Clayey soil stabilization with ordinary Portland cement using the stabilized soil as a mortar

Abstract The purpose of this research investigate the influence of cement on the stabilization of clayey soil, which is prevalent in Khyber Pakhtunkhwa (KPK), Pakistan. Soil samples were obtained from four different sites in the KPK province, and laboratory experiments such as dry density, Atterberg limits, permeability, and unconfined compression tests were performed with and without varied cement percentages (1–5%). The study sought to assess the potential of stabilized soil as a sustainable construction material, particularly for inexpensive housing in rural areas. The findings revealed significant improvements in soil properties, such as increased compressive strength, reduced swelling, and increased dry density, establishing stabilized soil as a suitable construction material for low-cost houses. This research addresses the gap in utilizing locally available clayey soils for sustainable development in rural Pakistan, offering a cost-effective and environmentally friendly alternative to traditional fine aggregates. The findings provide significant insights into improving construction practices in underserved regions, highlighting the novelty of employing cement-stabilized soil as a durable and economical mortar solution.