Durability properties of treated recycled coarse aggregate concrete.

The durability characteristics of treated recycled coarse aggregate concrete are presented in this paper. When recycled coarse aggregate is reused in concrete, the old cement mortar connected to its surface is removed, causing the concrete to perform poorly in terms of strength and durability. So, before being used in concrete, recycled coarse aggregate is treated in a variety of ways to improve its strength and durability. In this paper various physical, chemical, mechanical and durability properties of recycled aggregate concrete are discussed. When comparing the qualities of concrete formed with 20-30% recycled coarse particles to those of normal concrete, there is no notable difference. Concretes with 50% to 100% recycled aggregates show a lower increase in compression strength from 7 to 28 days than conventional concrete containing solely raw materials. The HCl acid soaking treatment eliminated a considerable amount of mortar content, resulting in a significant increase in the characteristics of treated recycled coarse aggregate (TRCA). [ABSTRACT FROM AUTHOR]