中国塑料 ›› 2025, Vol. 39 ›› Issue (4): 97-103.DOI: 10.19491/j.issn.1001-9278.2025.04.017

• 塑料与环境 • 上一篇    下一篇

废食用油再生沥青组成优化及其混合料性能研究

李东珀1(), 韩华2, 王莉1, 杨建3, 赵丹3, 景宏君4,5, 邹晓龙4,5, 张永飞4,5   

  1. 1.延安市公路局,陕西 延安 716000
    2.汉中市公路局,陕西 汉中 723000
    3.商洛市公路局,陕西 商洛 726000
    4.西安科技大学建筑与土木工程学院,西安 710054
    5.西安科技大学道路工程研究中心,西安 710054
  • 收稿日期:2024-05-20 出版日期:2025-04-26 发布日期:2025-04-23
  • 作者简介:李东珀(1979-),男,高级工程师,研究方向为公路工程, 624463838@qq.com
  • 基金资助:
    国家自然科学基金(52308466);陕西省交通科技项目(19?28K)

Composition optimization of waste cooking oil recycled asphalt and performance research of its mixture

LI Dongpo1(), HAN Hua2, WANG Li1, YANG Jian3, ZHAO Dan3, JING Hongjun4,5, ZOU Xiaolong4,5, ZHANG Yongfei4,5   

  1. 1.Yan’an Highway Bureau,Yan’an 716000,China
    2.Hanzhong Highway Bureau,Hanzhong 723000,China
    3.Shangluo Highway Bureau,Shangluo 726000,China
    4.School of Architecture and Civil Engineering,Xi’an University of Science and Technology,Xi’an 710054,China
    5.Road Engineering Research Center,Xi’an University of Science and Technology,Xi’an 710054,China
  • Received:2024-05-20 Online:2025-04-26 Published:2025-04-23

摘要:

为提高再生沥青混合料路用性能,基于响应曲面法,以废食用油掺量、苯乙烯⁃丁二烯⁃苯乙烯嵌段共聚物(SBS)改性沥青掺量和剪切温度为自变量,设计了再生沥青的制备方案。通过基本性能和流变试验,分析了自变量对再生沥青性能的影响,确定了再生沥青最佳方案。并以此为基础开展了再生沥青混合料路用性能检测研究。结果表明,再生沥青的最佳优化组合为:废食用油掺量为8.4 %,SBS改性沥青掺量为152 %,剪切温度为166 ℃。再生沥青性能指标的预测值与实际值相比,最大误差为4.5 %,在可接受的范围内。随着再生沥青路面(RAP)混合料掺量的增加,再生沥青混合料的低温抗裂性及水稳定性降低,高温稳定性能提高。相比于未掺废食用油的再生沥青混合料,掺入废食用油后再生沥青混合料的低温抗裂性和水稳定性改善显著。

关键词: 道路工程, 响应曲面法, 再生沥青, 废食用油, 路用性能

Abstract:

To improve the pavement performance of recycled asphalt mixtures, the preparation schemes of recycled asphalt were designed by using a response surface method with the contents of waste cooking oil and styrene⁃butadiene⁃styrene (SBS)⁃modified asphalt, and the shear temperature as independent variables. The influence of these independent variables on the properties of regenerated asphalt were analyzed through basic physical and rheological measurements to determine the optimization scheme of recycled asphalt. On this basis, the pavement performance was verified. The results indicated that the optimal optimization scheme for recycled asphalt was determined to be a content of waste cooking oil of 8.4 wt%, a content of SBS⁃modified asphalt of 152 wt%, and a shear temperature of 166 ℃. The maximum error between the predicted values and actual results of performance indicators of recycled asphalt was 4.5 %, which was within the acceptable limits. With an increase in the content of the reclaimed asphalt pavement (RAP), the cracking resistance and water stability of recycled asphalt mixtures decreased but their high⁃temperature stability was improved. Compared to the recycled asphalt mixtures without waste cooking oil, the recycled asphalt mixtures containing waste cooking oil showed a significant improvement in the low⁃temperature crack resistance and water stability.

Key words: road engineering, response surface method, recycled asphalt, waste cooking oil, pavement performance

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