| Summary: | 碩士 === 國立成功大學 === 土木工程學系碩博士班 === 90 === Since Taiwan is located in the subtropics, high temperature, high humidity, and heavy rainfall are the most significant characteristics of the weather in Taiwan. From the perspective of pavement engineering, the draining capability and the moisture damage resistance play important roles in pavement. However, traditional dense-graded are not allowed for water infiltration, principally. Thus, in 1987, “drainage porous asphalt” was adopted in Japan to improve its runway of automobile race from being moist and slippery. And it was highly successful. Nevertheless, among all the drainage pavements, most of them are coarse aggregates, with small area of surface and 15%~25% high air void. The properties of asphalt need to be closely considered. It has to provide better toughness, resistance to lengthen and thicker asphalt film. Most of all, it must also have stripping resistance and high air void. Therefore, the focus of this research is the nature properties of asphalt.
In this research, commonly used asphalts will be the focus of our evaluation. Many kinds of asphalt (penetration 60/70, CNS polymer-modified asphalt III, Japanese modified high viscosity asphalt) will be chosen to use in coordination of European and Japanese drainage-graded aggregate. The Guideline of Japan Drainage Paving Techniques will be used to determine the best asphalt contents for test samples. The experiment of the properties of asphalt includes: viscosity of the asphalts with different percentage of lime and gypsum; toughness testing; permeable testing of Marshall samples, stripping testing. Furthermore, wheel-tracking testing will be considered to the base of asphalt deformation resistance.
In brief, the purpose of this research is to compare the application of 3 different asphalts in the water inroad resistance ability of drainage pavement.
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