Pathways to circular construction: An integrated management of construction and demolition waste for resource recovery

Ghaffar, Seyed Hamidreza; Burman, Matthew; Braimah, Nuhu

doi:10.1016/j.jclepro.2019.118710

Cited by 344 publications

(217 citation statements)

References 49 publications

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“…A proposed way of dealing with this problem is using waste pozzolan instead of some part of the cement. [7] Ghaffar et al [8] goes even further in ensuring the sustainable use of materials and the reduction in greenhouse gas emissions, and describes a circular construction concept, which is the idea of reusing materials from demolition for creating new constructions. Before waste can be reused, it has to be successfully used for the first time.…”

Section: Introductionmentioning

confidence: 99%

Application of Ilmenite Mud Waste as an Addition to Concrete

2020

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Storing waste in concrete instead of landfills is environmentally friendly and also might make concrete more sustainable if some part is replaced with cement. This article presents a new way of valorising hazardous waste, namely ilmenite MUD from the production of titanium dioxide, which is used as a reactive additive to concrete. In fact, there are currently no articles presenting the way of valorisation that is presented in this paper. The global annual production of MUD is estimated to be about 0.7 million tons. Valorisation is possible due to the additional rinsing and filtering in the factory, which also confirms the novelty of this article. In this operation, the most hazardous compounds are returned back to the factory process. Rinsed mud (RMUD) is a pozzolanic reactive material with the potential use as a substitute of a part of Portland cement in concrete and other cementitious binders, like siliceous fly ash (FA). The level of RMUD pozzolanic activity is as high as the activity of siliceous fly ash. Comparative tests of concretes containing RMUD and fly ash, such as compressive strength, bending strength and shrinkage, were conducted. The concrete containing RMUD reached almost 90% of compressive and 108% of bending strength after 28 days of curing, compared to FA concrete. The results presented in this article are very promising and might point to a new way of valorising ilmenite mud waste.

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Section: Introductionmentioning

confidence: 99%

Application of Ilmenite Mud Waste as an Addition to Concrete

2020

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“…On the other hand, the construction industry has constantly been producing large quantities of residue over the past decades [ 12 , 13 ]. Most of this residue is generated from construction and demolition, and mainly consists of concrete debris, cement mortar debris, and crushed ceramic [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Stone Mastic Asphalt Containing Ceramic Waste Aggregate for Cooling Asphalt Pavement

Huang

Qian

et al. 2020

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Construction and demolition waste material is of great potential for use in pavement engineering. This paper aims to investigate the feasibility of ceramic waste aggregate (CA) used in cooling asphalt pavement through a series of test methods and simulation techniques. Stone mastic asphalt (SMA) containing 10%, 20%, 30%, 40%, and 50% coarse ceramic waste aggregate (CASMAs) was first designed using the Marshall method. Afterward, the road performance and thermal insulation performance of the five different CASMAs were assessed by a comprehensive lab test, including a wheel rutting test, moisture susceptibility test, bending beam test, fatigue beam test, and indoor thermal insulation test. Finally, a 2D finite-element (FE) model was developed to investigate the transient thermal field and rutting deformation response of the cooling asphalt pavement with CASMAs. Results show that CASMAs experienced degradation of rutting resistance, moisture susceptibility, and anti-cracking performance while still meeting technical requirements with CA content of up to 40%. On the other hand, CASMAs can cool the pavement’s temperature by 11.5 °C at the bottom of asphalt layers. The permanent rutting deformation of cooling asphalt pavement was 45.36% smaller than that of conventional asphalt pavement without CASMAs. Based on the test results and numerical simulation results, the optimum content of ceramic waste aggregate in stone mastic asphalt was recommended as 40%.

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“…The potential of material reuse and recycling to reduce environmental impacts associated with construction and demolition has already gained recognition among policy makers [ 11 ]. Despite the gained recognition and market potential of CDW being reintroduced into new construction applications, it is still hindered by barriers such as logistics (41%), cost (29%), regulations (12%), and others (6%) [ 12 ]. There is also a negative attitude towards reused and recycled products perceived by many as environmentally friendly but of lower quality [ 9 ].…”

Section: Ce Framework On Materials Recovery and Productionmentioning

confidence: 99%

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

2020

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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.

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Pathways to circular construction: An integrated management of construction and demolition waste for resource recovery

Cited by 344 publications

References 49 publications

Application of Ilmenite Mud Waste as an Addition to Concrete

Application of Ilmenite Mud Waste as an Addition to Concrete

Evaluation of Stone Mastic Asphalt Containing Ceramic Waste Aggregate for Cooling Asphalt Pavement

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

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