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基于重复蠕变试验的阻燃沥青胶浆高温性能

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Keywords: 道路工程,阻燃沥青胶浆,重复蠕变试验,蠕变劲度的黏性成分,累积应变,蠕变柔量

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Abstract:

采用重复蠕变试验,利用Burgers模型对各沥青胶浆的蠕变过程进行模拟,从胶浆的蠕变劲度黏性成分Gv、累积应变γacc和蠕变柔量等方面分析了不同阻燃沥青胶浆的高温性能表现.结果表明纤维和复合阻燃剂的加入均会增大阻燃沥青胶浆的Gv并降低γacc,3种复配比例的阻燃沥青胶浆中M-FR1和M-FR2的Gv值相等且最大;而M-FR1沥青胶浆的γacc最小;其次是M-FR2.这两种阻燃沥青胶浆高温性能均要优于常规掺量下的木质素纤维沥青胶浆.蠕变柔量分析结果表明,M-FR2阻燃沥青胶浆的瞬时弹性变形柔量JE和延迟弹性变形柔量JC占总柔量的百分比之和最大,高温抗变形能力最强.综合各阻燃沥青胶浆的蠕变力学特性,推荐复合阻燃材料的最优复配比例为15%矿物纤维+6%复合阻燃剂(即M-FR2).

References

[1]  AMUNDSEN F H,RANES G. Studies on Traffic Accidents in Norwegian Road Tunnels[J]. Tunnelling and Underground Space Technology,2000,15(1):3-11.
[2]  SCHARTEL B,BAHR H,BRAUN U,et al. Fire Risks of Burning Asphalt[J]. Fire and Materials,2010,34(7):333-340.
[3]  XU Tao,HUANG Xiao-ming. A TG-FTIR Investigation into Smoke Suppression Mechanism of Magnesium Hydroxide in Asphalt Combustion Process[J]. Journal of Analytical and Applied Pyrolysis,2010,87(2):217-223.
[4]  QIN Xian-tao, ZHU Si-yue,CHEN Shuan-fa,et al. The Mechanism of Flame and Smoke Retardancy of Asphalt Mortar Containing Composite Flame Retardant Material[J]. Construction and Building Materials,2013,41:852-856.
[5]  BONATI A,MERUSI F,POLACCO G,et al. Ignitability and Thermal Stability of Asphalt Binders and Mastics for Flexible Pavements in Highway Tunnels[J]. Construction and Building Materials,2012,37:660-668.
[6]  BARRAL M,GARMENDIA P,MU?OZ M E,et al. Novel Bituminous Mastics for Pavements with Improved Fire Performance[J]. Construction and Building Materials,2012,30:650-656.
[7]  IWATA Y,KOSEKI H. Combustion Characteristics of Asphalt and Sodium Compunds[J]. Journal of Loss Prevention in the Process Industries,2001,14(6):539-545.
[8]  徐婷.隧道阻燃抑烟沥青及其混合料技术性能与机理研究[D].西安:长安大学,2009. XU Ting. Study on Performance and Mechanism of Tunnel Flame Retardant Asphalt and Asphalt Mixture[D]. Xi'an:Chang'an University,2009.
[9]  严伟.阻燃改性沥青混合料的性能与应用研究[D].长沙:长沙理工大学,2009. YAN Wei. Research on Performance and Application of Flame-retardant Modified Asphalt Mixture[D]. Changsha:Changsha University of Science & Technology,2009.
[10]  陈辉强,郝培文.公路隧道沥青阻燃技术研究现状及应用前景[J].公路交通技术,2009(4):115-119. CHEN Hui-qiang,HAO Pei-wen. Status of Research and Prospect of Application of Asphalt Flame Retardant Technique in Highway Tunnel[J]. Technology of Highway and Transport,2009 (4):115-119.
[11]  XU Tao,HUANG Xiao-ming,ZHAO Yong-li. Investigation into the Properties of Asphalt Mixtures Containing Magnesium Hydroxide Flame Retardant[J]. Fire Safety Journal,2011,46(6):330-334.
[12]  秦先涛. 矿物纤维阻燃沥青混合料材料组成及路用性能研究[D].西安:长安大学,2012. QIN Xian-tao. Study on Material Composition and Road Performance of Flame Retarded Asphalt Mixture with Mineral Fiber[D]. Xi'an:Chang'an University,2012.
[13]  QIN Xian-tao,ZHU Si-yue,CHEN Shuan-fa,et al. Flame Retardancy of Asphalt Mixtures and Mortars Containing Composite Flame-retardant Materials[J]. Road Materials and Pavement Design,2014,15(1):66-77.
[14]  秦先涛,陈拴发,祝斯月,等. 沥青路面矿物纤维复合阻燃材料及其热重行为研究[J].公路交通科技,2013,30(12):7-14. QIN Xian-tao,CHEN Shuan-fa,ZHU Si-yue,et al. Composite Flame Retardant Materials with Mineral Fiber for Asphalt Pavement and Their Thermogravimetric Behaviors[J]. Journal of Highway and Transportation Research and Development,2013,30(12):7-14.
[15]  吴少鹏,叶群山,刘至飞.矿物纤维改善沥青混合料高温稳定性研究[J].公路交通科技,2008,25(11):20-23. WU Shao-peng,YE Qun-shan,LIU Zhi-fei. Investigation of High Temperature Stability of Asphalt Mixture Containing Mineral Fiber[J]. Journal of Highway and Transportation Research and Development,2008,25(11):20-23.
[16]  马莉莉.矿物复合纤维沥青混合料路用性能研究[D].西安:长安大学,2011. MA Li-li. Study on Road Performance of Asphalt Mixtures with Mineral Composite Fiber[D]. Xi'an:Chang'an University,2011.
[17]  沈金安.沥青及沥青混合料路用性能[M].北京:人民交通出版社,2001. SHEN Jin-an. Road Performance of Asphalt and Asphalt Mixture[M]. Beijing:China Communications Press, 2001.
[18]  张肖宁,孟勇军,邹桂莲.基于重复蠕变的改性沥青高温指标[J].华南理工大学学报:自然科学版,2008,36(2):23-27. ZHANG Xiao-ning,MENG Yong-jun,ZOU Gui-lian. High-Temperature Index of Modified Asphalt Based on Repeated Creep [J]. Journal of South China University of Technology:Natural Science Edition,2008,36(2):23-27.
[19]  SHENOY A. Refinement of the Superpave Specification Parameter for Performance Grading of Asphalt[J]. Journal of Transportation Engineering,2001,127(5):357-362.
[20]  张肖宁.沥青与沥青混合料的粘弹力学原理及应用[M].北京:人民交通出版社,2006. ZHANG Xiao-ning. Viscoelastic Mechanics Theory and Application of Asphalt and Asphalt Mixture[M]. Beijing:China Communications Press,2006.

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