| 硅藻土对SBS改性沥青技术性能的影响 |
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| 引用本文： | 王金山,;刘觊,;乌云,;张燕丽.硅藻土对SBS改性沥青技术性能的影响[J].中南公路工程,2014(6):345-348. |
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| 作者姓名： | 王金山 ;刘觊 ;乌云 ;张燕丽 |
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| 作者单位： | [1]呼伦贝尔道路桥梁建筑有限责任公司,内蒙古呼伦贝尔021000; [2]内蒙古交通建设监理咨询集团有限公司,内蒙古呼伦贝尔021000 |
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| 摘 要： | 硅藻土在改性沥青中的分散显著改变改性沥青技术性能,利用XRD,SEM,荧光显微镜等试验手段从微观尺度揭示了硅藻土/SBS改性沥青的改性机理,研究了硅藻土掺量对SBS改性沥青技术性能的影响,得到改善SBS改性沥青技术性能的最佳掺量。结果表明：硅藻土与SBS改性沥青融为一体,掺入1%的硅藻土可以提高SBS改性沥青软化点7.61%,其针入度下降3.76%,延度下降9.86%;老化后软化点提高5.68%,针入度下降3.45%,延度下降22.1%。
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| 关 键 词： | 改性沥青 硅藻土 掺量 软化点 |
Effect of Diatomite on Behavior of SBS Modified Asphalt |
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| Institution: | WANG jinshan, LIU Kai , WU Yun, ZHANG YanLin ( Hulun Buir Road and Bridge Construction Co. , Ltd. , Hulun Buir, Inner Mongolia 021000, China ; Inner Mongolia Traffic Construction Supervision Consulting (Group) Co. Ltd. , Hulun Buir,Inner Mongolia 021000, China) |
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| Abstract: | Disperse condition of diatomite in asphalt can change the technical characteristic of modified-asphalt significantly. The effect of diatomite dispersion on the behavior of SBS modified asphalt were examined through some micro testing techniques（such as XRD, SEM and fluorescence microscope test,etc）. The influence of diatomite proportion on the property of SBS modified asphalt was investigated. The optimum additive was recommended. The results show that the diatomite and SBS modified asphalt merged together. Comparing with the normal modified asphalt with 3% SBS dosage, the softening point of modified asphalt will increase 7.61%, the penetration will descend 3.76%, the ductility will descend 9.86, the softening point after aging test will increase 5.68 % , the penetration after aging test will descend 3.45%, the ductility after aging test will descend 22.1% when adding 1% dosage of diatomite. |
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| Keywords: | modified asphalt diatomite proportion softening point |
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