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沥青品种对浇筑式沥青混凝土疲劳性能的影响

DOI: 10.3969/j.issn.1674-0696.2013.05.11, PP. 950-952

Keywords: 浇筑式沥青混合料,沥青品种,劲度模量,疲劳性能,滞后角,gussasphaltconcrete,asphaltspecies,stiffnessmodulus,fatigueperformance,lagangle

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Abstract:

:?根据应变控制模式下的四点小梁弯曲疲劳试验方法,研究了3种不同改性沥青对浇筑式沥青混合料疲劳的影响。结果显示:不同的改性沥青对浇筑式沥青混合料的疲劳性能影响非常显著,SK70基质沥青与湖沥青复合改性的沥青和ZX-30改性沥青成型的浇筑式沥青混凝土具有优异的抗疲劳性能,不同改性沥青对浇筑式沥青混合料的粘弹性能影响较大,浇筑式沥青混合料的滞后角愈大则疲劳寿命愈好。

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