| 研究生: |
張文政 Chang, Wen-Cheng |
|---|---|
| 論文名稱: |
硫磺助溶劑對高分子改質瀝青之影響 |
| 指導教授: |
方一匡
Fang, I-Kuang 陳建旭 Chen, Jian-Shiuh |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 論文出版年: | 2004 |
| 畢業學年度: | 92 |
| 語文別: | 中文 |
| 論文頁數: | 117 |
| 中文關鍵詞: | 高分子改質瀝青 、相分離 、硫磺 、苯乙烯-丁二烯-苯乙烯 、儲存穩定性 |
| 相關次數: | 點閱:87 下載:1 |
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臺灣地處亞熱帶,氣候多變,使得鋪面施工現場需將拌合完成的改質瀝青先行熱儲存,然瀝青與高分子材料為不相溶的二種物質,儲存時間過長會有相分離的現象產生。
我國CNS 14184 改質瀝青規範係根據SBS 為主而制定,因此本研究在AC-20 基底瀝青中,依不同比例添加高分子改質劑SBS,並使用硫磺做為助溶劑,模擬生產、儲存的過程,經由傳統試驗、電子顯微觀測及質流試驗,藉以了解改質瀝青內部相容性、儲存性與力學行為;並依Mooney 黏度方程式以及Kerner 微粒填充複合材料方程式,預測改質瀝青的G*值。
研究結果指出:添加相對於SBS 重量百分比含量3%的硫磺助溶劑能提升SBS 改質瀝青的軟化點、彈性回復率以及黏度,並能加強韌性和黏性,但不影響其抗拉強度;經由穿透式電子顯微鏡TEM 發現,3%以上的硫磺助溶劑可使SBS 改質瀝青有更佳的均質性;質流試驗的結果說明硫磺助溶劑可降低瀝青黏結料的損失正切tanδ,有助於防止鋪面車轍的發生;相位離析試驗顯示,3% SBS 改質瀝青的儲存穩定性較佳,而添加3%的硫磺助溶劑,可使5%、7% SBS 改質瀝青離析後頂層與底層的軟化點差值小於2.5℃,且分離指數降至0.01 以下,表現良好的儲存穩定性。
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