Use of recycled concrete aggregate for pavement construction
Book Chapter ResearchOnline@JCUAbstract
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.
Journal
N/A
Publication Name
Advances in Construction and Demolition Waste Recycling: Management, Processing and Environmental Assessment
Volume
N/A
ISBN/ISSN
978-0-12-819055-5
Edition
N/A
Issue
N/A
Pages Count
16
Location
N/A
Publisher
Elsevier
Publisher Url
N/A
Publisher Location
Duxford, United Kingdom
Publish Date
N/A
Url
N/A
Date
N/A
EISSN
N/A
DOI
10.1016/B978-0-12-819055-5.00010-3