This month we review happenings, discuss Australian Standards under review, provide links to the ARRB Unsealed Roads symposium papers and begin talking about the 2014 AustStab conference.
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News from the Centre of Stabilisation expertise in Australia

A monthly newsletter informing you of initiatives and happenings in the stabilisation industry in Australia

Dear <<First Name>>

Welcome to AustStab's 21st newsletter. In January 2014:
  • Leah relocated to Sydney ;
  • We completed accreditation audits in Queensland;
  • We participated in the ARRB review in the review of the Bitumen Safety Guide Working review;
  • We reviewed contractor membership applications mid January 2014; and
  • We continued to deliver on the pillars of the association.

We trust you had a happy holiday season and look forward to providing you with more stabilisation news and expertise in 2014!

Greg White

Australian Standards Under Review

A review of AS1289 6.1.1 CBR is under review. Howard Jeffery-Wright, Downer Infrastructure, is attending the review committee on behalf of AustStab.

Howard advised that the this document will shortly be available for public comment. Important changes to curing and preparation of specimens along with equipment checks will be incorporated in the review. Members should familiarise themselves with the changes, and comment on the changes if necessary.

If you require additional information on this review process, or would like to participate in review of Australian Standards on behalf of AustStab, please contact Leah for more information at

For more information about current standards under review please clicking here.

ARRB Unsealed Roads Symposium

In October 2013 ARRB hosted the Unsealed Roads Symposium, and AustStab was represented at this event.

Copies of the presentations made at the Symposium are now available on the ARRB website are available by clicking here.

Laboratory Testing CBR

One of the most common empirical tests used to characterise the strength of the subgrade and pavement materials is CBR. It is both an indirect indicator of shear strength and, to a lesser extent, the bearing strength.

The CBR has become the universal soil test that is used to characterise subgrade materials on which pavement thickness design charts are based. It is also used to characterise the pavement subbase materials with CBR values generally less than 100%. This test is not considered sufficiently reliable to characterise pavement base materials with CBR values exceeding 100%.

Copies of the Guide are available by clicking here.
AustStab Conference 2014 - Save the Dates

AustStab will host the 19th Annual AGM and 3rd Annual Awards dinner on 11 - 13 August 2014 in the Hunter Valley.

Following the successful conference on the Gold Coast in 2013, members requested that we include presentation of papers providing information on the latest technology and research as well as more detailed presentations regarding the Award nominations for the year.

Proposals for papers to be presented are now being accepted for the conference. Guidelines for the presentations are available from Leah Fisher. All presentations will be subject to the approval of the Council. 

For more information email Leah by clicking here

Copyright © 2014 AustStab Limited, All rights reserved.

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