| 高黏度改性沥青黏韧性的影响因素 |
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| 引用本文： | 姚鸿儒,吴钊,常大伟,王强. 高黏度改性沥青黏韧性的影响因素[J]. 石油沥青, 2021, 0(1): 51-56,66 |
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| 作者姓名： | 姚鸿儒 吴钊 常大伟 王强 |
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| 作者单位： | 华东理工大学石油加工研究所;江苏省交通科学研究院股份有限公司、新型道路材料国家工程实验室;日沥（上海）商贸有限公司;上海城建日沥特种沥青有限公司 |
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| 基金项目： | 上海市科学技术委员会科研计划项目(19DZ1204205)。 |
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| 摘 要： | 沥青黏韧性试验是评价沥青改性效果的一种典型试验,评价高黏度改性沥青时常存在拉脱的现象,未必能够反映高黏度改性沥青的特性.研究了SBS含量、25℃针入度和基质沥青组分对高黏度改性沥青黏韧性的影响.结果表明,黏韧性随着SBS含量的增加先增大后减小;针入度小的改性沥青的黏韧性试验荷载大,最大变形小;针入度大的改性沥青荷载小,...
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| 关 键 词： | 高黏度改性沥青 黏韧性 胶体不稳定指数 荷载-变形曲线 |
Effect Factors on the Toughness and Tenacity of High Viscosity Modified Asphalt |
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| YAO Hongru,WU Zhao,CHANG Dawei,WANG Qiang. Effect Factors on the Toughness and Tenacity of High Viscosity Modified Asphalt[J]. Petroleum Asphalt, 2021, 0(1): 51-56,66 |
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| Authors: | YAO Hongru WU Zhao CHANG Dawei WANG Qiang |
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| Affiliation: | (Petroleum Processing Research Center,East China University of Science and Technology,Shanghai 200237;National Engineering Laboratory for Advanced Road Materials,Jiangsu Transportation Institute Co.,Ltd.,Nanjing 210Q0Q;NichiReki(Shanghai)Trading Co.,Ltd.,Shanghai 200436;Shanghai Urban Construction NichiRehi Special Asphalt Co.,Ltd.,Shanghai 200436) |
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| Abstract: | Toughness and tenacity test is a typical method to evaluate the effect of asphalt modification.The phenomenon of pull-off often exists in the evaluation of high viscosity modified asphalt,which may not reflect the characteristics.The effects of SBS content,25℃ penetration and matrix asphalt composition on the toughness and tenacity of high viscosity modified asphalts are studied.The results show that toughness and tenacity first increase and then decrease with the increasing of SBS content.Modified asphalts with small penetration have larger load and small maximum deformation,while asphalt with higher penetration has smaller load and larger maximum deformation.In studied samples,the high viscosity modified asphalts prepared by matrix asphalts with small colloid instable index and low asphaltene content has higher toughness and tenacity.Relationship between toughness and tenacity and the performance of asphalt mixtures need further study,as well as the application scope of specification. |
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| Keywords: | high viscosity modified asphalt toughness and tenacity colloid instable index load deformation curve |
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