A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Three-dimensional laser scanning technique to quantify aggregate and ballast shape properties
Highlights CSIR using laser-based technique to evaluate aggregate/ballast shape properties. Improvements in aggregate/ballast shape properties measurement demonstrated. 3-D laser scanning method provides accurate aggregates aggregates/ballast shape properties. Volume-based flakiness index equation validated for aggregates/ ballast particles. Reliable flakiness data can now be obtained for aggregates and ballast materials.
Abstract There is a need to improve the measurements of shape characteristics of aggregates and ballast materials used in the construction of road, airfield, and railway track infrastructures. The fundamental shape properties of aggregate and ballast, including form (roundness, flatness, elongation, sphericity), angularity, and surface texture (roughness) have not been accurately quantified because of their irregular and non-ideal shapes. Current developments are shifting from manual and subjective methods towards a more accurate and automated techniques to quantify aggregate shape properties. This paper validates a new flakiness index equation using three-dimensional (3-D) laser scanning data of aggregate and ballast materials obtained from different sources (quarries) in South Africa. The new equation uses volume ratio instead of the traditional mass ratio to determine flakiness index of aggregates and ballast materials. It is concluded that the validated equation can be used with confidence to determine flakiness index of aggregate and ballast materials.
Three-dimensional laser scanning technique to quantify aggregate and ballast shape properties
Highlights CSIR using laser-based technique to evaluate aggregate/ballast shape properties. Improvements in aggregate/ballast shape properties measurement demonstrated. 3-D laser scanning method provides accurate aggregates aggregates/ballast shape properties. Volume-based flakiness index equation validated for aggregates/ ballast particles. Reliable flakiness data can now be obtained for aggregates and ballast materials.
Abstract There is a need to improve the measurements of shape characteristics of aggregates and ballast materials used in the construction of road, airfield, and railway track infrastructures. The fundamental shape properties of aggregate and ballast, including form (roundness, flatness, elongation, sphericity), angularity, and surface texture (roughness) have not been accurately quantified because of their irregular and non-ideal shapes. Current developments are shifting from manual and subjective methods towards a more accurate and automated techniques to quantify aggregate shape properties. This paper validates a new flakiness index equation using three-dimensional (3-D) laser scanning data of aggregate and ballast materials obtained from different sources (quarries) in South Africa. The new equation uses volume ratio instead of the traditional mass ratio to determine flakiness index of aggregates and ballast materials. It is concluded that the validated equation can be used with confidence to determine flakiness index of aggregate and ballast materials.
Three-dimensional laser scanning technique to quantify aggregate and ballast shape properties
Anochie-Boateng, Joseph K. (author) / Komba, Julius J. (author) / Mvelase, Gculisile M. (author)
Construction and Building Materials ; 43 ; 389-398
2013-02-26
10 pages
Article (Journal)
Electronic Resource
English
Three-dimensional laser scanning technique to quantify aggregate and ballast shape properties
| Online Contents | 2013
Three-dimensional laser scanning technique to quantify aggregate and ballast shape properties
| British Library Online Contents | 2013
| British Library Conference Proceedings | 2016