基于CT试验的混凝土破损机理生态学研究  

Damage and fracture mechanism of concrete by ecological method based on CT test

作　　者：尹小涛[1] 葛修润[1] 党发宁[2] 丁卫华[2] 陈厚群[2] 

机构地区：[1]中国科学院武汉岩土力学研究所,湖北武汉430071 [2]西安理工大学岩土工程研究所,陕西西安710048

出　　处：《混凝土》2006年第8期21-24,共4页Concrete

摘　　要：本文引入数学生态学种群的概念,在整个CT标尺范围内,以100等间距考察了混凝土圆柱试件第一扫描断面σ=9.87M Pa时的CT图像,获取和分析了40个种群的个体数量和空间位置信息。在此基础上,确定了骨料种群、砂浆种群和孔隙或裂纹种群分区界限值,最终实现了混凝土骨料、砂浆和裂纹3个种群的提取,并对上述各种群的空间演化信息和CT数演化信息进行了分析,总结了混凝土的破损机理。The concept of population used in the mathematics ecology is introduced into this paper. The CT image which is stem from the first scanning section of the cylinder sample of concrete when σ =9.87MPa is studied at intervals of 100 in the whole scope of the CT staff gauge. Furthermore, quantity of pixel and spatial location about these 40 populations are acquired and analyzed. On the basis of these information, the limit threshold of subarea about three populations of aggregate, mortar and pore （or crack） are determined. Finally, these three populationg are obtained. Simultaneously, the evolutional information of spatial location and CT number on these three populations are analyzed and the damage and fracture mechanism of concrete is summarized.

关 键 词：种群 混凝土 CT数 破损机理 

分 类 号：TU528.01[建筑科学—建筑技术科学]