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再生沥青混合料压实特性的研究

DOI: 10.3969/j.issn.1674-0696.2013.05.15, PP. 965-968

Keywords: 再生沥青混合料,旋转压实,压实特性,影响因素,reclaimedasphaltmixture,gyratorycompaction,compactioncharacteristics,influencefactors

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Abstract:

:?采用旋转压实仪成型试件,根据旋转压实密实度曲线计算压实特性参数,分析混合料类型、公称最大粒径和RAP掺配率对再生沥青混合料压实特性的影响。研究结果表明:SMA再生混合料的K1和CEI高于AC,SMA比起AC更难压实;SMA混合料的TDI较高而K2较低,SMA再生混合料具有更好的抗变形能力;随着公称粒径的增大,K1和CEI逐渐增大、TDI逐渐增大而K2逐渐降低,混合料越难被压实,抗变形能力逐渐提高;RAP掺配率越高,K1和CEI越大、TDI越大而K2越小,再生混合料的可压实性降低而开放交通后抵抗变形的能力增加。

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