摘要

为了控制废旧沥青回收料(RAP)级配及沥青含量的变异性,保障泡沫温拌再生沥青混合料的性能,将RAP料"分档"处理,并研究了RAP掺量对泡沫温拌再生沥青混合料高温性能、劈裂强度及短期抗水损害能力的影响。结果表明:RAP"分档"处理有利于降低RAP级配及沥青含量的变异性;随着RAP掺量增加,泡沫温拌再生沥青混合料的高温稳定性和劈裂强度提高;当RAP掺量为30%~50%时,泡沫温拌再生沥青混合料的短期抗水损害能力高于热拌沥青混合料,随着RAP掺量的增加,泡沫温拌再生沥青混合料的冻融劈裂强度比(TSR)逐渐减小。

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