郑州大学学报（工学版）2012，Vol.33Issue(6)：54-58,5.DOI:10.3969/j.issn.1671-6833.2012.06.013
沥青路面加热型密封胶的低温黏弹性模型
Low-temperature Viscoelastic Model for Hot-Poured Sealant of Asphalt Pavement
摘要
Abstract
In order to describe the constitutive stress-strain relationship of hot-poured bituminous crack sealants at low service temperatures, the mechanical behavior of extension-relaxation process was analyzed by Bolt-zmann superposition principle based on standard linear model. The extension-relaxation equations of sealants were deduced. The constant strain extension and stress relaxation tests of six sealants were conducted with the bond test of ASTM D5329. Three strains were 2. 25 mm, 3. 75 mm and 6. 90 mm respectively. Standard linear solid model was used to characterize the test results, and the fitting equations of extension and relaxation were developed. The equations displayed agreement with the test results very well both in the extension and relaxation process. It turned out that the mechanical behavior of hot-poured sealants can be accurately described by standard linear solid model, and the fitting accuracy of the model is higher when the strain is smaller.关键词
道路工程/黏弹性/标准线性固体模型/加热型密封胶/应变/应力松弛Key words
road engineering/ viscoelasticity/ standard linear solid model/ hot-poured sealant/ strain/ stress relaxation分类
交通工程引用本文复制引用
李峰,黄颂昌,石小培..沥青路面加热型密封胶的低温黏弹性模型[J].郑州大学学报（工学版）,2012,33(6):54-58,5.基金项目
国家自然科学基金资助项目(51008146) （51008146）
交通运输部西部交通建设科技项目(2011318223410) （2011318223410）
