Behavior of concrete containing waste iron and crushed igneous rocks modifying with waterproof admixture and polymers

Abstract

This study tries to focus on some of the mechanical properties of concrete containing recycled aggregate which uses waste iron as fine aggregate and waste gabbro rock as coarse aggregate. They replacement of two materials are from 0% to 100%. This study also demonstrates that the compressive strength increases from 40.2MPa to 51.8MPa at 75% replacement of fine and coarse aggregate and the flexural strength increases from 3.1 to 8.9MPa. Furthermore, it was found that less absorption for the concrete obtained using recycled aggregate because of less voids in such concrete and that means high durability concrete in same time and that attributed by high durable igneous gabbro rock. This rock has high density, strength and hardness and also very low water absorption. The study also includes modifying waste aggregate concrete with waterproof admixture and styrene butadiene polymers which increased the strength and decrease the absorption especially after 75% replacement of coarse and fine aggregates.