Abstract
This paper presents research results for evaluating effects of utilizing recycled concrete aggregates on the mechanical properties of concrete and its related production cost and embedded energy. The research methodology of this paper includes an experimental work has been designed to determine the mechanical properties of the alternative concrete mix at ages 7, 14, and 28 days, then production cost and embedded energy for each concrete mix were calculated. The results show that the strength of proposed mix design concrete has been negatively affected by recycled concrete aggregate, and the cost of producing recycled concrete is more expensive than ordinary concrete. However, the embedded energy that is utilized in producing recycled concrete is less than ordinary concrete. The originality of this research is based on experiments that are conducted to determine the mechanical properties of concrete made by recycled concrete aggregates and its related cost of production and embedded energy.