【摘 要】
：
为研究废旧电池粉末改性沥青的可行性,分别将不同掺量的废旧电池粉末加入70 #沥青中,以制备废旧电池粉末改性沥青,并对比基质沥青与SBS改性沥青进行性能评价.借助X射线衍射仪(XRD)、红外光谱仪(FTIR)、扫描电镜(SEM)、原子力显微镜(AFM)等研究废旧电池粉末改性沥青的化学组成与微观结构,分析废旧电池粉末改性机理;采用三大指标、布氏黏度试验对废旧电池粉末改性沥青的常规性能指标进行测试;通过动态剪切流变仪(DSR)、多重应力蠕变(MSCR)试验评价废旧电池粉末改性沥青的流变特性;利用车辙试验(70℃
【机 构】
：
广西大学土木建筑工程学院,广西南宁530004;广西大学工程防灾与结构安全教育部重点实验室,广西南宁530004;广西特殊地质公路安全工程技术研究中心,广西南宁530004;国家高性能计算中心南宁分中
论文部分内容阅读
为研究废旧电池粉末改性沥青的可行性,分别将不同掺量的废旧电池粉末加入70 #沥青中,以制备废旧电池粉末改性沥青,并对比基质沥青与SBS改性沥青进行性能评价.借助X射线衍射仪(XRD)、红外光谱仪(FTIR)、扫描电镜(SEM)、原子力显微镜(AFM)等研究废旧电池粉末改性沥青的化学组成与微观结构,分析废旧电池粉末改性机理;采用三大指标、布氏黏度试验对废旧电池粉末改性沥青的常规性能指标进行测试;通过动态剪切流变仪(DSR)、多重应力蠕变(MSCR)试验评价废旧电池粉末改性沥青的流变特性;利用车辙试验(70℃)与短期老化前后的浸水马歇尔试验分析废旧电池粉末改性沥青混合料的高温稳定性及老化前后的水稳定性.研究结果表明:废旧电池粉末以C为主要成分,并含有极少量金属氧化物,其颗粒表面有较多的褶皱与凹槽;废旧电池粉末改性沥青表面存在“蜂巢”结构,且随着掺量增加,其粗糙度呈上升趋势,沥青针入度逐渐降低,软化点提升,延度略微降低,黏度逐渐增加;相同温度下,随着掺量增加,废旧电池粉末改性沥青的动态剪切模量G*明显提高且始终高于70 #沥青,但略低于SBS改性沥青;废旧电池粉末改性沥青混合料动稳定度与残留稳定度逐渐增大;废旧电池粉末改性沥青的方式属于物理共混,该成分可使沥青的高温性能得到改善,改善程度未及SBS改性沥青,但相差幅度不大;废旧电池粉末改性沥青表面粗糙程度较大,意味着其拥有较大的比表面积,能增强沥青与集料间的黏附能力,从而提高了沥青混合料的高温稳定性与水稳定性.
其他文献
随着科学技术的不断进步,遥感技术在地质勘查中的作用也越来越重要,突出表现在地质构造信息及矿化蚀变信息的获取。饰面用花岗岩成矿特点主要体现在3个方面:一是岩石的完整性,主要表现在节理裂隙的发育程度;二是品种、装饰性;三是物性特征。根据饰面用花岗岩成矿特点,遥感技术主要可以有效解决饰面用花岗岩矿勘查中遇到的地质构造、岩性分布等问题,应用在饰面用花岗岩的地质勘查中,能够起到更快速、经济的绿色评价饰面用花
Foundational indigo shades provide a sense of reassurance for their timeless reverence in colors ranging from dark to vibrant to light. Deep indigo holds its iconic position for its genuine appeal in both men\'s and women\'s looks. Dark, brilliant blu
Presenting the full color spectrum for Activewear Spring/Summer 2023 and Fall/Winter 2024. Ev-erything is different now and this notion is reflected deeply in color and color application.rnWhile still mainly neutral in orientation, our collec-tion of core
Since early August, domestic listed apparel compa-nies have released their reports for the first half of 2021.As of August 27, a total of 27 enterprises disclosed in thereport, 25 listed apparel companies achieved growth inoperating revenue and net profit
According to the 2021 World Trade Statistics Reviewissued by the World Trade Organization, due to the impactof the pandemic, the world trade in goods and servicesdecreased from USD 24 trillion in 2019 to USD 22 trillionin 2020, including goods trade and s
In August, the national economy continued to recover,the main macro indicators were within a reasonable range,the foundation for stable economic operation was continu-ously consolidated. From an industry perspective, in August,the production of cotton tex
According to the results of the China Commercial Circulation As-sociation of Textile and Apparel (CATA) show that in September 2021, thenational textile and apparel specialized market manager\'s prosperity indexwas 53.66, an increase of 3.28 percentage
Hanfu is the traditional nationalcostume of han people, which hasbeen passed down for thousands ofyears. It is also an important part of Chinese traditional culture. Recent years, wearing Hanfu is becoming a new culture trend. People\'s recogni-tion of
橡胶沥青作为一种环保型路面材料,在过去几十年里已经得到了广泛的应用.为进一步推动、推广橡胶沥青及橡胶沥青混合料的应用,掌握其发展现状并梳理发展需求,系统汇总了胶粉应用于沥青改性技术中的指标要求、制备工艺、性能评价与工程难题.首先,回顾了国内外胶粉应用于沥青改性技术的发展历程,并对国内外相关技术规范中胶粉的相关物理技术指标要求进行了总结分析.其次,以1.0 mm为粒径界限,对比分析了胶粉在沥青和沥青混合料中的干法工艺和湿法工艺,揭示了胶粉在沥青中的改性机理,包括沥青胶体结构变化、胶粉颗粒体积溶胀、胶粉颗粒脱
The recovery of China\'s garment industry has weak-ened, and the growth rate of major economic indicatorssuch as production, sales, investment and benefit hasdropped slightly affected by factors such as the complexand severe international environment, t