市政技术2024，Vol.42Issue(5)：25-30,75,7.DOI:10.19922/j.1009-7767.2024.05.025
高黏高弹改性沥青混合料路用性能与工程应用研究
Research on Road Performance and Engineering Application of High-viscosity and High-elasticity Modified Asphalt Mixture
摘要
Abstract
In view of the technical problems such as the insufficient durability of the open-graded ultra-thin asphalt mixture and insufficient anti-skid performance of the dense-graded asphalt,the composition and road performance of the high-viscosity and high-elasticity CDP-10 asphalt mixture were studied by semi open-graded CDP-10 as-phalt mixture;The modification mechanism was explored by fluorescence microscopy and Fourier transform infrared spectroscopy;The optimal oil-stone ratio of the CDP-10 asphalt mixture was determined by Marshall test;The high-temperature stability of the mixture was evaluated by the rutting test;The water stability of the mixture was eval-uated by the results of the immersion Marshall stability test and freeze-thaw splitting test;The water permeability of the mixture was evaluated by the water permeability coefficient test results.The construction technology of CDP-10 asphalt mixture engineering was determined,and the quality inspection was carried out after the paving.The results show that the micro-network structure of high-viscosity and high-elasticity modified asphalt is dense and uniform;The peak areas of the finished asphalt and the upper and lower parts and segregation at 966 cm-1 and 1 377 cm-1 were quantitatively analyzed by OMNIC software.It was found that there was no significant change,and the thermal stor-age stability of the modified asphalt was better;The gradation used in the CDP-10 asphalt mixture is between open gradation and dense gradation,and the optimal oil-stone ratio is 5.1％which has good high-temperature stability,water stability and water permeability;In the application of engineering,the construction temperature control range of CDP-10 high-viscosity and high-elasticity asphalt mixture is proposed.The quality of the test section is good af-ter the construction with excellent drainage performance and anti-skid performance.CDP-10 high-viscosity and high-elasticity asphalt mixture has wide application prospects.关键词
高黏高弹改性沥青/超薄罩面/机理研究/混合料路用性能Key words
high-viscosity and high-elasticity modified asphalt/ultra-thin overlay/mechanistic study/road per-formance of the mixture分类
交通运输引用本文复制引用
林志杰,向彬..高黏高弹改性沥青混合料路用性能与工程应用研究[J].市政技术,2024,42(5):25-30,75,7.基金项目
湖北省交通运输厅科技项目(2023-121-1-08) （2023-121-1-08）
武汉工程大学第十五届研究生教育创新基金项目(CX2023361) （CX2023361）
