Publications

This report details the experimental program, analysis and findings of the assessment of the impacts of axle mass increases on road deterioration for sprayed seal surfaced unbound granular pavements. Load-damage exponents ranged between two and four…

This report presents the final outcome of an investigation to review, analysis and identify suitable sealed granular pavement sections for inclusion in the LTPP study. The investigation identified 69 sealed granular pavement test sections across…

This report is an update of earlier Austroads sprayed seal design procedures based on the philosophy of filling voids in the aggregate matrix with binder to a depth of about one half to two thirds the height of the aggregate when laying on its least…

This report gives information on the development of a procedure to fractionate bitumen using an Iatroscan liquid chromatography system, and also presents test results on a range of Australian bitumens. An introduction discusses the topic of bitumen…

The suitability of the CoreLok device was assessed for estimating the bulk density of compacted asphalt specimens. The device encloses a sample in a plastic bag which is subjected to vacuum and sealed. Results were compared to saturated surface dry…

Australia s specification for paving grade bitumen AS 2008 evolved in the early 1970s from a penetration grading system to one with viscosity control at 60 Degrees Celsius. In support of this primary performance control property, penetration at 25…

This report describes an investigation into the temperature sensitivity and repeatability of test results obtained using a Cooper wheel tracking device. One set of specimens was tested at the standard temperature (60 Degrees Celsius) and two other…

The report presents data on the asphaltene content of samples manufactured between 1956 and 1991. Asphaltene content is one of the main chemical properties used to characterise bitumen. Bitumens are generally regarded as colloids whereby clusters of…

An inter-laboratory proficiency study was conducted based on the resilient modulus test. Participants from Australia and New Zealand were required to test nine asphalt cylinders prepared by a single laboratory. All participants used a MATTA to…

The move towards performance based specifications (PBS) for the nation s vehicle fleet is expected to result in increased stressing of pavement surfacings. The extent of surface stressing is currently unknown and the capacity of surfacing treatments…