Circular Economy on Construction and Demolition Waste: A Literature Review on Material Recovery and Production.

Clarence P Ginga,Ma Klarissa M Daly,Jason Maximino C Ongpeng

doi:10.3390/ma13132970

Clarence P Ginga, Ma Klarissa M Daly + Show 1 more

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https://doi.org/10.3390/ma13132970

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Journal: Materials	Publication Date: Jul 3, 2020
Citations: 156	License type: CC BY 4.0

Affiliation: De La Salle University

Abstract

Construction and demolition waste (CDW) accounts for at least 30% of the total solid waste produced around the world. At around 924 million tons in the European Union in 2016 and 2.36 billion tons in China in 2018, the amount is expected to increase over the next few years. Dumping these wastes in sanitary landfills has always been the traditional approach to waste management but this will not be feasible in the years to come. To significantly reduce or eliminate the amount of CDW being dumped, circular economy is a possible solution to the increasing amounts of CDW. Circular economy is an economic system based on business models which replaces the end-of-life concept with reducing, reusing, recycling, and recovering materials. This paper discusses circular economy (CE) frameworks—specifically material recovery and production highlighting the reuse and recycling of CDW and reprocessing into new construction applications. Likewise, a literature review into recent studies of reuse and recycling of CDW and its feasibility is also discussed to possibly prove the effectivity of CE in reducing CDW. Findings such as effectivity of recycling CDW into new construction applications and its limitations in effective usage are discussed and research gaps such as reuse of construction materials are also undertaken. CE and recycling were also found to be emerging topics. Observed trends in published articles as well as the use of latent Dirichlet allocation in creating topic models have shown a rising awareness and increasing research in CE which focuses on recycling and reusing CDW.

Highlights

The construction industry and demolition process after the expiration of the life-cycle of a building or structure is one that produces a considerable amount of waste
Current frameworks in circular economy (CE), Construction and demolition waste (CDW), and material recovery and production focusing on reuse and recycling show a consistent drive into promoting a CE in the construction and demolition industry to minimize if not totally eliminate the high production of CDW that threatens the environment and raises sustainability issues
CE on material recovery and processing on recycling CDW into new construction applications is seen as a feasible approach to be done due to the different applications of CDW when reprocessed and remanufactured into new construction materials

Summary

Introduction

The construction industry and demolition process after the expiration of the life-cycle of a building or structure is one that produces a considerable amount of waste. The mentioned industry is responsible for the production of considerable amounts of waste and the increasing volume has become unbearable for the environment, economic, and social viewpoints [3]. Construction and demolition waste or CDW, is a kind of solid waste that arises from construction sites and in total or partial demolition of buildings and infrastructures. Demolition is the removal of outmoded and unusable structures to replace with new ones. Studies in CDW have long been done since the late 20th century and problems associated with building waste that usually consists of sizable units of debris in large volumes [5]. The lack of knowledge on the composition and characteristics by many who manage

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