[1]何锐,黄鑫,耿九光,等.废胎胶粉与HDPE/SBS三掺复合改性沥青性能研究[J].郑州大学学报(工学版),2018,39(02):67-72.
 Properties of Composite Modified Asphalt with HDPE/SBS/Waste Tire Powder Mixed[J].Journal of Zhengzhou University (Engineering Science),2018,39(02):67-72.
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废胎胶粉与HDPE/SBS三掺复合改性沥青性能研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
39
期数:
2018年02期
页码:
67-72
栏目:
出版日期:
2018-03-30

文章信息/Info

Title:
Properties of Composite Modified Asphalt with HDPE/SBS/Waste Tire Powder Mixed
作者:
何锐黄鑫耿九光陈华鑫
文献标志码:
A
摘要:
为了改善普通胶粉改性沥青的性能缺陷,本研究采用SK-90#基质沥青和HDPE-SBS-废胎胶粉材料制备复合改性沥青,选择SBS百分掺量、胶粉掺量、HDPE掺量、剪切速度、剪切时间和剪切温度6个试验变量,通过正交试验来探讨复合改性沥青的最佳改性参数,并采用方差分析法对其针入度、软化点、5℃延度、粘度和弹性恢复率5种技术指标测试结果进行分析,得出各变量对复合改性沥青性能的影响规律,得到较优制备方案,并对其性能进行了分析。结果表明:SBS掺量对软化点和弹性恢复率影响最大;HDPE掺量对针入度影响较大;SBS和HDPE掺量对延度都具有影响;各改性剂掺量和剪切温度对旋转粘度的影响基本相同。较优制备方案为:改性剂HDPE百分掺量为1.5%,SBS百分掺量为5%,废胎胶粉百分掺量为20%,剪切温度为165℃,剪切速率为4500r/min,剪切时间为45min。较优制备方案下,改性沥青的高温稳定性和低温抗裂性大大提高,同时自身粘度增大使其与集料的粘附性增强,提高了抗车辙能力和抗水损害能力;较高的弹性恢复率保证了改性沥青的抗裂性能。
Abstract:
To study the optimum preparation process of HDPE/SBS/waste tire powder mixed with three kinds of modified asphalt, SK-90 # asphalt was used to select SBS content, powder content, HDPE content and Shear rate, shear time and shear temperature to prepare compound modified asphalt. The results were analyzed by variance analysis method. The influence of each test variable on the performance of composite modified asphalt was obtained, and the optimal preparation scheme was obtained. The results showed that the SBS content had the greatest effect on the softening point and the elastic recovery rate. The content of HDPE had a great effect on the penetration. The SBS and HDPE content had an influence on the ductility. The content of the modifier and the shear temperature the effect of rotational viscosity was essentially the same. The optimum preparation scheme was as follows: the content of HDPE was 1.5%, the content of SBS was 5%, the content of waste tire was 20%, the shear temperature was 165 ℃, the shear rate was 4500r / min, the shear time was 45min. Under the optimal preparation scheme, the high temperature stability and low temperature crack resistance of the modified asphalt were greatly improved, and the viscosity of the modified asphalt was increased and the adhesion to the aggregate was enhanced, which improved the anti-rutting ability and the ability of resisting the water resistance. The elastic recovery rate could ensure the crack resistance of modified asphalt.
更新日期/Last Update: 2018-04-02