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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/1739

Title: Large stone asphalt mix design for heavy duty asphalt pavements
Authors: Rust, FC
Hugo, F
Myburgh, PA
Grobler, JE
Keywords: Traffic growth
Heavy duty asphalt pavements
Mix design
Issue Date: Aug-1990
Citation: Rust, FC et al. 1990. Large stone asphalt mix design for heavy duty asphalt pavements. 10th Annual Transportation Convention, Pretoria, 6-10 August 1990, pp 21
Abstract: The recent increase in traffic volumes and also axle loads on some of the major routes in South Africa has extended the traffic classes beyond the current highest design class. Additionally there is a strong lobby to increase the legal axle load to between 9 and 10 metric tonnes. There is also a tendency from overseas to use higher tyre pressures with new tyre types. One of the main reasons why the top size stone in mixtures has been limited to 26,5 mm is because the conventional mix design procedures cannot handle aggregates larger than 26,5 mm. A design method to incorporate the benefits of large stone mixes is urgently needed. Mix design, pavement design and pavement performance needs to be considered simultaneously and should not be independent functions as currently is so often the case. A mix design method must therefore be based on engineering properties, structural behaviour and long term performance.
Description: 1990: 10th Annual Transportation Convention, Pretoria
URI: http://hdl.handle.net/10204/1739
ISBN: 0 7988 5034 5
Appears in Collections:Infrastructure engineering
General science, engineering & technology

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