| 冻融与腐蚀耦合作用下沥青混凝土性能研究 |
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| 引用本文： | 熊锐,陈拴发,关博文,丛培良,马莉莉.冻融与腐蚀耦合作用下沥青混凝土性能研究[J].武汉理工大学学报,2011(2):72-76. |
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| 作者姓名： | 熊锐 陈拴发 关博文 丛培良 马莉莉 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室;长安大学材料科学与工程学院; |
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| 基金项目： | 国家自然科学基金(50978031); 长安大学基础研究主持计划专项基金(CHD2010ZY014) |
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| 摘 要： | 国内外对冻融循环与硫酸盐腐蚀耦合作用下沥青混凝土的性能鲜有研究。鉴于此,在10%Na2SO4溶液加速劣化条件下采用真空饱水冻融劈裂试验,以冻融腐蚀因子评价沥青混凝土在冻融与腐蚀耦合作用下的性能变化规律。试验结果表明硫酸盐腐蚀加剧了冻融循环对沥青混凝土的破坏作用。SEM微观分析表明硫酸盐溶液较水溶液更易于侵入沥青膜与集料界面及沥青混凝土空隙中,并在冻融条件下发生结冰膨胀导致界面强度降低和裂缝的产生与扩展是沥青混凝土性能衰减的主要原因。水镁石纤维具有优良的稳定效应、界面增强效应和加筋桥接效应,掺加水镁石纤维可以有效提高沥青混凝土抗冻融腐蚀性能。
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| 关 键 词： | 道路工程 沥青混凝土 冻融循环 硫酸盐腐蚀 水镁石纤维 |
Research on Performance of Asphalt Concrete Under the Action of Freeze-thaw and Corrosion |
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| XIONG Rui,CHEN Shuan-fa,GUAN Bo-wen,CONG Pei-liang,MA Li-li.Research on Performance of Asphalt Concrete Under the Action of Freeze-thaw and Corrosion[J].Journal of Wuhan University of Technology,2011(2):72-76. |
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| Authors: | XIONG Rui CHEN Shuan-fa GUAN Bo-wen CONG Pei-liang MA Li-li |
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| Affiliation: | XIONG Rui1,CHEN Shuan-fa2,GUAN Bo-wen1,CONG Pei-liang2,MA Li-li2(1.Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang' an University,Xi' an 710064,China,2.School of Materials Science and Engineering,Chang'an University,Xi'an 710061,China) |
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| Abstract: | Few research has been done on the performance of asphalt concrete under the action of freeze-thaw and sulfate corrosion at home and abroad.In view of that,a series of accelerated deterioration tests through vacuum water-saturated freeze-thaw splitting test were carried out in 10% Na2SO4 solution,and freeze-thaw corrosion factor was brought in to evaluate the performance of asphalt concrete.The test results showed that the attenuation of the performance of asphalt concrete in sulfate solution is more severe ... |
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| Keywords: | road engineering asphalt concrete freeze-thaw cycle sulfate corrosion brucite fiber |
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