摘要
为探究天然沥青对高针入度标号石油沥青的改性作用,在试验室采用布敦岩沥青对110#石油沥青进行改性,评价了其混合料的高低温以及抗水损坏性能,结果显示:岩沥青可改善沥青混合料的高温抗车辙性能,并且随着岩沥青掺量的增加,改善幅度更明显;较高的岩沥青掺量不利于沥青混合料的低温抗裂性能。当工程中使用时,应当注意岩沥青的掺量并非越多越好,建议结合工程实际使用材料,确定最佳的岩沥青掺量;岩沥青可改善沥青混合料的抗水损坏性能,并且掺量越大,改善效果越好,但使用时必须兼顾混合料的低温抗裂性能。
In order to explore the modification effect of natural asphalts on high - penetrating grade petroleum asphalt, the asphalt of 110 # was modified with Buton rock asphalt in the laboratory, then temperature sensitivity, aging performance and water - resistant performance of the mixture were evaluated. The results show that： （ 1 ） Rock asphalt can improve the high temperature anti - rutting performance of asphalt mixture, and with the rock asphalt content increases, the improvement is more obvious. （2） The high rock asphalt content is not conducive to the low temperature crack resistance of asphalt mixture, when used in the project, should pay attention to the rock asphalt content is not the more the better, so it is recommended that the actual use of engineering materials to determine the best rock asphalt Content. （3） Rock asphalt can improve the water - resistant performance of asphalt mixture, and the greater the content, the better the improvement, but the low - temperature anti - cracking properties of the mixture must be taken into account in practical application.
出处
《内蒙古公路与运输》
2017年第2期18-21,共4页
Highways & Transportation in Inner Mongolia
关键词
岩沥青
改性
沥青混合料
性能试验
rock asphalt, modification, asphalt mixture, performance test.
