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SBS/ 多聚磷酸复合改性沥青低温蠕变特性分析
引用本文:杨晓林.SBS/ 多聚磷酸复合改性沥青低温蠕变特性分析[J].中国建材科技,2018,27(3):29-31.
作者姓名:杨晓林
作者单位:甘肃省公路管理局
基金项目:Road engineering; SBS/polyphosphoric acid modified asphalt; low temperature performance; BBR
摘    要:为分析多聚磷酸掺量对SBS/多聚磷酸复合改性沥青低温性能的影响,采用弯曲梁流变仪对SBS/多聚磷酸复合改性沥青和SBS改性沥青的低温蠕变劲度(S)与松弛特性(m)进行了试验测试,分析多聚磷酸掺量以及测试温度对其粘弹性组成的影响,并与SBS改性沥青进行比较。结果表明:SBS/多聚磷酸复合改性沥青的S和m值在很大程度上取决于多聚磷酸的掺量,多聚磷酸掺量越大,复合改性沥青的S值越大,m值越小,SBS/多聚磷酸复合改性沥青的低温性能随多聚磷酸掺量的增加而降低。

关 键 词:道路工程  SBS/多聚磷酸复合改性沥青  低温性能  BBR

Creep characteristics of SBS/polyphosphate composite modified asphalt at low temperature
Yang Xiaolin.Creep characteristics of SBS/polyphosphate composite modified asphalt at low temperature[J].China Building Materials Science & Technology,2018,27(3):29-31.
Authors:Yang Xiaolin
Abstract:To analyze the effect of polyphosphoric acid content on the low temperature performance of SBS/polyphosphoric acid modified asphalt, applied BBR to test the low temperature creep stiffness(S) and relaxation properties (m) of SBS/ polyphosphoric acid modified asphalt and SBS modified asphalt.The effect of the amount of polyphosphoric acid on viscoelastic of SBS/polyphosphoric acid modified asphalt was analyzed and compared with SBS modified asphalt.The results shown that S and m values of SBS/polyphosphoric acid modified asphalt largely depend on the content of polyphosphoric acid.The greater the content of polyphosphoric acid, the greater the S value of the composite modified bitumen and the smaller the m value; the low temperature performance of SBS/polyphosphate modified asphalt decreases with the increase of polyphosphoric acid content.
Keywords:
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