콘크리트의 휨압축강도에 미치는 부재길이의 영향Effects of Specimen Length on Flexural Compressive Strength of Concrete

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In evaluating the ultimate strength of a section for a concrete flexural member, the effect of member length is not usually considered, even though the strength tends to decrease with increase of member length. In this paper the influence of specimen length on flexural compressive strength of concrete was evaluated. For this purpose, a series of C-shaped specimens subjected to axial compression and bending moment were tested using four different length-to-depth ratios(from 1, 2, 3 and 4) of specimens with compressive strength of 58 MPa. Results indicate that the reduction in flexural compressive strength with increase of length-to-width ratios was apparent. A model equation was derived using regression analyses on the experimental data. It was also founded that the effect of specimen length on ultimate strain was negligible, but its effect of the ultimate load and the displacement at center of specimen was distinct. Finally more general model equation is also suggested.
Publisher
한국콘크리트학회
Issue Date
1999-04
Language
KOR
Citation

1999 한국콘크리트학회 봄 학술대회, pp.579 - 584

URI
http://hdl.handle.net/10203/138047
Appears in Collection
CE-Conference Papers(학술회의논문)
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