| 水泥对乳化沥青混合料路用性能的影响 |
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| 引用本文： | 王振军,杜少文.水泥对乳化沥青混合料路用性能的影响[J].武汉理工大学学报(交通科学与工程版),2009,33(3):596-599. |
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| 作者姓名： | 王振军 杜少文 |
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| 作者单位： | 1. 西北工业大学材料学院,西安,710072;长安大学材料科学与工程学院,西安,710061
2. 长安大学材料科学与工程学院,西安,710061 |
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| 摘 要： | 针对乳化沥青混合料路用性能特点,研究不同水泥剂量时,乳化沥青混合料在7 d和28 d龄期的路用性能变化规律.采用SEM,EDAX和Zeta电位仪等分析其机理.结果表明:乳化沥青混合料马歇尔稳定度、静压强度、回弹模量、动稳定度及冻融劈裂比等随水泥剂量增加而增大;在一定范围内,水泥剂量增加,混合料低温劈裂强度增大,但脆性增加,较合理水泥剂量为混合料重量的3.0%.水泥水化硅酸钙(C-S-H)等水化产物能够提高混合料Zeta电位,增加Ca,si元素数量,减少自由沥青比例,从而增强浆体致密性,减小浆体与集料界面距离,改善混合料路用性能.
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| 关 键 词： | 乳化沥青混合料 水泥 路用性能 机理分析 |
Effects of Cement on Road Performances of Emulsified Asphalt Mixtures |
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| Wang Zhenjun,Du Shaowen.Effects of Cement on Road Performances of Emulsified Asphalt Mixtures[J].journal of wuhan university of technology(transportation science&engineering),2009,33(3):596-599. |
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| Authors: | Wang Zhenjun Du Shaowen |
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| Institution: | School of Materials Science;Northwestern Polytechnical University;Xi'an 710072;School of Materials Science & Engineering;Chang'an University;Xi'an 710061 |
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| Abstract: | Aiming at the characters of road performance of emulsified asphalt mixtures,the rules of road performance of the mixtures with different cement dosages at 7 days and 28 days were studied and its mechanisms were analyzed with some micro-test apparatuses,such as SEM,EDAX and Zeta potential apparatus.The results indicate that marshall stability,static compression strength,compression bound module,dynamic stability and frost-thaw splitting strength ratio are all enhanced with increase of cement dosage.Within a ... |
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| Keywords: | emulsified asphalt mixtures ordinary Portland cement road performance mechanism analysis |
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