Abstract
Different types of natural coarse aggregate are available in the local market of Bangladesh, which are primarily imported from several regions of the neighboring country, India. This paper aims to find the best locally available natural coarse aggregate for concrete preparation in terms of mechanical strength. It also reports on the results of an experiment investigation that looked at the effects of six different types of natural coarse aggregate, namely Burimari, Bhurungamari, Bholaganj, Tamabil, Jaflong and Dinajpur Hili (Indian Black Stone), available in the local market of Bangladesh on the mechanical properties of concrete. Concrete cylindrical specimens of 100mm diameter were prepared by each type of natural coarse aggregate keeping other ingredients constant. Concrete mix ratio and water/cement ratio adopted for the study were 1:1.5:3 and 0.48, respectively. The Compressive strength, splitting tensile strength and modulus of elasticity were investigated at 7, 14 and 28 days of curing age. The obtained results showed Dinajpur Hili (Indian Black Stone) is most suitable for concreting having distinguished variation in compressive strength, splitting tensile strength and modulus of elasticity compared to other types of natural coarse aggregates used in the research.
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More From: International Journal of Engineering and Advanced Technology
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