| 英文摘要 |
The project covers three dimensions: (1) Research and analyze the promotion of the scrap tire-based asphalt-rubber technique. Both the domestic and international literatures show that the materials and manufacturing process of asphalt-rubber will not have the detrimental influence on the environment. Even more, the asphalt-rubber has the advantage of increasing the driving safety, improving the engineering service efficiency and reducing the traffic noise, all of which are the convincing evidence in the promotion of asphalt-rubber. Nowadays, the prepreg (pp) is still the commonly-used auxiliary fuels in the recycling of scrap tires in Taiwan. The asphalt-rubber technique is introduced in order to increase the reusing rate of scrap tires domestically, improve the scrap tire processing technique and increase the market value of scrap tires. Although the cost of materials is estimated to be 3,764 dollars/ metric ton, higher than the cost of general asphalt-concrete, the cost benefit will begin to develop after 2 years in terms of its life cycle. Moreover, it is estimated that the maintenance project of the freeways and express ways with the high traffic volume and heavy loads will be promoted internally, showing the engineering and economic benefits. An assessment of the influence of asphalt-rubber after introduction to the domestic market is also conducted. According to the result, the transferring rate of renewable energy is set to be 1.3% at the initial stage. It is expected to reach 12.4% in the long term, leading to the feasibility of promotion. (2) Analyze the reusing and manufacturing technique of the asphalt-rubber from the domestic scrap tires and the preparation for the technological introduction. The introduction of the asphalt-rubber mixing equipment plays the key role. The manufacturing process also includes the processing of the rubber powder of the scrap tires, blending in the asphalt mixing plant, construction on the field and the excavating, recycling and reusing of the asphalt-rubber. The domestic plants are equipped with the technique. The tender document, guideline of promotion by the authorities, regulation of construction, blueprint and construction manual are also compiled. The supporting plan is formulated based on the relevant regulations and suggestion in conjunction with the class-based subsidy mechanism of the recycling scrap tires and the encouragement method of using road construction in order to elevate the willingness of promotion in the future. (3) Evaluate the efficiency of carbon dioxide emission reduction through reusing the asphalt-rubber from scrap tires. The carbon dioxide emission of asphalt-rubber per ton is 34,995.7/kg. Although the figure is 7 times higher than the emission produced by the same amount of scrap tires as auxiliary fuels, it can reduce the carbon dioxide emission if the asphalt-rubber is used as the paving materials instead of normal or modified asphalt based on the evaluation of 6-year utilization period. Therefore, the asphalt-rubber is helpful to reach the goal of the internal green project.
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