Gaps Between Supply and Demand of Recycled Aggregate: A Sydney Metropolitan Case Study

Vivian W. Y. Tam (), Farid Sartipi and Khoa N. Le
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Vivian W. Y. Tam: Western Sydney University
Farid Sartipi: Shenzhen University
Khoa N. Le: Western Sydney University

A chapter in Proceedings of the 23rd International Symposium on Advancement of Construction Management and Real Estate, 2021, pp 1050-1059 from Springer

Abstract: Abstract Technology of recycled aggregate is moving forward in a fast pace in Australia by having new technologies such as CO2 Concrete recently proposed by Australian scientists Construction industry has been observed to be still far behind the optimized efficient recycling approaches. This paper studies the reason behind this gap by conducting site visits and surveys. Concrete batching plants and construction and demolition waste recycling plants around Western Sydney have been visited, observed and interviews have been conducted with plant operators. Current ongoing urban development plans have also been identified and studied around the suburbs to propose solutions in fulfilling the existing recycled aggregate gaps on supply and demand. It has been estimated by the NSW government that in the next 20 years that Sydney metropolitan population will grow by around 1.6 million people and almost 1 million of them will be living in Western suburbs. The statement indicates the current existing huge demand for infrastructures including road constructions. In fact, recycled aggregate has mainly been trusted to be suitable for road sub-base material. The paper suggests two approaches in order to increase the current existing demand of recycled aggregate: (1) Introducing the new CO2 concrete technology in order to encourage concrete batching plants to use high quality recycled aggregate; and (2) proposing the idea of using recycled aggregate for the Western Sydney development plans.

Keywords: Recycled aggregate; Western Sydney; Infrastructure planning (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-981-15-3977-0_80

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DOI: 10.1007/978-981-15-3977-0_80

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