The recycling industry continues to grow as a means of utilizing waste materials in today's world and as such more markets must be urgently established for recycled products. Currently in the state of Victoria, Australia, 186,000 tonnes of recycled glass are stockpiled annually and these stockpiles are growing. However, there is little known reuse application for recycled glass in pavement subbase applications due to limited knowledge of its geotechnical properties. The reuse of recycled glass in road pavement applications will provide the opportunity not only to get rid of the waste glass stockpiled and minimize the use of virgin materials in pavement applications but also to minimize the valuable land being used for stockpiles. This paper presents a preliminary laboratory evaluation of select geotechnical properties of recycled glass when used in blends of up to 50% with recycled crushed concrete in pavement subbase applications. Laboratory tests discussed in this paper include modified compaction, Los Angeles abrasion loss, consolidated drained triaxial compression test and California Bearing Ratio (CBR) test. The findings of this laboratory evaluation indicate that potentially up to 30% recycled crushed glass of particle size less than 4.75 mm could be safely added to Class 3 recycled crushed concrete in pavement subbase applications.
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