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多聚磷酸改性沥青的性能研究

Keywords: 道路工程,改性沥青,室内试验,路用性能,多聚磷酸

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Abstract:

对多聚磷酸改性沥青性能进行了研究。首先进行了多聚磷酸改性沥青胶结料的性能试验,包括针入度试验、软化点试验、直接拉伸试验和动态剪切流变试验。结果表明,采用多聚磷酸改性后,沥青胶结料的高温性能和低温性能得到了提高。然后进行了多聚磷酸改性沥青混合料的路用性能试验,包括车辙试验、弯曲破坏试验和水稳定性试验,结果表明混合料的高温和低温性能得到了提高,但是水稳定性不够,添加抗剥落剂后,混合料的水稳定性达到了规范要求。通过对多聚磷酸改性沥青的经济分析表明,采用多聚磷酸改性沥青是非常经济的。

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