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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/2537

Title: Improved performance evaluation of road pavements by using measured tyre loading
Authors: Maina, JW
De Beer, M
Keywords: Road pavement
Stress-in-motion
Strain energies distortion
Tyre
Multi-layer linear bastic analysis
Issue Date: Nov-2008
Publisher: CSIR
Citation: Maina, JW and De Beer, M. 2008. Improved performance evaluation of road pavements by using measured tyre loading. Science real and relevant: 2nd CSIR Biennial Conference, CSIR International Convention Centre Pretoria, 17&18 November 2008, pp 13
Abstract: This paper presents evaluation of road pavement response under the loading of typical dual and single truck tyre configurations. Locally developed Stress-In-Motion (SIM) technology was used to quantify three-dimensional (3D) shapes of the tyre road pavement contact stresses. The measured stresses were used as input for multi-layer linear elastic analyses in order to demonstrate improved evaluation of pavement performance, especially on the surface of the road structure. Strain Energies of the Distortion (SEDs) at various sections within the road pavement structure were determined. It is shown that the concept of SED as a response parameter that quantifies “potential for failure” of a road pavement structure seems to resonate well with the applied tyre stresses and their different shapes. It was also found that single wide-base tyres introduce more than double the potential for failure compared with the dual tyre configuration on the same pavement. Furthermore, this study demonstrates that under-inflated, heavily-loaded tyres may cause more damage on the surface of the road compares to correctly inflated tyres. The combination of SIM technology and SED from numerical modelling may be used to identify areas of high potential for failure on the road surface
Description: Science real and relevant: 2nd CSIR Biennial Conference, CSIR International Convention Centre Pretoria, 17&18 November 2008
URI: http://hdl.handle.net/10204/2537
ISBN: 9780798855730
Appears in Collections:Building science and technology
Construction
Infrastructure engineering
Infrastructure systems and operations
Analytical science
Stress-in-motion
Logistics and quantitative methods
Planning support systems
Rural infrastructure and services
CSIR Conference 2008

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