摘要(英) |
Due to the economic growth in recent years, the road network system has becoming more developed. Taiwan government put the enhancement of road quality as their main policy and pushed several road grading projects or related projects. The main purpose is to avoid damage caused by road traffic and enhance driving satisfaction, which makes pavement maintenance and inspection more and more important. Therefore, the quality of repair materials is also an important factor in the quality of the road surface; Currently Taiwan doesn’t have testing method and specification for patching materials. This research collected Taiwan existing crack repair materials and pothole patching materials. By applying patching materials on damaged specimens and perform laboratory experiments to understand the performance and durability of repaired pavement. Damage to asphalt concrete pavement caused by moisture is considered to be a serious problem in Taiwan. This research evaluate the performance of cracks repair by putting specimens into 60℃ water with different days. The performance tests includes Indirect Tensile Strength Test, TSR Test, Resilience Modulus Test and Creep Modulus Test. The test results shows that repair cracks can slow down the speed of water invasion and prevent water cause more damage to pavement structure. In order to simulate pothole repair, this research use room temperature asphalt concrete to repair damaged specimens and perform Wheel track rutting test results. Using rolling times and rutting depth to simulate the remaining life of repaired specimens. The results showed that each specimens have remaining life of more than 2 years after being repaired. |
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