Binary effect of silica fume and waste glass powder as a cement replacement for a sustainable concrete
Year: 2025
Type: article
Abstract: One promising implementation entails the utilization of silica fume and waste glass powder. This study aims to examine the impact of incorporating twelve different combinations of waste glass powder (WGP) and silica fume (SF) as partial cement replacements in concrete mixtures. The experimental proportions include individual replacements of GP (5%, 10%, 15%, 20%) and SF (5%, 10%, 15%, 20%), along with blended combinations (GP 20%-SF 20%, GP 10%-SF 10%, GP 20%-SF 10%, GP 10%-SF 20%, GP 15%-SF 15%, GP 15%-SF 5%, and GP 5%-SF 15%). A thorough experimental investigation was conducted to examine key concrete properties, encompassing fresh state (workability), hardened state performance (compressive and tensile strength), durability indicators (water absorption and density), microstructural features (SEM), and elevated temperature resistance. Among the tested mixes, mix 10 (20% GP & 20% SF) demonstrated the highest slump compared to the control mix. Meanwhile, mix 5 (15% SF) achieved the greatest compressive strength, showing a 9.5% improvement over the control mix. This enhancement is due to the pozzolanic reaction of silica fume and glass powder, which refined the microstructure, thereby increasing strength. In terms of splitting tensile strength, mix 5 (15% SF) again performed the best, with a 13.3% increase over the control mix. On the other hand, mix 4 (15% GP) had the highest density, exhibiting a 2.6% rise compared to the control. Additionally, mix 3 (10% SF) displayed the lowest water absorption, attributed to the filler effect and pozzolanic activity, which sealed voids and densified the matrix, reducing water penetration into the samples.
Source: Discover Concrete and Cement
Authors: Ömer Damdelen, Mohammad Ali Mosaberpanah, Stephen Babajide Olabimtan, Micheal Deric Anthony, Babatunde Olufunso Oluwole
Institution: Cyprus International University
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4415749400