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New AustStab Stabilisation Guide released

The 2015 edition AustStab Pavement Recycling and Stabilisation Guide has been released and includes updated information on key design trends such as lime stabilisation.

The 2015 edition AustStab Pavement Recycling and Stabilisation Guide has been released and includes updated information on key design trends such as lime stabilisation. Since 1986 Austroads has published the Guide to Stabilisation in Roadworks – a comprehensive manual covering everything any practising pavement engineer or supervisor needs to know about pavement stabilisation and pavement recycling.

Like any good technical publication, it includes references to stabilisation specifications, methodologies, technical information and case studies. In short, it’s a mandatory addition to any engineer’s collection.

In 2009, Austroads changed the format of their publication. Stabilisation design methods were separated by the type of construction. Information is condensed into chapters and spread across up to five different design manuals. Rather than a single guide for pavement stabilisation, there was suddenly a range of textbooks.

The change in format caused concern by the fact that anyone needing a wide array of technical stabilisation knowledge now needed multiple resources, rather than one.

Since its introduction, the Guide to Stabilisation in Roadworks has been an important resource for AustStab. “Basically it’s got everything you need to know,” says Greg White, AustStab Executive Officer. “It’s one of the best tools you can have.”

When the guide changed, AustStab approached Austroads and requested that it still be printed in its old format. When Austroads declined, AustStab suggested that they themselves could print their own edition in the old style but using the same information. Austroads agreed and gave AustStab access to the relevant research and information to compile the alternative guide, as long as the information acknowledged as originally being developed by Austroads.

In 2009, AustStab released its own version of the Austroads manual entitled: Pavement Recycling and Stabilisation Guide. Four years on, a new edition has just been released.

The 2015 AustStab Pavement Recycling and Stabilisation Guide includes updated information on design methods, new case studies and other technical information from Austroads; with additions from AustStab.

There are few major changes from the previous edition, as Mr. White explains, however the new guide has updated information on key design trends, including different procedures for using lime stabilisation. “The design sections have been updated and we’ve had to address question marks raised about lime,” he says. “There’s more information on lime and we’re clearing up any of the myths associated with it.”

Mr. White says that the guide meets all the industry standards and once again gives engineers a one-stop shop for stabilisation information. It captures all of the history, experience and knowledge gathered in the roads stabilisation sector over the past few decades. “It gives all the relevant Austroads information so you never fall foul,” he says.

The textbook not only plays an important role in keeping pavement engineers and supervisors up to date with industry design standards, specifications and methodologies, it also helps guide the next generation of professionals. The Pavement Recycling and Stabilisation Guide is used as a primary resource for the Centre for Pavement Engineering Education (CPEE) stabilisation courses and in other tertiary institutions. “We do a series of presentations on stabilisation to about six or seven universities around Australia and we give those students access to the guides,” says Mr. White. “It’s the bible for stabilisation.”

The Guide is available through the AustStab website, through EA Books and is provided as a complimentary text by AustStab for delegates attending the CPEE short course in in-situ stabilisation.

David Sutcliffe, General Manager Central Goldfields Shire, commented: “The Guide is a very good textbook that answers any questions I’ve had about stabilisation.”

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