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Yayın Improving the behaviour of sand with ceramic additives for sustainable ground engineering(Emerald Group Publishing, 2026-04-14) Koçak Dinç, Beste; Dehghanian, Kaveh; Etminan, EhsanThis study investigates the effectiveness of waste ceramic powder as a sustainable additive for improving the geotechnical behaviour of poorly graded sandy soils. Ceramic waste was mixed with sand at 5%, 10%, and 15% by dry weight, and its influence on density, permeability, and shear strength was evaluated through laboratory testing and numerical modelling. Results indicate a significant improvement in mechanical properties: the internal friction angle increased from 27 degrees for untreated sand to 40.6 degrees at 15% ceramic content, while apparent cohesion increased from 0 to 15.4 kPa. Permeability decreased markedly from 0.115 to 0.0356 m/s due to the micro-filler effect of fine ceramic particles. Maximum dry density increased from 1.553 to 1.904 g/cm & sup3;, indicating improved compaction behaviour. Finite element analyses using PLAXIS 8.6 confirmed the experimental findings, showing reduced static settlement (from 131 to 77 mm) and lower seismic-induced displacements under Kocaeli, Kobe, and Chi-Chi earthquake motions. The results demonstrate that waste ceramic powder is a low-carbon, cost-effective alternative for sandy soil stabilisation, contributing to sustainable ground engineering and circular material reuse.Yayın Industrial wastes for soil stabilization(CRC Press, 2026-01-01) Etminan, EhsanSoil stabilization is an important geotechnical engineering method designed to enhance the engineering properties of soil, including its strength, durability, and load-bearing capacity. These improvements are essential for the effective implementation of infrastructure projects, including roadways, embankments, foundations, and airfields. Traditional methods of stabilizing soil usually involve adding materials like cement, lime, or bitumen to soft and expansive clay soils. Although effective, these traditional technologies are frequently economically unfeasible and ecologically unsustainable due to their substantial energy demands and carbon emissions. Recent studies have looked at using industrial by-products-like fly ash, blast furnace slag, red mud, bagasse ash, and cement kiln dust (CKD)-as alternative stabilizers in order to lower the environmental impact of conventional materials and cut costs. Often considered as environmental liabilities, these industrial byproducts can have major technical benefits when used for soil stabilization projects. This integration reduces landfill use and promotes recycling, so it follows ideas of the circular economy. This chapter aims to review conventional and innovative stabilization methods, evaluate industrial waste and their stabilization procedures, compile worldwide laboratory and field case studies, and offer technical and financial evaluations. It concludes with policies, research gaps, and prospective directions.
