Effect of Synthetic Hair Fibre Additions on the Strength Characteristics of Concrete
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Department of Civil Engineering, Unilorin, Nigeria
Extensive research has been carried out on the use of different kinds of fibres to improve the characteristics of construction materials. However, literature is scarce on the use of synthetic hair fibre for similar purposes. In this study, effect of synthetic hair fibre addition on the strength of concrete was examined. The synthetic hair fibres were added to the concrete in various percentages by mass of cement from 0% to 6% in intervals of 2%. The impacts of the fibre addition on the workability of concrete were investigated through slump and compacting factor tests. The compressive strength, split tensile strength and density tests were also conducted on each of the test specimens after 7, 14, 21 and 28 days curing, respectively. The results obtained from both the slump and compacting factor tests showed that the workability increased with the addition of fibres with compacting factor and slump increasing from 0.86 to 0.9 and 17 to 25 mm respectively. The fibre additions also increased the compressive and split tensile strengths with increasing days of curing from 0% to 2% but decreased for higher hair fibre contents with days of curing. It was also observed from the results that the density of concrete at 28days decreased with increase in hair contents. Based on this study, addition of 2% hair fibre by weight of the cement is therefore recommended as the optimum value for improving the compressive and tensile strength of the concrete.
Synthetic hair fibre , Concrete , Workability , Split tensile strength , Compressive strength , Density , Research Subject Categories::TECHNOLOGY
Adedokun, S. I., Ajamu, S. O. and Aderinto, H. O. (2016). “Effect of Synthetic Hair Fibre Additions on the Strength Characteristics of Concrete”, USEP: Journal of Research in Civil Engineering (RICE), Vol. 13, (2):928-939.