Year: 2026
Type: article
Abstract: This study examines the use of ceramic waste sand (CWS) as a partial substitute for natural dune sand (DS) in sand concrete.Five levels of volumetric substitution of sand (0%, 10%, 20%, 40%, and 60%) were studied to evaluate their effects on fresh properties (workability, density, and air content) and hardened properties (compressive strength, flexural strength, modulus of elasticity, and ultrasonic pulse velocity).The results reveal that replacing DS with CWS improves fresh state and mechanical performance.Slump increased from 21.5 cm to 26.2 cm for concrete containing 0% and 60% of CWS, reflecting improved workability due to better particle settling and reduced water absorption.Compressive and flexural strengths increased at 28 days from 28.5 MPa and 6.1 MPa to 34.2 MPa and 8.6 MPa, respectively, for the concrete containing 0% and 40% of CWS.The optimum mechanical performance was achieved between 20% and 40% substitution.Beyond this range, an increase in performance was observed.The statistical modeling using a full factorial design and response surface methodology (RSM) provided predictive equations validated by the analysis of variance (ANOVA) (p < 0.05; R² up to 0.972), confirming the robustness and accuracy of the models.Findings highlight the technical feasibility of using CWS as a high-performance, eco-efficient alternative to natural sand, thereby promoting large-scale recycling of ceramic waste in concrete production.
DOI: 10.18280/acsm.500108
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7154140239