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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/4417

Title: Evaluation of 3D laser device for characterizing shape and surface properties of aggregates used in pavements
Authors: Anochie-Boateng, J
Komba, J
Makulenga, N
Maharaj, A
Keywords: Transportation
3D laser device
Surface properties
Rock shapes
Airfield pavements
Road pavements
SATC 2010
Issue Date: Aug-2010
Publisher: Document Transformation Technologies
Citation: Anochie-Boateng, J, Komba, J, Makulenga, N and Maharaj, A. 2010. Evaluation of 3D laser device for characterizing shape and surface properties of aggregates used in pavements. 29th Annual Southern African Transport Conference, "Walk Together", CSIR International Convention Centre, Pretoria, South Africa, 16 - 19 August 2010, pp 9
Abstract: A new three-dimensional (3D) laser scanning device has been acquired by CSIR Built Environment to determine rock aggregates shape and surface properties. The overall objective is to employ laser-based techniques to accurately determine characteristics of shape, volume, angularity, surface texture, surface area, and grading of rock aggregates that influence performance of road and airfield pavements in South Africa. This paper presents results obtained from a comprehensive scanning evaluation program for the 3D laser device using fifteen different spherical and twelve cubic shaped objects. The laser device was evaluated for accuracy and repeatability to compute aggregate surface area and volume properties. The results showed that the laser device measurements were in very good agreement with the computed theoretical values of the spherical and cubical objects. Thus, there is potential that the laser device will provide accurate and reliable shape and surface properties of rock aggregates to efficiently rank and utilize the sources of aggregate stockpiles used for pavement construction.
Description: 29th Annual Southern African Transport Conference, "Walk Together", CSIR International Convention Centre, Pretoria, South Africa, 16 - 19 August 2010
URI: http://hdl.handle.net/10204/4417
ISBN: 9781920017477
Appears in Collections:Infrastructure engineering
Laser physics and technology
Laser materials processing
Infrastructure systems and operations
General science, engineering & technology

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