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Implementation of Laser Scanning System for Classification of Aggregate Texture.
| 题名： | Implementation of Laser Scanning System for Classification of Aggregate Texture. |
| 作者： | Arámbula-Mercado, E.; Fernando, E.; Hu, S.; Crockford, W. |
| 关键词： | Laser-based texture measurements, Micro-texture, Dynamic Friction Tester (DFT), Friction, Skid resistance, Micro-deval abrasion |
| 摘要： | The lack of pavement friction causes vehicles to skid and run off the road (ROR). In 2016, single-vehicle ROR crashes resulted in 1,293 deaths on Texas highways. The Texas Department of Transportation (TxDOT) Highway Safety Improvement Program evaluated the cost of one roadway fatality or one incapacitating injury at approximately $3.3 million. If building better skid-resistant pavement surfaces could reduce fatalities by 1 percent, the potential annual reduction in societal cost, given the number of ROR fatalities in 2016, would be significant. With the goal of improving the measurement of aggregate characteristics and classification, this project undertook the initial implementation of the laser-based system that was developed under TxDOT Project 0-6921 to measure aggregate properties. This laser-based system was adapted to scan ring-shaped specimens specifically prepared to evaluate friction characteristics via the dynamic friction tester (DFT) as part of the Aggregate Quality Monitoring Program. Individual aggregate particles in original state or before micro-Deval (BMD) and after micro-Deval (AMD) abrasion were used to prepare the ring-shaped specimens. |
| 报告类型： | 科技报告 |
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