湿热气候下高黏改性剂对沥青使用性能的影响研究

Study on the Effect of High-viscosity Modifier on Asphalt Performance under Hot and Humid Climate

文章为了研究湿热气候条件下高黏改性剂对沥青使用性能的影响,采用常规性能试验和流变性能试验对掺量分别为0%、6%、8%、10%及12%的高黏改性沥青进行了针入度试验、软化点试验、延度试验、动力黏度试验及动态剪切流变仪试验,以针入度、针入度指数、当量软化点、当量脆点及复数模量等作为技术指标对不同掺量下高黏改性沥青的使用性能进行了研究。试验结果表明:高黏改性剂可以改善基质沥青的高温性能、低温性能、感温性能、可使用温度范围及黏结性能,适用于湿热气候条件下的工程应用。

In order to study the effect of high-viscosity modifier on asphalt performance under hot and humid climate conditions,this article uses the conventional performance test and rheological property test to conduct the penetration test,softening point test,ductility test,dynamic viscosity test and dynamic shear rheometer test on high-viscosity modified asphalt with 0%,6%,8%,10% and12% content respectively,then,with penetration,penetration index,equivalent softening point,equivalent brittle point and complex modulus as technical indicators,it studies the performance of high-viscosity modified asphalt under different contents.The test results show that the high-viscosity modifier can improve the high-temperature performance,low-temperature performance,temperature sensing performance,usable temperature range and bonding performance of matrix asphalt,thus it is suitable for engineering applications under hot and humid climate conditions.