SBS改性沥青与石料的剪切性能

发布时间：2018-03-12 09:34

本文选题：SBS改性沥青　切入点：石料　出处：《江苏大学学报(自然科学版)》2017年01期 　论文类型：期刊论文

【摘要】：针对水煮法评价SBS改性沥青与石料间黏附性的局限性,以沥青与石料的黏结机理分析为基础,设计了基于剪切试验的沥青与石料黏附性评价方法,提出了以剪切强度作为黏附性定量评价指标,通过剪切试验,验证了剪切强度指标的可行性,分析了SBS改性剂类型、掺量和试验温度对SBS改性沥青与石料黏结作用的影响.结果表明:SBS的掺入显著改善了沥青与石料的黏结作用;随SBS掺量的增加,改性沥青与石料的黏结作用有明显的增大,当掺量为4%时,SBS改性沥青与石料的剪切强度较基质沥青提高约100%;同时,也说明剪切强度指标可定量评价沥青与石料的黏结效果,从而为改性沥青的性能评价和质量控制提供参考.
[Abstract]:In view of the limitation of water boiling method in evaluating the adhesion between SBS modified asphalt and stone, based on the analysis of the adhesion mechanism between asphalt and stone, a method for evaluating the adhesion of asphalt and stone based on shear test was designed. The shear strength is used as the quantitative evaluation index of adhesion. The feasibility of the shear strength index is verified by shear test, and the type of SBS modifier is analyzed. The effect of the content of SBS and the test temperature on the adhesion between the modified asphalt and the stone was studied. The results showed that the addition of SBS significantly improved the adhesion between the asphalt and the stone, and with the increase of the content of SBS, the adhesion between the modified asphalt and the stone increased obviously. The shear strength of SBS modified asphalt and stone is about 100% higher than that of base asphalt when the content is 4%, and it also shows that the shear strength index can quantitatively evaluate the adhesion effect between asphalt and stone. It provides reference for performance evaluation and quality control of modified asphalt.
【作者单位】：长安大学特殊地区公路工程教育部重点实验室;河南省周口市公路管理局;福建省晋江市住房和城乡建设局;
【基金】：中央高校基本科研业务费专项资金资助项目(310821165023)
【分类号】：U414

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