Reviewing the Role of Nano-alccofine and Superplasticizers in Enhancing Mechanical Properties of Recycled Concrete
J. Environ. Nanotechnol., Volume 14, No 2 (June 2025) pp. 380-390
Abstract
India has a population of 1.4 billion, raising the question of how to accommodate this growing number of people within the available land mass. Various construction projects are being carried out that contribute to the generation of significant amounts of demolition waste globally. Although the Bureau of Indian Standards allows the use of up to 25% recycled aggregates in concrete, research on the recycling and reuse of this debris has been limited. Recycling these materials to produce sustainable concrete is feasible. However, construction and demolition waste (CDW) often represents one of the most expensive types of waste to dispose of in landfills, a common practice in many countries. Moreover, there are very few regulations governing the reuse of this debris. Reusing CDW can significantly reduce the carbon footprint of the construction sector. This review paper summarizes the published literature of various researchers who have highlighted the importance of using CDW in concrete and examined various treatments that can enhance the fresh, mechanical, and durability properties of concrete. It also provides an overview of the use of nano Alccofine in concrete, explaining how it can be combined with supplementary cementitious materials (SCM) to improve the alkali activation of demolition waste. Furthermore, the paper discusses the impact of superplasticizers on recycled demolition waste. The paper outlines potential future research directions regarding the use of CDW and ultrafine SCM to produce sustainable concrete.
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Reference
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