Evaluation of concrete properties by using demolished aggregates

الملخص EN

It is an economic concept to get red of any demolished type by using in constructions, so, in Egypt ; there are many activities in the field of recycled aggregate for using in different ways.

This study aims to identify the properties for concrete of demolished aggregates as coarse and fine aggregates.

Local aggregates such as siliceous, limestone, basalt as coarse aggregates and siliceous sand as fine aggregate and air cooled slag (course and fine) were used to study their physical and mechanical properties.

In addition, concrete mixes of the used aggregates were prepared to investigate the effect of using demolished aggregates with every type of the local aggregates separately at the percentages (25, 50, 75) %.

Concrete mixes properties were investigated for fresh and hardened states.

Those properties were slump, and density in fresh state, compressive, flexural, tensile strengths, and drying shrinkage in hardened state.