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《Construction and Building Materials》2007,21(8):1809-1819
For the purpose of investigating the effects of bitumen grade, content of reclaimed asphalt pavement (RAP) material and ageing of RAP, this paper presents the evaluation of permanent deformation of foamed asphalt (FA) mixes by using the dynamic creep test. The mix design of WC-20 was conducted based on the gradation requirement of FA mix and RAP aggregate size. Three parameters, creep strain slope (CSS), Intercept and secant creep stiffness modulus (SCSM), were used to analyze the test results. Mean comparison and multiple analysis of variance (MANOVA) reveal that bitumen grade significantly affects CSS, whilst content and ageing of RAP would have insignificant effect on CSS. High bitumen grade may help FA mixes on the reduction of susceptibility to permanent deformation. Test results reflect that variances of CSS, Intercept, and SCSM are large. There is a good exponential relationship between CSS and SCSM, however no correlation between CSS and air void is found. Comparison of test results between FA mixes and hot asphalt mixes exhibits that susceptibility and creep strength of FA mixes are better than those of selected hot asphalt mixes. 相似文献
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《Planning》2016,(5):159-160
<正>一、理论层面:新黑格尔主义的马克思主义视角下的异化问题方珏:塞耶斯教授,您好!非常感谢您接受这一次访谈!您的《马克思主义与人性》简体中文版2008年出版后,在中国学界引起很大关注。当时中国学界对于英语世界马克思主义哲学的关注主要侧重于分析马克思主义,您的著作给我们打开了英 相似文献
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就高等级公路沥青面层摊铺中冷、热接缝施工方法的异同作了对比,介绍了以热接缝代替冷接缝的施工方法,并对其施工工艺水平和施工方法作了阐述,指出了该方法具有的优越性。 相似文献