Abstract
This study presents an innovative approach for waste concrete recycling using water-jet impact (WJI) method. The liberation behavior of coarse aggregates subjected to WJI is discussed; the properties of the recycled concrete aggregate (RCA) are characterized; and the reuse performance of RCA is evaluated. Results show that high fluidity and high penetrability of jet flow help achieve complete liberation of coarse aggregates. Jet flow penetrates and further erodes interfacial transition zone, resulting in efficient residual adhered mortar (RAM) removal. The obtained RCA is of high quality with an extremely low RAM content and water absorption of approximately 2.50% and 0.52%. A suitable jet pressure is recommended to obtain a complete RCA with more spherical and fewer flaky particles. The concrete mixture made of RCA from WJI exhibits better performance than that made of RCA from mechanical crushing. These findings confirm that WJI is an effective approach for waste concrete recycling.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
