Naoya MURAKAMI
Experimental Study on Modified Compression Field Theory for Plane Concrete
Takumi SHIMOMURA
In the non-linear structure analysis of the RC member, the compressive constitutive model of the RC element which includes the crack has significant influence on the accuracy of the estimation. So far, the research on the compression softening arisen from longitudinal crack has been conducted with great interest. In this research, the influences of the longitudinal crack on the compressive properties are experimentally examined with the plane concrete element and the slightly reinforced concrete element. Moreover, high-strength concrete element, which is assumed to be sensitive to the crack, is also investigated.
It is clarified that the influence of the asperity on the end faces cannot be neglected when cylinder hollow specimens are uniaxially loaded in compression, This influence can be reduced by reinforcing the both sides of specimen, and by making flat end faces with hard gypsum.
As a result of compressive test with cylinder hollow, it is cleared that the influence of longitudinal crack on the compressive strength of the plane concrete element and the slightly reinforced concrete element is smaller than normally reinforced concrete element. This trend is observed regardless of the concrete strength level. It is future tasks to verify these findings with the analysis of RC members.
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