Research on Water Damage of Warm Mix Recycled Asphalt Pavement
王正勇WANG Zheng-yong
(曲靖公路局,曲靖655000 )
( Qujing Highway Bureau, Qujing 655000, China)
摘要:再生温拌沥青混合料具有WMA技术和RAP的优点,但是,在服役温度下,再生温拌沥青混合料中的水损坏是研究者关注的焦点,目前尚未对其进行全面深入的研究.因此,为了研究所有服役温度下,水分对再生温拌沥青混合料的性能的影响,在室内采用弹性模量试验,间接拉伸疲劳破坏试验(IDT)半圆形弯曲(SCB)试验等方法对混合料进行了研究。结果表明,尽管含有RAP的WMA混合料具有亲水性以及对水分敏感性的集料和老化的结合料,但表现出良好的抗水损坏能力.因此,再生温拌沥青混合料可推荐用于易发水损坏环境和自然资源有局限性的区域。
Abstract:Regenerated wam nix asphalt mixture has the advantages of WMA technology and RAP.However，water damage inrecycled warm mix asphalt mixture at service temperature is the focus of researchers" attention, and comprehensive and in-depth researchhas not yet been conducted. Therefore, in order to study the effect of moisture on the performance of reeycled warm mix asphalt mixture atall service temperatures, methods such as elastic modulus test, imdlirect tensile fatigue failure test (DT), and semi circular bending (SCB)testwere used indoors to studly the mixture. The results indicate that although the WMA mixture containming RAP has hydrophilicity andsensitivity to moisture in aggregates and aged binders, it exhibits good resistance to water damage. Therefore, reoycled warm mix asphaltmixtures can be recommended for use in areas prone to water damage and limited natural resources.
关键词:温拌沥青混合料;再生沥青混合料;水损坏
Key words: warm mix asphalt mixture; recycled asphalt mixture; water damage
价值工程-文章出处：王正勇.温拌再生沥青路面水损坏研究[J].价值工程,2023,42(20):145-148. |
