硅橡胶粉-SBS复配改性沥青路用性能流变学分析  

Rheological Study of Paving Performance of Silicone Rubber Powder-SBS Compound Modified Asphalt

作　　者：刘仲宁 王国忠[1] 胡江三[1] 陆佳宝 LIU Zhong-ning;WANG Guo-zhong;HU Jiang-san;LU Jia-bao(College of Energy and Transportation Engineering,Inner Mongolia Agricultural University,Hohhot 010000,China;Ulanqb Vocational College,Ulanqb 012000,China)

机构地区：[1]内蒙古农业大学能源与交通工程学院,呼和浩特010000 [2]乌兰察布职业学院,乌兰察布012000

出　　处：《科学技术与工程》2023年第10期4375-4383,共9页Science Technology and Engineering

基　　金：内蒙古自然科学基金(2019MS05033);内蒙古交通厅科技项目(NJ-2016-09)。

摘　　要：为了研究硅橡胶粉(silicone rubber powder,SRP)-苯乙烯-丁二烯-苯乙烯(styrene-butadiene-styrene,SBS)复配改性沥青的高低温性能,复配了9种不同掺配比例的改性沥青。通过常规试验和沥青流变学试验的分析方法,定性定量地分析了硅橡胶粉、SBS掺量对于复配改性沥青黏弹性的影响。分析低温弯曲蠕变试验结果时,为了全面考虑劲度模量变化率和劲度模量,分析了二者的比值和低温连续分级温度,全面准确的分析了复配改性沥青的低温性能。利用多温度下的频率扫描试验,构建复配改性沥青的复数剪切模量的主曲线,在较宽频率范围内分析了不同配合比下复配改性沥青的性能差异,为更好地研究极端频率下的情况,引入改进型CAM(Christensen-Andersen-Marastean)模型,分析了复配改性沥青的高温性能。复配改性沥青的高低温性能良好,推荐使用的复配比例为17.5%SRP+4%SBS。In order to investigate the high and low temperature performance of silicone rubber powder(SRP)-SBS compound modified asphalt,nine kinds of modified asphalt with different mixing ratios compounded were used.By the conventional test and the analysis method of the asphalt rheology test,the effects of SRP and SBS content on the viscoelasticity of the compound modified asphalt were qualitatively and quantitatively analyzed by the conventional test and the analysis method of the asphalt rheology test.When we analyzed the results of low temperature bending beam rheometer test,in order to comprehensively consider the creep rate and the flexural creep,the ratio of this two values and low grade temperature were,and the low temperature performance of compound modified asphalt comprehensively and accurately analyzed.With the frequency sweep test at multiple temperatures,the master curve of the complex shear modulus of the compound modified asphalt was constructed,and modified asphalt under different mixing ratios in a wide frequency range analyzed the performance differences of the compound.For studying the situation under extreme frequency,the improved CAM(Christensen-Andersen-Marastean)model was introduced to analyze the high temperature performance of compound modified asphalt.It shows that the compound modified asphalt has good high and low temperature performance,and the recommended compounding ratio is 17.5%SRP+4%SBS.

关 键 词：硅橡胶粉 复配改性沥青 低温连续分级温度 主曲线 CAM模型 

分 类 号：U414[交通运输工程—道路与铁道工程]