Faculty of Engineering

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    PublicationOpen Access
    Use of Natural Fibres to enhance tensile strength of concrete
    (ACADEMIC JOURNAL OF CIVIL ENGINEERING, 2017-07-21) Seneviratne, R.A.C.J; Tharmarajah, G; Archbold, p
    This paper discusses the influence of natural fibres on density, compressive strength and flexural strength of fibre reinforced concrete specimens. Coir fibre extracted from coconut husk was added to high strength concrete to produced 36 test cubes and 36 beam samples. Tests carried out on cube and beam samples show that compressive strength of high strength concrete reduces with addition of coir fibres. The reduction is noticed varying with the change of fibre content and fibre length. Further, comparison between cubes and beams indicate variation in density of the concrete as well. The test results show that a reduction in flexural strength in most cases except for 2% coir fibre reinforced concrete, where a slight enhancement was noticed in flexural strength.
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    PublicationOpen Access
    Experimental study On Addition of Pine Fibres to High Strength Concrete
    (researchgate.net, 2017-03) Seneviratne, R; Tharmarajah, G
    This study focuses on influence of pine fibres on unit weight, compressive strength and flexural strength of high strength concrete. Concrete mixes with 2%, 4% and 6% fibre content were produced while length of the fibres were varied from 10 mm to 40 mm. From the pine fibre reinforced mixes, 36 test cubes and 36 beam specimens were casted to identify the desired variations. Unit weight of the concrete showed significant variations in the test cubes. However, the variations of the unit weight observed in the beam specimens were low compared to the variations observed in test cubes. Compressive strength of the high strength concrete also reduced significantly with the addition of pine fibres. Also a reduction in flexural strength was observed. Variation of both compressive and flexural strength showed a relationship with the fibre content and fibre length as well.