An Experimental Investigation on Usage of Quarry Dust as a Partial Replacement of Sand in Concrete

Guru Prasad Sharma
Assistant Professor, Department of Civil Engineering, Sikkim Manipal Institute of Technology, Majitar, India , IN

Dinchen Theingh
Assistant Professor, Department of Civil Engineering, Sikkim Manipal Institute of Technology, Majitar, India , IN

Meerak Hang Subba
Assistant Professor, Department of Civil Engineering, Sikkim Manipal Institute of Technology, Majitar, India , IN

Sanyam Mittal
Assistant Professor, Department of Civil Engineering, Sikkim Manipal Institute of Technology, Majitar, India , IN

Keywords: Concrete, quarry dust, natural sand, compressive strength, water-cement ratio, mix proportioning.

Abstract

The use of concrete in the field of construction has been increased to its highest level. This sharp rise in the use of former has led to reduction in the sources of natural sand. So, in order to cope up with this rising problem the need for use of alternative materials is necessary. For instance, quarry dust, crumb rubber powder, etc. This experimental study presents the use of quarry dust as a partial replacement of sand. The attempts have been made to study the variation in the strength of concrete when replacement of sand is done by quarry dust from 0% to 50% in terms of 10% interval. The concrete cubes of M25 grade has been casted and taken under study. The mix proportioning has been done as per IS 10262:2009, keeping constant water-cement ratio of 0.40. The tests for
compressive strength of cubes have been done at the ages of 7 and 28 days and were obtained at room temperature. The experimental study have shown that there is considerable increase in 28 days compressive strength marked for 50% replacement of sand by quarry dust and also for 20% replacement. The workability of the concrete tends to decrease with the rise in percentage replacement of sand as a result of increase in water absorption rate of quarry dust. The height of slump constant remains constant at 300mm for all mixes with same water-cement ratio i.e. workability in terms of slump marked as 0mm. The conclusion can be made that the use of quarry dust as an alternative to river sand can be done in the concrete mixes suitably.

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