Authors : Salahaldein Alsadey, Abdelnaser Omran and Otman M. M. Elbasir
Abstract: Concrete show many advantages related mechanical characteristics and economic parts of the construction, the brittle behaviour of the material remains a big impediment for the seismic and other implementations where flexible behaviour is basically required. The study examines the utilize of dune sand as fine aggregate in concrete and reinforced with polypropylene fiber to developed properties of concrete. In the present study the mix design of grade M25 (1:2:4) with W/C = 0.6 was calculated to prepare the concrete samples for the various proportion of polypropylene fiber such as (0, 1, 1.5 and 2%). In each case, the cubes compressive strength test was conducted. The results of the study show that the compressive strength properties of concrete utilizing dune sand improved by polypropylene fiber reinforced. The experimental results show that 1% content of polypropylene fiber slightly increase the compressive strength but obviously enhances the toughness index for the concrete, consequently it plays a role of improving toughness in concrete. The study has shown that dune sand can be used as economic and readily available alternative to sea sand and can therefore help to arrest the detrimental effects on the environment caused due to excessive mining of sea sand. Finally, the results of samples of various percentages of polypropylene fibers in concrete have been compared and the result of the study is explained.
Salahaldein Alsadey, Abdelnaser Omran and Otman M. M. Elbasir, 2021. Compressive Strength of Dune Sand Reinforced Concrete. Journal of Engineering and Applied Sciences, 16: 54-57.