Performance of construction and demolition waste as recycled aggregates in concrete – review
Article
Trivedi, S.S., Das, B.B. and Barbhuiya, S. 2024. Performance of construction and demolition waste as recycled aggregates in concrete – review. Construction Materials. p. In Press. https://doi.org/10.1680/jcoma.23.00030
Authors | Trivedi, S.S., Das, B.B. and Barbhuiya, S. |
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Abstract | This article presents a structured and comprehensive review of the existing literature on physical, chemical, microstructure, and durability properties of recycled aggregate concrete (RAC). The engineering properties of concrete made from such recycled aggregates are critically analyzed by focusing mainly on the fresh and hardened states along with several characterization techniques such as SEM, EDX, XRD, FTIR and TG-DTA. Also, creep and shrinkage, the microstructure and durability of recycled aggregate concrete (RAC) were studied and evaluated critically. In addition, improvement techniques in its microstructure are also explored with efficient mixing approaches for the development of geopolymer recycled aggregate concrete. Furthermore, techniques to enhance the mechanical characteristics and long-term performance of recycled aggregate are distilled and divided into three categories: (1) lowering the porosity of recycled aggregate, (2) lowering the layer of old mortar on the surface of recycled aggregate, and (3) enhancing the property without changing the recycled aggregate. It is evident from the thorough examination that recycled aggregates can be used in concrete up to a certain amount. For the creation of sustainable and high-performance concrete, it is also necessary to incorporate mineral admixtures of micron, sub-micron, and nano size to address the drawbacks of recycled aggregates. |
Keywords | Construction; Demolition; Recycled materials; Concrete structures; Microstructure; Durability; Sustainability |
Journal | Construction Materials |
Journal citation | p. In Press |
ISSN | 1747-650X |
Year | 2024 |
Publisher | Emerald Publishing Limited |
Accepted author manuscript | License File Access Level Anyone |
Digital Object Identifier (DOI) | https://doi.org/10.1680/jcoma.23.00030 |
Publication dates | |
Online | 24 Sep 2024 |
Publication process dates | |
Accepted | 13 Sep 2024 |
Deposited | 11 Dec 2024 |
Copyright holder | © 2024, The Authors |
https://repository.uel.ac.uk/item/8yqyw
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Accepted author manuscript
Performance of Construction and Demolition Waste as Recycled Aggregates in Concrete A Review.pdf | ||
License: CC BY-NC 4.0 | ||
File access level: Anyone |
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