熱鑄性瀝青混凝土(Gussasphalt，簡稱 Guss)主要應用於鋼床鈑橋樑，以高流動性及零孔隙為設計目標保護鋼床鈑。Guss的強度主要與瀝青膠漿有關，本研究首先針對Guss膠漿探討基本性質，再於試驗室拌和模擬老化，進行Guss基本工程性質試驗以及應變控制疲勞試驗，以分析高溫車轍、定義疲勞壽命之結果，供作Guss之鋪面材料與施工規範參考。
Guss膠漿研究結果顯示，千里達湖瀝青(T.L.A.)和石粉含量的增加以及拌和時間造成的老化都會使膠漿的勁度上升，但老化對相位角造成的影響比T.L.A.和石粉含量對相位角的影響明顯；使用不同瀝青作為黏結料拌和T.L.A.後在膠漿的性質也有所差異。Guss瀝青混凝土研究結果顯示，溫度及瀝青含量差異對於Guss的流動性敏感性相當高，瀝青含量對於動態穩定值影響較為明顯；由疲勞試驗可得知，Guss之疲勞壽命高於傳統瀝青混凝土；在定義疲勞壽命方面，應用傳統疲勞壽命、勁度變化曲線等定義，所得之疲勞壽命皆有一致性。工程實際案例以國道6號國姓橋作為分析探討的對象，對國內在 Guss 材料性質、配比設計與施工方面的技術提出解釋說明，回饋現有 Guss 之施工規範。

Gussasphalt (Guss) is mainly used in the steel deck bridge, of which designed goals are the high fluidity and zero porosity to protect steel deck . The strength of Guss is mainly related to asphalt mastic. Therefore, this study firstly focused on Guss paste to investigate its basic properties, and then stimulated the aging effect on its mixing in the lab in order to implement the basic engineering property testing and strain-controlled fatigue testing for Guss. In addition, the results of the high-temperature rutting analysis and the fatigue life definition could be provided as the reference for the pavement material and construction specifications for Guss.
The research results of Guss paste indicated that the increase of Trinidad Lake Asphalt (T.L.A.) and aggregate content and the aging effect resulted from the mixing time would increase the stiffness of mastic; however, the aging effect on the phase angle was more significant than T.L.A. and aggregate content to the phase angle. Moreover, different types of asphalt were applied to be the binding materials to mix with T.L.A., and there’re several differences existed in the paste properties. The study results of Gussasphalt showed that differences in temperature and asphalt content had high sensibility to Guss fluidity, and the asphalt content had a significant effect on the dynamic stability. Furthermore, the results of fatigue test showed that Guss’s fatigue life was longer than traditional asphalt mixtures. In terms of defining fatigue life, it should be based on the definition of traditional fatigue life and stiffness change curve to obtain a consistent fatigue life. The actual engineering case, Guoxing Bridge of National Freeway No. 6, is adopted as the subject for analysis and investigation, in order to propose the explanation and introduction to domestic Guss material property, mix design and engineering technology, as references to the engineering specifications of current Guss construction.

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