A Review of the Behavior of Structural Elements by using Recycled Coarse Aggregate Concrete.
Author(s):
Akshay S. Dombe, Rahul D. Patil, Amol S. Thorbole
Keywords:
Recycled Concrete Aggregates (RCA), Construction And Demolition (C&D) Waste, Natural Resources, Durability, Chloride Ingress, Steel Corrosion, Cracking Damage, Bond Behavior, Recycled Fine Aggregate (RFA), Recycled Asphalt Pavement (RAP), Shear Capacity.
Abstract
This paper presents a comprehensive literature review on the use of recycled concrete aggregates (RCA) in construction, aiming to address the challenges of diminishing natural resources and increasing construction and demolition (C&D) waste. The review highlights the benefits and limitations of RCA and examines the impact of the RCA replacement ratio on the performance of concrete structures. The findings suggest that higher RCA content in concrete can lead to increased chloride ingress, steel corrosion, and cracking damage, which affect the long-term durability of concrete beams. The bond behavior between reinforced recycled aggregate concrete (RAC) and steel bars is influenced by the RCA replacement percentage and water-binder ratio, with higher RCA content and the presence of recycled fine aggregate (RFA) negatively affecting bond strength. Additionally, incorporating recycled asphalt pavement (RAP) and RCA in reinforced concrete beams can enhance shear capacity, but careful consideration of mix proportions is required. Optimal proportioning of recycled coarse aggregate, preprocessing of RCA, and reevaluation of design provisions are crucial for the successful utilization of RCA in construction. Further research is recommended to explore the behavior of structures using RAP and RAP-RCA in different structural members. By embracing RCA, the construction industry can contribute to a more sustainable future by conserving natural resources and diverting C&D waste from landfills.
Article Details
Unique Paper ID: 161018

Publication Volume & Issue: Volume 10, Issue 2

Page(s): 341 - 345
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