Quantitative Partition Study of the Process of Concrete CT Test under the Uniaxial Dynamic Compression#br#
FANG Jianyin1，DANG Faning1，DING Weihua1， LI Xiaorong2，WANG Ping3
1.Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an 710048,China；
2. Emerson eResource (Xi’an) Co. Ltd, Shan Xi Xi’an 710048；
3. China Southwest Geotechnical Investigation & Design Institute Co.,Ltd，Si Chuan Cheng du 610084
Abstract：In order to study the process of concrete CT test under uniaxial dynamic compression quantitatively, the theory of damage evolution based on fuzzy set is introduced into the study of concrete CT test. Based on the lambda 1~2 sets, the CT images be divided into hole or crack zone (P0-λ1), hardened cement paste area (Pλ1-λ2) and aggregate area (Pλ2-1). Furthermore, the porosity, hardened cement paste rate and aggregate rate are also defined. Finally the changing law of P0-λ1、Pλ1-λ2 and Pλ2-1 during the process of concrete CT test which under uniaxial dynamic compression are studied. It can be concluded that using this method the quantitative subarea of each component of concrete can be realized. The changing law of P0-λ1、Pλ1-λ2、Pλ2-1and in concrete during the loading can be studied quantitatively. The failure process of concrete can be described also, and the strain localization of the specimen during the failure process can be reflected quantitatively.
方建银1，党发宁1，丁卫华1，李晓荣2，王平3. 混凝土单轴动力压缩CT试验过程定量化分区研究[J]. 振动与冲击, 2016, 35(9): 13-19.
FANG Jianyin1，DANG Faning1，DING Weihua1， LI Xiaorong2，WANG Ping3. Quantitative Partition Study of the Process of Concrete CT Test under the Uniaxial Dynamic Compression#br#. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(9): 13-19.
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