Pavement
Initial Field Trials with Surface Wear Rig
- Publication no: AP-T274-14
- ISBN: 978-1-925037-84-5
- Published: 29 September 2014
- PDF (free) Download
A mobile pavement surface wear rig has been constructed, which aims to gain an improved understanding of the failure mechanisms that are particular to the pavement surfacing layer – as distinct from the structural layers – that may be caused by changing axle configurations and the loadings applied by freight vehicles to a pavement surface.
An experiment was conducted replicating a full-scale heavy vehicle tyre, under low-cycle loading conditions on a sprayed seal surface. This report summarises the testing activities and findings.
- Summary
- 1. Introduction
- 2. Experimental Plan
- 2.1. Trial Objectives
- 2.2. Test Rig Manoeuvres
- 3. Field Trials
- 3.1. Overview
- 3.2. Activities
- 3.3. Test Site
- 4. Test Conditions
- 4.1. Description of Manoeuvres
- 4.2. Logged Data
- 4.2.1. . Vertical Loading of the Pavement
- 4.2.2. . Slip Angle of the Test Tyres and Lateral Load
- 4.2.3. . Slip Ratio and Longitudinal Load
- 4.3. Applied Loads for the Test Passes
- 4.3.1. . Loading Condition 1
- 4.3.2. . Loading Condition 2
- 4.3.3. . Loading Condition 3
- 4.3.4. . Repeatability of Test Conditions
- 4.4. Comparison to Target Forces
- 5. Surface Wear Measurements
- 5.1. Laser Scanner
- 5.1.1. . Results and Discussion
- 5.2. DALEK
- 6. Conclusions
- References
- Appendix A Visual Surface Rating
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