Evaluation of strength, wear, and skid resistance in pavement quality concrete with partial replacement of steel slag

Evaluation of strength, wear, and skid resistance in pavement quality concrete with partial replacement of steel slag Lillypushpam Bibitha Vels Institute of Science, India http://orcid.org/0009-0000-7502-7126 Sagayakannan Durgalakshmi Vels Institute of Science, India Kamalasekar Athiappan Thiagarajar College of Engineering, India http://orcid.org/0000-0001-7217-5975

ABSTRACT Sustainable pavement construction is essential for promoting ecological balance and reducing the environmental impact of infrastructure projects. This study investigates the viability of partially replacing conventional fine aggregate (river sand) with steel slag in proportions ranging from 10% to 100% by volume for pavement quality concrete (PQC). The mechanical properties of PQC were evaluated following IRC standards, with a focus on compressive strength, flexural strength, split tensile strength, and fatigue performance. Additionally, the study assessed the concrete’s abrasion resistance and skid resistance, critical for ensuring durability and road safety. The experimental results demonstrated that incorporating steel slag as a fine aggregate replacement significantly enhances the mechanical performance of PQC. A mix containing 40% steel slag exhibited optimal improvements in compressive, flexural, and tensile strengths, alongside superior resistance to wear and skid. These findings indicate that steel slag, when used in appropriate proportions, can enhance both the durability and safety of concrete pavements. The study highlights the potential of steel slag as a sustainable and resource-efficient alternative to conventional materials in pavement construction, contributing to environmental sustainability and improved infrastructure performance.
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