive strengths indirect tensile strengths and flexural strengths at various periods from 3 to 56 days. In the experiments, hybrid fiber reinforced high volume flyash concrete results were compared with the individual fibers which provided good results. Test results show that improvement in strength of flyash concrete with hybrid fiber reinforcement (1%steel fiber 0.75% polypropylene fiber and 0.75% basalt fiber) can be quite significant as compared to that of individual fibers and other hybrid fiber combinations. In the experiments, while using maximum percentages of fibers in hybrid combination (by adding steel fiber, polypropylene fiber and basalt fiber together) in a mix, workability is slightly affected and this paper has identified that using hybrid fibers in high volume flyash concrete gives rise to enhanced strength characteristics. It is observed that workability is affected when fiber percentages exceed 1% limit by volume of concrete.
Authors and Affiliations
Shubhra Seth, Mr. V. S. Parihar
Keywords
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