Use of recycled concrete aggregate for pavement construction

Tuladhar, Rabin, Marshall, Amelia, and Sivakugan, Siva (2020) Use of recycled concrete aggregate for pavement construction. In: Pacheco-Torgal, Fernando, Ding, Yining, Colangelo, Francesco, and Tuladhar, Rabin, (eds.) Advances in Construction and Demolition Waste Recycling: Management, Processing and Environmental Assessment. Woodhead Publishing . Elsevier, Duxford, United Kingdom, pp. 181-197.

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Abstract

Construction and demolition (C&D) wastes comprise waste generated from construction, renovation, and demolition of buildings, roads, and other infrastructures, and excavation of land associated with construction activities (QDERM, 2011). C&D wastes include a wide range of different waste materials such as concrete, asphalt, bricks, tiles, timber, steel, and soil. In 2016/2017, 20.4 Mt of C&D wastes were produced in Australia, which accounts for more than 40% of Australia’s total annual waste (Pickin et al., 2018). Hydraulically bound materials are made by mixing aggregates and granular aggregates with cement as a binding material. On the other hand, unbound pavement materials consist of quarry materials, natural gravels, and recycled materials without the use of binding materials like cement. Unbound granular materials are the most commonly used material for base/subbase construction in Australia owing to their strength, ease in construction, and low cost. Traditionally, natural crushed rocks are used as granular unbound material for road base and subbase constructions. With the increasing scarcity of natural aggregates and the need to reduce the waste going into landfills, alternative sustainable materials such as recycled C&D wastes are increasingly being considered as a substitute for natural aggregates.

Item ID: 62930
Item Type: Book Chapter (Research - B1)
ISSN: 978-0-12-819055-5
Keywords: Recycled concrete, Recycled concrete aggregate, pavement, subbase
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Copyright Information: © Woodhead Publishing 2020
Date Deposited: 22 Jul 2020 04:43
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090503 Construction Materials @ 50%
09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 50%
SEO Codes: 87 CONSTRUCTION > 8703 Construction Materials Performance and Processes > 870304 Stone, Ceramics and Clay Materials @ 50%
87 CONSTRUCTION > 8703 Construction Materials Performance and Processes > 870399 Construction Materials Performance and Processes not elsewhere classified @ 50%
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