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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5835

Title: Aggregate surface areas quantified through laser measurements for South African asphalt mixtures
Authors: Anochie-Boateng, J
Komba, J
Tutumluer, E
Keywords: Asphalt mixtures
Aggregate surface area
Asphalt film thickness
Surface area factors
Hveem method
3D Laser scanning method
Issue Date: Feb-2012
Publisher: American Society of Civil Engineers
Citation: Anochie-Boateng, J, Komba, J and Tutumluer, E. 2012. Aggregate surface areas quantified through laser measurements for South African asphalt mixtures. ASCE Journal of Transportation Engineering, vol. 1(317), doi:http://dx.doi.org/10.1061/(ASCE)TE.1943-5436.0000416
Series/Report no.: Workflow;8244
Abstract: For several decades, efforts have been made by engineers and researchers in the road and airfield pavements, and railroads to develop methods/procedures for accurate quantification of aggregate shape and packing properties. The difficult part of the process has been the fact that aggregate particles have irregular and non-ideal shapes. New research capabilities, including laserbased technology can effectively address the difficulties associated with aggregate shape measurements to optimize asphalt mix design. This paper introduces the use of a three-dimensional (3D) laser scanning method to directly measure the surface area of aggregates used in road pavements in South Africa. As an application of the laser-based measurements, the asphalt film thicknesses of five typical South African mixtures were calculated and compared with the film thicknesses calculated from the traditional Hveem method. Based on the laser scanning method, a new surface area factors were developed for coarse aggregates used in the asphalt mixtures. Overall, the study demonstrated applicability of 3D laser scanning method to characterize coarse aggregate.
Description: Copyright: 2012 ASCE. This is the post-print version of the work. The definitive version is published in ASCE Journal of Transportation Engineering, vol. 1(317), doi:http://dx.doi.org/10.1061/(ASCE)TE.1943-5436.0000416
URI: http://ascelibrary.org/teo/resource/3/jtpexx/317?isAuthorized=no
http://hdl.handle.net/10204/5835
ISSN: 0733-947X
1943-5436
Appears in Collections:Infrastructure engineering
Laser physics and technology
Advanced mathematical modelling and simulation
General science, engineering & technology
General research interest

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