FRESH AND HARDENED PROPERTIES OF CONCRETE CONTAINING STEEL FIBRE FROM RECYCLED TIRE
DOI:
https://doi.org/10.11113/mjce.v25.15839Keywords:
fibre reinforced concrete, recycled tire, steel fibre, workability and strength.Abstract
This paper presents some results and discusses the feasibility of adding recycled steel fibre from scrap tires as reinforcement in concrete. A number of tests were conducted to investigate fresh and hardened state properties like slump, Vebe time, ultrasonic pulse velocity, compressive, tensile and flexural strength of recycled steel fibre reinforced concrete (RSFRC). The effect of incorporation of recycled steel fibre on various aspect ratios (l/d) of 45, 67 and 89, and volume fraction (Vf) of 0.5,1, 1.5 and 2% were experimentally investigated. Test specimens comprising of cube, cylinder and prism were prepared and tested after 1, 7 and 28 days of water curing. It has been found that the workability of RSFRC, in general, was reduced as the volume fraction of the fibre increased. The compressive strength and splitting tensile strength of RSFRC reached a maximum at l/d ratio of 67. In terms of volume, the compressive strength of RSFRC was not significantly increased by incorporation of recycled steel fibre. However, the tensile and flexural strength of RSFRC was remarkably improved with the increase of fibre content. The results obtained and the observation made in this study suggests that recycled steel from waste tires can successfully be used as fibre reinforcing material in concrete.References
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