Influence of soil texture on matrix densification and structural integrity of RHA-stabilized sustainable masonry units

Abstract The growing research on sustainable and low-carbon construction materials has driven the development of Greencrete blocks incorporating Rice husk ash (RHA) and ordinary Portland cement (OPC) as eco-efficient binders. This study investigated the influence of soil texture on the physical, mechanical, and microstructural characteristics of Greencrete blocks stabilized with varying proportions of RHA (5–15%) and OPC (8–12%) within distinct soil matrices. Bulk density, water absorption, and