粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2013NO.1 专题研究 基于数字图像法的新老混凝土粘结面粗糙度表征 Characterization of Roughness of Fresh -old Concrete Bonding Interface Based on Method of Digital Image 张雄12，张蕾12 (1.同济大学材料科学与工程学院，上海201804；2.同济大学建材研究所先进土木 工程材料教育部重点实验室，上海201804) 摘要：提出了一种制作新老混凝土粘结界面人造祖糙度的方法，并基于分形理论对用数字图像法获得的粗糙界面 形貌进行处理，以分形维数表征界面的粗糙度；再利用自编的Matlab程序实现界面的三维重组，验证了数字图像法的准 确性；最后，研究了界面粗糙度与新老混凝土粘结性能的相关性.结果表明：新老混凝土粘结性能与界面分形维数呈正 相关，存在近似关系R=aDb. 关键词：新老混凝土；粗糙度；分形理论；三维重组；粘结性能 中图分类号：TU528.59 文献标识码：A文章编号：1005-8249(2013)01-0009-05 ZHANG Xiong.2 ZHANG Leil.2 (1.School fo Materials Science and Engineering Tongji University Shanghai 201804 China;2.Ministry of Education Key Laboratory of Advanced Civil Engineering Materials Building Materials Institute Tongji University Shanghai 201804 China) Abstract:An approach to getting artificial roughness of fresh-old concrete bonding interface is proposed and based on fractal theory the mophology data of which collected by digital image method is processed then the artificial roughness is characterized in fractal dimension;After that the three-dimensional reorganization of the interface is achieved by Matlab program verifing the accuracy of the digital image method;Final- ly the correlation of the roughness and the the bonding propertlys of fresh old concrete are investigated.The results show that there is a positive correlation of fractal dimension aund interfacial bonding properties which can be formulated as R=aDb. Key words:fresh-old concrete roughness fra...
基于数字图像法的新老混凝土粘结面粗糙度表征.pdf
