阻燃改性沥青疲劳与自愈合性能研究
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摘要
将氢氧化镁、红磷和十溴二苯乙烷分别均匀混入SBS改性沥青中制备阻燃沥青,利用红外光谱分析仪探究阻燃剂与沥青的化学反应情况,然后通过室内试验分析阻燃剂掺量对沥青基本性能和阻燃性能的影响,最后通过基于动态剪切流变仪(DSR)的疲劳-愈合-疲劳试验研究了阻燃剂和愈合温度对沥青疲劳与自愈合性能的影响规律。结果表明:红外光谱分析结果表明阻燃剂与沥青之间没有发生明显的化学反应;阻燃剂虽然提高了沥青材料的阻燃性能,但是降低了沥青的施工和易性和存储稳定性;随阻燃剂掺量增加,沥青的疲劳与自愈合性能先升高后降低,存在最佳阻燃剂掺量;在不同愈合温度下,适量阻燃剂均能提高SBS改性沥青的疲劳与自愈合性能。
Flame retardant asphalt was prepared by mixing SBS modified asphalt with magnesium hydroxide, red phosphorus and ten bromo two phenyl ethane separately. Fourier transform infrared spectrometer(FTIR) was used to study the reaction between asphalt and flame retardant. The influence of flame retardant dosage on the basic properties and flame retardancy of asphalt was investigated through laboratory tests. The fatigue-healing-fatigue test based on dynamic shear rheometer(DSR) was conducted to study the effect of flame retardant and healing temperature on the fatigue and healing properties of asphalt binder. The results show that there is no obvious chemical reaction between flame retardant and asphalt. Although improving the flame retardancy of asphalt materials, flame retardant reduces the construction peaceability and storage stability of asphalt. Fatigue life and healing indexes of asphalt increases first and then decreases with the increase of flame retardant content, which indicates that there is an optimal amount of flame retardant. What is more, at different healing temperature, proper amount of flame retardant can improve the fatigue and self-healing properties of SBS modified asphalt.
Flame retardant asphalt was prepared by mixing SBS modified asphalt with magnesium hydroxide, red phosphorus and ten bromo two phenyl ethane separately. Fourier transform infrared spectrometer(FTIR) was used to study the reaction between asphalt and flame retardant. The influence of flame retardant dosage on the basic properties and flame retardancy of asphalt was investigated through laboratory tests. The fatigue-healing-fatigue test based on dynamic shear rheometer(DSR) was conducted to study the effect of flame retardant and healing temperature on the fatigue and healing properties of asphalt binder. The results show that there is no obvious chemical reaction between flame retardant and asphalt. Although improving the flame retardancy of asphalt materials, flame retardant reduces the construction peaceability and storage stability of asphalt. Fatigue life and healing indexes of asphalt increases first and then decreases with the increase of flame retardant content, which indicates that there is an optimal amount of flame retardant. What is more, at different healing temperature, proper amount of flame retardant can improve the fatigue and self-healing properties of SBS modified asphalt.
引文
[1] Koons R E. Fire resistant asphaltic compositions:US,US3342614[P]. 1967.
[2] Jolitz R J, Kirk D R. Flame retardant asphalt composition:CA, US5102463[P]. 1992.
[3]罗小锋,余剑英,吴少鹏,等.阻燃沥青的制备与性能研究[J].石油沥青,2005, 19(4):11-13.
[4]杨群,李望瑞.沥青阻燃性能的评价方法与性能研究[J].建筑材料学报,2008, 11(4):431-434.
[5]赵洁雯.基于沥青各组分热力学特性的复合阻燃机理研究[D].东南大学,2017.
[6] Burns F B, Larrison M S, Higgs M C. Fire resistant asphalt roofing:US, US2458143[P]. 1949.
[7] Schroeder J. Fire resistant asphalt roofing:, US3751291 A[P]. 1973.
[8]任梵,张晓娇,孙海斌,等.国内外路用阻燃沥青的研究现状与展望[J].长安大学学报(自然科学版),2012, 32(6):1-10.
[9] Bonati A, Merusi F, Bochicchio G, et al. Effect of nanoclay and conventional flame retardants on asphalt mixtures fire reaction[J]. Construction&Building Materials, 2013,47(10):990-1000.
[10]余剑英,罗小锋,吴少鹏,等.阻燃SBS改性沥青的制备及性能[J].中国公路学报,2007, 20(2):35-39.
[11] Wu S, Cong P, Yu J, et al. Experimental investigation of related properties of asphalt binders containing various flame retardants[J]. Fuel, 2006, 85(9):1298-1304.
[12]陈辉强.新型阻燃沥青的制备及其阻燃机理研究[D].长安大学,2009.
[13]梁永胜.氢氧化铝/层状硅酸盐阻燃沥青的制备及其协同阻燃机理研究[D].武汉理工大学,2013.
[14]李立寒,邹小龙,陈春羽.复配阻燃沥青氧指数和路用性能研究[J].建筑材料学报,2013, 16(1):76-80.
[15] Kim Y R, Little D, Lytton R. Evaluation of microdamage,healing, and heat dissipation of asphalt mixtures,using a dynamic mechanical analyzer[J].Transportation Research Record:Journal of the Transportation Research Board, 2001, 1767(1):60-6.
[16] Sun D, Pang Q, Zhu X, et al. Enhanced Self-healing Process of Sustainable Asphalt Materials Containing Microcapsules[J]. Acs Sustainable Chemistry&Engineering, 2017.
[17]魏继中.光谱化学分析[M].呼和浩特:内蒙古人民出版社,1978.
[18]魏建国,谢成,付其林.阻燃剂对沥青与沥青混合料性能的影响[J].中国公路学报,2013, 26(6):30-37.
[19]朱洪洲,范世平,卢章天.基于DSR Time-Sweep的沥青常应变疲劳演化规律分析[J].重庆交通大学学报(自然科学版),2018, 37(2):29-34.
[2] Jolitz R J, Kirk D R. Flame retardant asphalt composition:CA, US5102463[P]. 1992.
[3]罗小锋,余剑英,吴少鹏,等.阻燃沥青的制备与性能研究[J].石油沥青,2005, 19(4):11-13.
[4]杨群,李望瑞.沥青阻燃性能的评价方法与性能研究[J].建筑材料学报,2008, 11(4):431-434.
[5]赵洁雯.基于沥青各组分热力学特性的复合阻燃机理研究[D].东南大学,2017.
[6] Burns F B, Larrison M S, Higgs M C. Fire resistant asphalt roofing:US, US2458143[P]. 1949.
[7] Schroeder J. Fire resistant asphalt roofing:, US3751291 A[P]. 1973.
[8]任梵,张晓娇,孙海斌,等.国内外路用阻燃沥青的研究现状与展望[J].长安大学学报(自然科学版),2012, 32(6):1-10.
[9] Bonati A, Merusi F, Bochicchio G, et al. Effect of nanoclay and conventional flame retardants on asphalt mixtures fire reaction[J]. Construction&Building Materials, 2013,47(10):990-1000.
[10]余剑英,罗小锋,吴少鹏,等.阻燃SBS改性沥青的制备及性能[J].中国公路学报,2007, 20(2):35-39.
[11] Wu S, Cong P, Yu J, et al. Experimental investigation of related properties of asphalt binders containing various flame retardants[J]. Fuel, 2006, 85(9):1298-1304.
[12]陈辉强.新型阻燃沥青的制备及其阻燃机理研究[D].长安大学,2009.
[13]梁永胜.氢氧化铝/层状硅酸盐阻燃沥青的制备及其协同阻燃机理研究[D].武汉理工大学,2013.
[14]李立寒,邹小龙,陈春羽.复配阻燃沥青氧指数和路用性能研究[J].建筑材料学报,2013, 16(1):76-80.
[15] Kim Y R, Little D, Lytton R. Evaluation of microdamage,healing, and heat dissipation of asphalt mixtures,using a dynamic mechanical analyzer[J].Transportation Research Record:Journal of the Transportation Research Board, 2001, 1767(1):60-6.
[16] Sun D, Pang Q, Zhu X, et al. Enhanced Self-healing Process of Sustainable Asphalt Materials Containing Microcapsules[J]. Acs Sustainable Chemistry&Engineering, 2017.
[17]魏继中.光谱化学分析[M].呼和浩特:内蒙古人民出版社,1978.
[18]魏建国,谢成,付其林.阻燃剂对沥青与沥青混合料性能的影响[J].中国公路学报,2013, 26(6):30-37.
[19]朱洪洲,范世平,卢章天.基于DSR Time-Sweep的沥青常应变疲劳演化规律分析[J].重庆交通大学学报(自然科学版),2018, 37(2):29-34.