喷气激光检测技术在沥青粘结剂中的应用

IF 3 Q2 CONSTRUCTION & BUILDING TECHNOLOGY
Zhijun Wang, Xiaoming Huang, Rong Ma
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引用次数: 0

摘要

摘要本文提出了一种快速、便捷的沥青粘结剂检测技术,该技术基于空气增压和激光技术来检测沥青的瞬态变形和蠕变恢复。以国内常用的5种沥青及改性沥青为研究对象,采用侵彻试验、动态剪切流变试验(DSR)、多重应力蠕变与恢复试验(MSCR)及提出的试验技术对沥青的性能进行了测试分析。结果验证了所提测试技术的可行性以及传统测试与所提测试技术之间的相关性。结果表明,所提出的试验技术对不同种类沥青具有较好的判别能力,能有效反映沥青的性能差异。新的测试协议类似于渗透测试。最大变形指数与穿透指数呈显著相关。相关系数均在0.8以上,p值远小于0.01。它可以作为渗透测试的可能替代方案。与动剪试验相比,提出的新试验方法相对方便、快捷。最大挠度指数与复合剪切模量G *呈线性相关,恢复指数与相位角的相关系数在0.8以上,表明所提出的新试验与DSR试验具有显著相关性。MSCR试验的蠕变恢复指标与新试验方法的恢复数据具有良好的相关性。研究结果为国内沥青的性能测试与评价提供了新的解决方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Application of the Air-Jet Laser Detection Technology for Asphalt Binders
Abstract A fast and convenient technique for Asphalt Binders was proposed in this paper, which was based on air-jet pressurized and laser to detect the transient deformation and creep recovery of asphalt. Taking five kinds of asphalt and modified asphalt commonly used in China as the research objects, the performance of asphalt were tested and analyzed by adopting the Penetration Test, Dynamic Shear Rheological (DSR) Test, Multiple Stress Creep and Recovery (MSCR) Test and the proposed test technology. The results verified the feasibility of the proposed test technology and the correlation between the traditional tests and the proposed test technology. The results demonstrated that the proposed test technology had good discrimination ability for different kinds of asphalt and could effectively reflect the performance differences. The new test protocol was similar to the Penetration Test. There was a significant correlation between the maximum deformation index and penetration index. The correlation coefficient was above 0.8, and the p value was much less than 0.01. It could be used as a possible alternative to the Penetration Test. The proposed new test was relatively convenient and fast compared with the dynamic shear test. There was a linear correlation between the maximum deflection index and the complex shear modulus G *, and the correlation coefficient between the recovery index and the phase angle is above 0.8, which indicated that the proposed new test and the DSR test had a significant correlation. There was also a good correlation between the creep recovery index of MSCR test and the recovery data of the proposed new test method. The research results provided a new solution for the performance test and evaluation of asphalt in China.
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来源期刊
International Journal of Pavement Research and Technology
International Journal of Pavement Research and Technology Engineering-Civil and Structural Engineering
CiteScore
4.90
自引率
0.00%
发文量
120
期刊介绍: The objective of the International Journal of Pavement Research and Technology is to provide a platform to promote exchange of ideas among pavement engineering communities around the world. The journal attempts to disseminate information on all aspects of pavement engineering and technology developed through research and practical experiences.The journal is published bi-monthly, in January, March, May, July, September, and November each year (six issues in each volume). Contributions in the form of research paper, review, or discussions will be considered for publication. To cover a wide range of pavement engineering disciplines and industrial applications, the journal includes the following topics: Advanced analytical and computational techniques in pavement engineeringPavement mechanics and pavement designPavement construction, performance, management, maintenance, and rehabilitation techniquesPavement materialsPavement recyclingPavement surface and subsurface drainageEnvironmental issues associated with pavement materials and constructionAccelerated and full-scale pavement testingNon-destructive testingInnovative design method and practicePavement-vehicle interaction and safety issuePavement PreservationPavement Instrumentation
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