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Water Quality and Hydraulic Performance of Permeable Friction Course on Curbed Sections of Highways
| 题名： | Water Quality and Hydraulic Performance of Permeable Friction Course on Curbed Sections of Highways |
| 作者： | Sampson, L. C.; Houston, A. V.; Charbeneau, R. J.; Barrett, M. E. |
| 关键词： | Roads##Safety##Hydrology##Roadside hazards##Barriers##Highway engineering##Culverts##Safety engineering##Hydraulic engineering##Storm water runoff##Water quality## |
| 摘要： | As the populations of cities such as Austin continue to increase, land development is increasing across the United States and throughout the world. This growing trend in urbanization leads to natural land cover being replaced by roadways, sidewalks, parking lots, and other impervious surfaces. These development activities have a large impact on the surrounding watershed. When rainfall is kept from infiltrating into the ground, a greater quantity of runoff with an increased peak flow is produced. The concentration and makeup of pollutants in the runoff are also largely affected by the use of impervious surfaces. Increased flow rates can lead to dangerous driving conditions while pollution entering water bodies can destroy habitats and require expensive restoration. A space and cost-efficient stormwater management system that both provides safer driving conditions and prevents ecological degradation is needed. As regulations for environmental protection become more stringent, best management practices (BMPs) are being used to reduce the negative impacts of impervious services. The Texas Commission on Environmental Quality (TCEQ) requires that a BMP be implemented to remove 80% of the increases in the total suspended solids (TSS) load created by land development over the Edwards Aquifer Recharge and Contributing Zones (Texas Administrative Code, 2005). The standard practices used to meet requirements in the Austin area include a slow sand filters and vegetated filter strips. These solutions address the need for pollutant management and reduce the peak flow into receiving bodies but do nothing to improve the safety of highways during storms. In addition they require additional right-of-way and can be expensive to construct and maintain. |
| 总页数： | 103 |
| 报告类型： | 科技报告 |
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