Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/189647

Title

Geotechnical properties of recycled crushed brick in pavement applications

Author(s)

Arulrajah, Arul;  Piratheepan, J.;  Aatheesan, T.;  Bo, M. W.

Abstract

This paper presents the findings of a laboratory investigation on the characterization of recycled crushed brick and an assessment of its performance as a pavement sub-base material. The properties of the recycled crushed brick were compared with the local state road authority specifications in Australia to assess its performance as a pavement sub-base material. The experimental programme was extensive and included tests such as particle size distribution, modified Proctor compaction, particle density, water absorption, California Bearing Ratio, Los Angeles abrasion loss, pH, organic content, static triaxial and repeated load triaxial tests. California Bearing Ratio values were found to satisfy the local state road authority requirements for a lower sub-base material. The Los Angeles Abrasion Loss value obtained was just above the maximum limits specified for pavement sub-base materials. The repeat load triaxial testing established that crushed brick would perform satisfactorily at a 65% moisture ratio level. At higher moisture ratio levels shear strength of the crushed brick was found to be reduced beyond the acceptable limits. The results of the repeat load triaxial testing indicate that only recycled crushed brick with a moisture ratio of around 65% is a viable material for usage in pavement subbase applications. The geotechnical testing results indicates that crushed brick may have to be blended with other durable recycled aggregates to improve its durability and to enhance its performance in pavement sub-base applications.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences

Source

Journal of Materials in Civil Engineering, Vol. 23, no. 10 (Oct 2011), pp. 1444-1452

Publication year

2011

FOR Code(s)

0905 Civil Engineering;  0912 Materials Engineering

Keyword(s)

Australia;  Crushed brick;  Load testing;  Pavements;  Recycled materials;  Recycling;  Road authority specifications;  Sub-base materials

Publisher

American Society of Civil Engineers

ISSN

0899-1561

Publisher URL

http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0000319

Copyright

Copyright © ASCE.

Peer reviewed