Premature failure is a manmade phenomenon. For surfacing to perform properly, the G1 base needs to provide a well-knit aggregate mosaic. Kleyn works on the principle that mosaic particle interlock (density) = stability/strength…
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If nanotechnology is new to you, this is a great A to Z explanation. You will get the background, definitions, FAQs, history, science and mythbusters. Application of nanotechnology can lead to advances in solving general road engineering problems…
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Nico shares Roadlab’s expertise in this field, starting with tests currently used to determine material properties before treatment/stabilization/modification, followed by the properties of Nano Modified Emulsion (NME) treated materials together with testing technologies and procedures.
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Herman Marais provides a definition and discusses nanotechnologies in use and under development, as well as future opportunities. Of particular interest is the South African experience of nanotechnologies, including examples of studies conducted to date.
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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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Ensure that the project mix materialises on site by sticking to some basic principles. This presentation enlarges on the basics such as quality control of mixes containing reclaimed asphalt (RA), consistency of RA fractions in the mix, aspects to consider at stockpiles, moisture content, and finally sampling, testing and acceptance control as for conventional asphalt mixes.
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Ensure that the project mix materialises on site by sticking to some basic principles. This presentation enlarges on the basics such as quality control of mixes containing reclaimed asphalt (RA), consistency of RA fractions in the mix, aspects to consider at stockpiles, moisture content, and finally sampling, testing and acceptance control as for conventional asphalt mixes.
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Reclaimed asphalt (RA) is the industry’s answer to environmental sustainability. Here you will gain an understanding of the use of RA from removal to stockpiling of unprocessed RA and avoiding moisture ingress, to crushing, screening and fractioning, stockpiling processed RA, and finally optimising its use.
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