| dc.description.abstract | The plastic material of PET bottles is polyethylene terephthalate (C10H8O4)n, which is the most important variety of thermoplastic polyester. The English name is Polyethylene terephthalate, or PET for short, commonly known as polyester resin. In recent years, the awareness of environmental protection has risen. Since the waste produced by PET cannot be degraded, it has caused environmental pollution and ecological catastrophe. The recycling and reuse of plastic bottles has been overly beautified, which has also caused the use of domestic plastic bottles to remain high for a long time. The year before last (2021) hit a record high of 115,000 metric tons and 5.2 billion bottles, which is equivalent to filling three and a half 101 buildings .
There have been successful cases of dissolving PET with special fatty acid and putting it into asphalt concrete pavement with powdery modifier in foreign countries. Therefore, how to use the successful experience abroad as a basis and then apply it to the research and development of pavement in Taiwan is an urgent task at present. .
This research paper selects the commonly used combination design DGAC from the expressway, and adds different contents of PET asphalt modifier, and uses AC-20 asphalt as asphalt as the base asphalt concrete to compare the rutting effect evaluation of asphalt concrete with different contents. In this study, the above-mentioned PET was added to DGAC for mixing at 0.5%, 0.75%, and 1% additions, and whether the test body met the set porosity was determined, and then the wheel track test in Hamburg was used to test the effectiveness of asphalt concrete. This test asphalt concrete is simulating the actual conditions of the on-site vehicle. Compare the final rutting depth with the final rolling times and subsidence to evaluate its anti-rutting ability.
Another test uses the asphalt mixture plastic flow resistance test CNS 12395 A3293 (1988) to test the optimum oil content of the general DGAC and 3 kinds of PET with different additions in the Marshall fit design method, and take out enough weight of asphalt to mix with the quartering method After ramming the Marshall test body, record whether the height reaches the optimum height after compaction of the test body is within the range of 63.5 ± 1.3mm, and at the time when the lower limit of the tamping temperature is reached, the Marshall stability value and fluidity value are carried out test. (Samples should not exceed 2 hours from the completion of sample division to the temperature of the ramming oven to the completion of ramming) Marshall stability values of asphalt concrete with various PET contents were obtained using Marshall test
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specimens to compare the optimum oil content of asphalt concrete with different PET content The mechanical behavior changes when it breaks. The results show that DGAC 0% and PET DGAC 0.5%, 0.75% and 1% asphalt concrete with four gradations increase with the addition of PET, the viscosity increases, and the anti-rutting ability is better. It shows that the anti-rutting ability of the road surface is related to the amount of PET added. In addition, DGAC 0% and PET DGAC 0.5%, 0.75% and 1% in the Hamburg wheel track test use the same grade of cement AC-20, but DGAC with PET modifier The anti-rutting ability is better than DGAC 0%, which also shows that in addition to the same grade as the cement, the wheel track test in Hamburg is also significantly affected by the amount of PET added. Finally, the results of Marshall′s stability value are compared with the wheel track test results in Hamburg. When the content of PET modifier increases, the accumulation of rutting depth will decrease, and the results of Marshall′s stability value test also increase with the increase of PET modifier content, the viscosity increases and the strength increases. The result is the same as the Hamburg wheel track test result. | en_US |