Effect of Quarry Dust in Compaction Characteristics of Loose Sandy Soil from a Local Paddy Field

Abstract

Loose Soils found in locations such as paddy fields deemed as unsuitable for construction works in general. Loose sandy soil is characterized by its granular and non-cohesive structure, which results in a high porosity and low bulk density. In construction, achieving adequate compaction is essential for enhancing the load-bearing capacity and stability of the soil. Therefore, if the geotechnical properties of these soils can be improved using a waste material such as quarry dust, which is a byproduct of the construction aggregate crushing process, it can offer a significant advantage. This study aims to assess the effect of quarry dust in maximum dry density and optimum moisture content of sandy soils from a local paddy field. Quarry dust is mixed with the soil in proportions of 10%, 20%, 30%, 40% & 50% by weight. Laboratory tests such as sieve analysis, specific gravity, Atterberg limit and proctor compaction tests were conducted on soil and soil – quarry dust. The results indicated that maximum dry density continues to increase with the addition of quarry dust while optimum water content reduces up to the addition of 30% quarry dust. The findings support that compaction characteristics can be improved using quarry dust which increases the suitability of the soil for construction purposes.