Alternative fine aggregates in production of sustainable concrete- A review

By S. Kirthika, S. Singh, A. Chourasia. 2020

213 citations recorded by the source corpus.

Abstract Construction sector is mainly liable for waning of natural resources and environmental imbalances due to its unplanned mining activities. The massive use of concrete due to boom in various infrastructure development has led to over-extraction of river sand from the riverbed. This has called for several harmful consequences of ecosystem and non-availability of good quality of raw materials. Disposal of industrial wastes and construction and demolition waste is yet another leading issue now. In this context, use of different alternative fine aggregates (AFA) from different sources can be considered as an effective elucidation. Crushed rock sand (CRS), industrial by-products (IBP) and recycled fine aggregates (RFA) are different types of alternative fine aggregates. The economic, sustainability and social benefits increases utilizing into concrete. Literatures have shown the possibility of AFA in construction as replacement to natural fine aggregate however, a comprehensive study on different AFA in concrete is required to analyse and gain confidence in using them. Therefore, this paper discusses the physical, chemical, mechanical properties of concrete utilizing different types of AFA. In addition, studies on durability, microstructure and life cycle analysis are also highlighted. These sands make concrete sustainable, durable, economical and viable alternatives. This review paper attempted to intricate the reason why these AFA are impending construction materials in future.

Subfields: Building and Construction, Civil and Structural Engineering

View Paper: https://www.semanticscholar.org/paper/a93280ff3c3cad2074fd9a719d2da82a298f6390