长江科学院院报2013，Vol.30Issue(3)：75-78,84,5.DOI:10.3969/j.issn.1001-5485.2013.03.016
基于CT-连续加荷水泥乳化沥青混凝土细观损伤规律研究
Research on Meso-damage of Cement Emulsified Asphalt Concrete under Continuous Loading by CT Scanning
摘要
Abstract
Real-time scanning observation on the meso-damage in cement emulsified asphalt concrete was carried out by means of computerized tomography ( CT) . The CT images of concrete samples under continuous loading were obtained. With approaches of visual analysis, CT number analysis and analysis on the relation between CT number and damage variable, it was concluded that the damage process of the cement emulsified asphalt concrete could be divided into four stages as follows; compression, enlargement, crack expansion, and damage. Meanwhile, the concrete has toughness in the compression process. Before the ultimate load, micro-enlargement intensified into compaction for each section of the concrete; whereas after the ultimate load, damage developed to failure steadily.关键词
水泥乳化沥青混凝土/CT试验/CT图像/CT数/损伤变量Key words
cement emulsified asphalt concrete/ CT test/ CT image/ CT number/ damage variable分类
建筑与水利引用本文复制引用
闫小虎,杨华全,石妍,李明霞..基于CT-连续加荷水泥乳化沥青混凝土细观损伤规律研究[J].长江科学院院报,2013,30(3):75-78,84,5.基金项目
国家自然科学基金重点项目(50539010) （50539010）
中央级公益性科研院所基本科研业务费(KSF2011018/CL) （KSF2011018/CL）
