STRENGTH AND WORKABILITY CHARACTERISTICS OF CONCRETE WITH PARTIAL REPLACEMENT OF MARINE MATERIALS AND GLASS POWDER

Abstract

This study investigates the strength and workability characteristics of concrete with partial replacement of marine materials and glass powder as sustainable alternatives to conventional ingredients. The increasing demand for natural resources in construction and the environmental issues associated with waste disposal have led to the exploration of alternative materials in concrete production. Marine materials such as sea sand and marine aggregates, along with glass powder derived from waste glass, offer a potential solution for sustainable construction. In this research, glass powder is used as a partial replacement for cement, while marine materials are used as partial substitutes for fine aggregates. Various mix proportions are prepared by replacing conventional materials with different percentages of glass powder and marine materials. The workability of fresh concrete is evaluated using standard tests such as the slump test, while the strength properties are assessed through compressive strength and split tensile strength tests at different curing periods. The experimental results indicate that the incorporation of glass powder improves the workability of concrete due to its fine particle size and pozzolanic nature. However, excessive replacement may lead to a reduction in strength. Marine materials show acceptable performance but may influence durability and strength due to the presence of salts and impurities. An optimum replacement level is identified where both strength and workability are maintained within acceptable limits. The study concludes that the use of marine materials and glass powder in concrete can contribute to sustainable construction practices while reducing environmental impact.