Characterisation of subgrade clays for pavement design in Western Sydney region based on its swelling potential

This paper attempts to collate and analyse the vast amount of laboratory test data available on subgrade soils from past RTA projects carried out in the Western Sydney area of New South Wales. Subgrade clays found in Western Sydney area were characterised in terms of its potential volume change behavior using their index properties such as LL, PI and CBR Swelling. A number of correlations between swelling characteristics and common index properties available from published literature were used in this study for the classification of the subgrade soils. The treatments adopted in the pavement designs for ensuring long term pavement performance in relation to the effect due to potential subgrade swelling are also discussed. Furthermore, the procedures recommended in the latest RTA Supplements to Austroads Guide to Pavement Technology - Part 2 for reactive clay subgrade are described together with some suggested improvements.

• Authors:
  • Saverimuthu, A
  • Nataatmadja, A
• Conference:
  • RTA Pavements Conference, 2011, Sydney, New South Wales, Australia
• Publication Date: 2011-9

Language

• English

Media Info

• Pagination: 22p (day 1)
• Monograph Title: RTA Pavements 2011 Conference, 20-21 September 2011, Darling Harbour, Sydney

Subject/Index Terms

• TRT Terms: Clay; Expansion; Laboratory tests; Pavement design; Soil groups; Soil mechanics; Subgrade (Pavements); Test procedures
• Uncontrolled Terms: Pavement technology
• Geographic Terms: New South Wales
• ATRI Terms: Clay; Expansion; Laboratory test; Pavement design; Soil classification; Subgrade
• ITRD Terms: 2950: Subgrade
• Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01374097
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Jun 27 2012 9:55AM