ASTM International announced today the Geotechnical Testing Journal received an increased 2021 impact factor rating of 1.82, up more than 23% from the previous year.
Recent population and industrial growth require innovative approaches for recycling construction materials for civil infrastructure such as railways, roads, and building foundations. This study adopts a combination of expansive black soil blended with coal wash (CW), a by-product of coal mining, to produce a resilient substructural fill for railroads. When considered individually, expansive clays and CW are prone to high swell pressure, shrinking and swelling, excessive degradation, and relatively low bearing capacity, properties that would adversely affect infrastructure. This current study is a laboratory characterisation of soil and CW mixtures in relation to Atterberg Limits, Particle Size Distribution (PSD), and X-ray diffraction spectroscopy. A mini-compaction procedure is used to assess the changes in maximum dry density and optimum moisture content. This is followed by a series of consolidated-undrained monotonic and cyclic triaxial tests of the mixtures. Our findings show that