Evaluation of Porous Asphalt Concrete Used in Highway Performance

• Main Authors: Jiun-Yang Lai, 賴俊仰
• Other Authors: Jih-Min Shiau
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/41097277336614746543

碩士 === 國立成功大學 === 土木工程學系碩博士班 === 97 === Taiwan is a monsoon-climate country with annual rainfall of 100 days. This phenomenon makes the road which is made by traditional dense asphalt easily covered with water film or mists. In order to prevent this situation, a drainage pavement is developed. There were nine pavement test sections with five major tests in this research. The five tests consist of field permeameter, rutting, roughness, skid resistance, and noise tests. Of the five tests, the wheel tracking test was conducted in the laboratory. These experiments aimed to collect data on the following issues: the road conditions before and after open to the traffic; the different paving on the bridge deck or road embankment; comparison between the in-lab wheel tracking and field rutting test; the noise level in different road types. The research concluded that using various sections from various materials with different asphalts, gradations, asphalt contents and porosity values. In comparison between the bridge deck and the road embankment sections, the results showed no significant difference. For asphalt paving materials, the field permeameter test and rutting test results revealed that using of high-viscosity asphalt had better performance on permeability. High-viscosity asphalt had better rutting resistance than using AR-80. After one-year traffic, the International Roughness Index (IRI) of the road surface was still within the required standard, and the skid resistance ability was also in good condition of which above 50 BPN. The results of environmental noise in dense asphalt pavement and rigid pavement were more than porous asphalt pavement by as much as up to 8 dB, showing porous asphalt concrete pavement was effective to reduce noise.