A Review: The Modification Methods of Concrete Recycled Coarse Aggregates
DOI:
https://doi.org/10.53469/jrse.2025.07(06).13Keywords:
Construction waste, Recycled coarse aggregates, Modification methods, Resource utilization, Old mortarAbstract
In recent years, the rapid development of the construction industry has led to the abandonment or demolition of numerous buildings, resulting in an increasingly prominent issue of waste concrete accumulation. However, the recycling rate of construction waste remains low. Recycled coarse aggregates are coated with a significant amount of old cement mortar, which increases their water absorption and introduces numerous weak interfacial transition zones (ITZs) in recycled concrete. These weak ITZs significantly impair the mechanical properties of recycled concrete. This paper reviews methods for removing old cement mortar from recycled coarse aggregates and enhancing the weak interfaces in recycled concrete, analyzing their advantages, disadvantages, applicability, and environmental-economic benefits.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2025 Xinyang Yi, Lincong Zhou

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.