检索结果-南通市图书馆

Investigation of internal phases of linear sbs modified bitumen at the nanoscale using AFM PF-QNM

Journal of Traffic and Transportation Engineering(English Edition) 2023年第3期10卷 399-412页

作者： Chengwei Xing Liping Liu Wei Jiang Jinhuan Shan Jingjing Xiao Dongdong Yuan Wangjie Wu Key Laboratory of Special Area Highway Engineering of Ministry of Education Chang'an UniversityXi'an 710064China School of Highway Chang'an UniversityXi'an 710064China Key Laboratory of Road and Traffic Engineering of Ministry of Education Tongji UniversityShanghai 201804China School of Civil Engineering Chang'an UniversityXi'an 710064China

Currently,few studies explore the internal phases of styrene-butadiene-styrene(sbs)modified bitumen at the nanoscale,though the surface phases of sbs modified bitumen have been deeply understood through a lot of research.The present study uses the atomic force microscopy(AFM)peak force quantitative nanomechanical mode(PF-QNM)to investigate the nanomechanical properties of the interior of linear sbs modified bitumen and corresponding mastics at the nanoscale.Firstly,the suitable experimental methods for the interior of bitumen and mastics are explored.Then,the phase relationship between surfaces and interiors of linear sbs modified bitumen is determined by analyzing nanomechanical properties.On this basis,in comparison with the internal phases of base bitumen,the effect of modifiers on phases is deeply investigated.Finally,the internal phases of linear sbs modified bituminous mastics are further investigated.The results reveal that the interior of linear sbs modified bitumen only has two phases,which form in a manner like periphase and paraphase on the surface.In contrast to base bitumen,linear sbs modified bitumen does not create new phases and change the properties of original phases in the interior,but affects the proportion of A-phase and B-phase and presents the homogenization.Furthermore,due to the influence of preparation methods,only the bitumen area away from the fillers can be imaged by AFM PF-QNM.It can be found that the addition of mineral fillers also slightly changes the internal phase distribution of linear sbs modified bitumen,while the effect is less than that of fillers on base bitumen.

关键词： Road engineering sbs modified bitumen Internal phase AFM PF-QNM

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of Layered Double Hydroxides on Ultraviolet Aging Resistance of sbs modified bitumen Membrane

引用

Journal of Wuhan University of Technology(Materials Science) 2015年第3期30卷 494-499页

作者：徐松余剑英 XUE Lihui SUN Yubin XIE Dong State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Center for Materials Research and Analysis Wuhan University of Technology School of Materials Science and Engineering Wuhan University of Technology

Layered double hydroxides （LDHs）/styrene-butadiene-styrene （sbs） eopolymer modified bitumen was prepared by melt blending. The effect of LDHs on the ultraviolet （UV） aging behavior of sbs modified bitumen was investigated. The changes of chemical structures of modified bitumen before and after UV aging were characterized by Fourier transform infrared spectroscopy （FTIR）. The results show that LDHs obviously reduce the variation of softening point and low temperature flexibility of sbs modified bitumen under different UV radiation intensities, which indicates that the UV aging resistance performance of sbs modified bitumen is improved effectively by LDHs. Compared with sbs modified bitumen, the changes of carbonyl, sulfoxide and butadienyl of LDHs/sbs modified bitumen decrease significantly after UV aging according to FTIR analysis, demonstrating that the oxidation and degradation reactions of sbs modified bitumen were restrained effectively by adding LDHs.

关键词： sbs modified bitumen layered double hydroxides UV aging

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Effect of Organophilic Montmorillonite on Thermal-oxidative Aging Behavior of sbs modified bitumen Crack Filling Material

引用

Journal of Wuhan University of Technology(Materials Science) 2009年第4期24卷 673-676页

作者：余剑英 Key Laboratory of Silicate Materials Science and Engineering of Education Ministry Wuhan University of Technology

Styrene-butadiene-styrene （sbs） modified bitumen crack filling material with organophilic montmorillonite （OCFM） was prepared by melt blending. X-ray diffraction analysis shows that the interlayer spacing of organophilic montmorillonite （OMMT） in OCFM is widened and an exfoliated structure may be formed. Thermal-oxidative aging behavior of OCFM and sbs modified bitumen crack filling material （SCFM） was investigated. The experimental results indicate that the rate of thermal-oxidative aging of OCFM is much slower than that of SCFM, which can be attributed to barrier of exfoliated structure of OCFM to oxygen.

关键词： organophilic montmorillonite sbs modified bitumen crack filling material thermal-oxidative aging

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：