Shrinkage behaviour of cement modified base course materials for Western Australian pavements

Shrinkage cracking is an important problem of using cement stabilised material in road pavements. It can cause reflective (upward) cracks on an asphalt pavement surface with the provision of water ingress through underlying pavement layers. This paper presents shrinkage behaviour of cement modified material developed for pavements in Western Australia. The test protocol to examine the shrinkage behaviour of the material was adapted from the Australian Standard, AS 1012.13. From this study, shrinkage in cement treated base did not increase with an addition of cement. The highest shrinkage values were found for 2 and 6 per cent cement specimens, it was about 17 per cent greater than the least shrinkage value found for 4 per cent cement sample. It was assumed that high shrinkage in higher cement content i.e., 5 and 6 per cent were dominated by loss of water due to hydration, whereas shrinkage in low cement content, 2-3 per cent, occupied by water evaporation. These experimental results will be considered and integrated with the other experimental results to achieve the optimum mix design of cement modified base course material for Western Australian roads.

Language

  • English

Media Info

  • Pagination: 10p
  • Monograph Title: Public works: explore new territory: IPWEA International Public Works Conference, Darwin, NT, 11-15 August 2013

Subject/Index Terms

Filing Info

  • Accession Number: 01495593
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Oct 17 2013 10:08AM