Quantitative Partition Study of the Process of Concrete CT Test under the Uniaxial Dynamic Compression#br#

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Journal of Vibration and Shock ›› 2016, Vol. 35 ›› Issue (9) : 13-19.

FANG Jianyin1，DANG Faning1，DING Weihua1， LI Xiaorong2，WANG Ping3

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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.

Key words

Hydraulic material / Quantitative subarea / Concrete CT test under dynamic load / Joint;Porosity

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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#[J]. Journal of Vibration and Shock, 2016, 35(9): 13-19

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