Since void content has a direct bearing on asphalt performance, the reliability of void content determination methods is key. Tafadzwa Mafuma looks at findings by the CSIR and Much Asphalt to provide feedback on different methodologies.
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Moisture is the greatest enemy of any asphalt layer. This presentation talks to the paradigm shift that is needed in design thinking and budgeting to avoid moisture ingress, supported by relevant case studies.
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Dr Horak’s presentation explains the Bailey Method (BM) basis of packing analysis, the Dominant Aggregate Size Range (DASR) method and Binary Aggregate Packing (BAP) principles, and the integration of the three methods to improve aggregate packing efficiency in asphalt mix designs.
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The pros and cons of both standard and “new age” field and laboratory permeability testing methods. The author warns that an accurate void determination method is critical to high levels of correlation, no matter which tests you choose. By Joanne Muller.
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A step-by-step methodology using existing statistical concepts as a screening and analysis tool to determine asphalt permeability. This paper shows how you can let the data itself lead you to the answers by using simple statistical analysis tools. Report on trends and results such as deterioration, Weak spots and quality control in a visual manner that is easily understood. By Ané Cromhout.
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