Abstract: Use of recycled aggregate in concrete is helpful for environmental protection. Recycled aggregates are the materials for the long run. This paper reports the fundamental properties of recycled fine aggregate and compares these properties with natural fine aggregates. Fundamental changes in every aggregate property are resolved and their impacts on cementing work are examined finally. Similarly the properties of recycled aggregate concrete are also determined. In addition to that mineral admixture GGBS is also added to concrete by 20% substitution of its total volume. Basic concrete properties like compressive strength, split tensile strength are explained here for full replacement of recycled fine aggregate instead of natural fine aggregate, both with and without admixture.

Keywords: Construction & Demolished wastes, Recycled Fine Aggregate, Mineral Admixture, Compressive strength, Split tensile strength.