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郭    峰

（ 洛陽理工學院 土木工程學院 ，河南 洛陽 471023)

摘   要 ：為改善瀝青混合料水穩定性 ，采用消石灰和水泥兩種抗剝落劑改良瀝青混合料，并通過室內試驗 研究抗剝落劑對瀝青混合料水穩定性影響規律 。結果表明，摻抗剝落劑的瀝青混合料抗水損害能力提高 ，抗剝落劑摻量每增加 1% ,  瀝青混合料凍融劈裂抗拉強度比降低不超過 2. 6% ;  消石灰摻量1%時，瀝青混合料殘留穩定度最大，較未 摻抗剝落劑的瀝青混合料殘留穩定度提高 11 . 4%以上；抗剝落劑可減小瀝青混合料浸水飛散損失，抗剝落劑摻量≥1%時，石灰和水泥摻量增加 1% ,  瀝青混合料浸水飛散損失分別平均增大 9. 5% 、9. 6% 。

關鍵詞 ：瀝青混合料 ；消石灰 ；水泥 ；水穩定性 ；試驗研究

  中圖分類號 ：U414           

  文獻標志碼 ：A            

  文章編號 ：1005- 8249  (2023)   06- 0076- 05

  DOI : 10. 19860/j . cnki . issn1005- 8249. 2023 . 06. 012

GUO Feng

( School of Civil Engineering ,   Luoyang Institute of Technology ,   Luoyang 471023 ,   China)

   

Abstract: In order to improve the structural water stability of the asphalt mixture, the asphalt mixture was improved by two anti-spalling agents of lime and cement, and the influence of the anti-spalling agent on the water stability of the asphalt mixture was studied through indoor experiments. The results show that the water damage resistance of asphalt mixtures mixed with anti-spalling agents under freeze-thaw conditions is improved, and the tensile strength ratio of asphalt mixtures with anti-spallant dosage of 1% is significantly improved. The residual stability of the asphalt mixture is the largest when the amount of lime is 1% or 2% of the cement mixture, and the residual stability of the asphalt mixture is increased by more than 9.2% compared with the residual stability of the asphalt mixture without anti-spalling agent; Anti-spalling agent can reduce the loss of water immersion and scattering of asphalt mixture, when the amount of anti-spalling agent is ≥ 1%, the amount of lime and cement is increased by 1%, and the loss of water immersion of asphalt mixture is increased by an average of 9.5% and 9.6%, respectively.

 Keywords :  asphalt mixtures ;  lime removal;  cement;  water stability;  experimental studies

作者簡介 ：郭峰  ( 1979—) ,   男 ，碩士研究生 ，講師 ，研究 方向 ：道路與橋梁工程。

收稿日期 ：2023- 06-25