Lookup NU author(s): Dr Yongjian Huang,
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Road maintenance work in the UK consumes large volumes of quarried minerals. Use of recycled, in preference to primary, materials helps ease landfill disposal and reduce demand for extraction. Yet concerns over inferior performance and additional costs have hindered the otherwise widespread use of secondary aggregates in pavement surface asphalt which represents a value application and therefore introduces a few more requirements for both aggregates and asphalt property. Waste glass and steel slag are selected for analysis. This paper reviews standards and literature to identify relevant requirement; and reviews the performance record of pavement containing these recycled constituents. A study of waste arising and management indicates that, although potential supply is good, a few factors have effectively depressed the attempts to recycle them into asphalt surfacing on a commercially acceptable level. These barriers may also apply to the use of other waste materials and a few measures are suggested for their removal.
Author(s): Huang Y, Bird RN
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Unknown
Conference Name: mairepave - The Fourth International Symposium on Maintenance and Rehabilitation of Pavements and Technical Control
Year of Conference: 2005