Comparative Study of Sand-Cement Blocks and Crushed Concrete Debris Blocks: A Case Study of Kigali City- Rwanda

Author(s)	Mr. Philbert Ruzibiza
Country	Rwanda
Abstract	Abstract This study investigates the potential use of crushed concrete debris as a sustainable alternative to sand-cement blocks in construction. The research evaluates the compressive strength, water absorption, and density of blocks made from recycled concrete debris and compares them with conventional sand-cement blocks. Results indicate that recycled concrete debris blocks exhibit higher compressive strength, comparable water absorption rates, and lower densities. These findings suggest that recycling concrete debris presents a viable solution for eco-friendly construction materials.
Keywords	Recycled concrete, sand-cement block, compressive strength, water absorption, density, sustainable construction.
Field	Engineering
Published In	Volume 8, Issue 1, January-February 2026
Published On	2026-02-27
DOI	https://doi.org/10.36948/ijfmr.2026.v08i01.70133

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