广东工业大学学报2024，Vol.41Issue(2)：44-49,6.DOI:10.12052/gdutxb.230008
高模量改性沥青的零剪切黏度研究
Zero Shear Viscosity Analysis of High Modulus Modified Asphalt
摘要
Abstract
Zero-shear viscosity(ZSV)is an evaluation index for viscosity of asphalt to permanent deformation at high temperature.To investigate the applicability and influence of different test methods and calculation models on ZSV fitting for high modulus modified asphalt,and to promote the application of high modulus modifiers in road engineering,dynamic shear rheometer was used to perform 60℃frequency sweep test and 60℃steady flow test on base asphalt(BA)and high modulus modified asphalt(K1-HMB)with different modifier content.ZSV of test materials was fitted by Cross rheological model and Carreau rheological model.Finally,grey correlation analysis was used to further explore the degree of correlation between ZSV and softening point.The results show that BA and K1-HMB are pseudo-plastic fluids and both exhibited shear thinning characteristics under loading frequency.K1-HMB with 0.6%content had the highest elastic recovery capacity,and the recommended content of K1-HM modifiers was 0.4%～0.6%.The ZSV fitting value based on the 60℃frequency sweep test combined with Cross model had the highest reliability and could be used as an evaluation index of the high temperature performance of high modulus modified asphalt.关键词
道路工程/高模量改性沥青/高温性能/零剪切黏度Key words
road engineering/high modulus modified asphalt/high temperature performance/zero shear viscosity分类
交通工程引用本文复制引用
尹应梅,区芷欣,汤良麒,孙晓龙,吕建兵..高模量改性沥青的零剪切黏度研究[J].广东工业大学学报,2024,41(2):44-49,6.基金项目
国家自然科学基金资助项目(51508109) （51508109）
广东省自然科学基金资助项目(2019A1515011397) （2019A1515011397）
