"Glascrete" the term used for concrete in which all the aggregates or part of it are substituted by crushed glass. Glass is the only material that can be recycled many times without changing its properties; these properties making it an ideal material in concrete. The goal of this research was to evaluate the compressive and splitting tensile strength of concrete mixes containing different glass aggregate replacement up to 20 % by volume of sand; with and without admixtures. 144 cubes and 144 cylinders were prepared with different admixtures then tested for compressive and splitting tensile strength. The results indicate that the addition of glass replacements from 5% to 20% by volume of sand; led to 3.8% - 10.6% decrement in compressive strength and 3.9% - 16.4% decrement in tensile strength comparing with 21-day of control mix. However, the use of mineral admixture improved the mixes properties at all ages.