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      OPTIMIZATION OF AGGREGATE TESTING USING POLYNOMIAL REGRESSION

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          Abstract

          Recycled Aggregate (RA) has only been used as sub-grade applications, roadwork and unbound materials because it is believed that RA has lower strength and poorer quality than normal aggregate. This paper assesses RA quality by proposing a new testing procedure. The new procedure is developed by using correlation information among the standard twenty three tests commonly employed in the construction industry. Samples of RA from ten demolition sites were obtained with service life ranging from ten to forty years. One additional set of samples was specifically collected from the Tuen Mun Area 38 Recycling Plant, Hong Kong for testing. The characteristics of these eleven sets of samples were then compared with normal aggregate samples. A Vandermonde matrix for interpolation polynomials coefficient estimation is employed to yield detailed mathematical relationships between results of two particular tests, from that redundant tests can be identified. Different orders of interpolation polynomials are used for comparison, hence the best-fit equations with lowest fitting errors from different orders of polynomials can be found. This paper shows that four out of twenty three tests are required in the new testing procedure.

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          Most cited references 5

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          ‘Concrete design towards complete recycling’

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            Recycling portland cement concrete pavement at the contractor’s option

             R. Reusser (1994)
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              Use of recycled asphalt pavement—a practical approach to asphalt recycling

               H. CHEUNG (2003)
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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1552-6100
                1943-4618
                1943-4618
                Summer 2007
                : 2
                : 3
                : 144-152
                Author notes

                1Griffith School of Engineering, Gold Coast Campus, Griffith University, PMB50 Gold Coast Mail Centre, QLD 9726, Australia. Email: v.tam@ 123456griffith.edu.au . Fax: (61)7-5552-8065. Tel: (61)7-5552-9278 (corresponding author).

                2Griffith School of Engineering, Griffith University. Both authors contribute equally to this paper.

                Article
                jgb.2.3.144
                10.3992/jgb.2.3.144
                ©2007 by College Publishing. All rights reserved.

                Volumes 1-7 of JOGB are open access and do not require permission for use, though proper citation should be given. To view the licenses, visit https://creativecommons.org/licenses/by-nc/4.0/

                Page count
                Pages: 9
                Product
                Categories
                RESEARCH ARTICLES

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