flexural strength evaluation of reinforced concrete members with ultra high performance concrete
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ID: 223158
2016
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Abstract
Flexural strength evaluation models for steel fiber reinforced ultra high strength concrete were suggested and evaluated with test results. Suggested flexural strength models were composed of compression stress blocks and tension stress blocks. Rectangular stress block, triangular stress block, and real distribution shape of stress were used on compression side. Under tension, rectangular stress block distributed to whole area of tension side and partial area of tension side was used. The last model for tension side is realistic stress distribution. All these models were verified with test result which was carried out in this study. Test was conducted by four-point loading with 2,000 kN actuator for slender beam specimen. Additional verifications were carried out with previous researches on flexural strength of steel fiber reinforced concrete or ultra high strength concrete. Total of 21 test specimens were evaluated. As a result of comparison for flexural strength of section, neutral axis depth at ultimate state, models with triangular compression stress block, and strain-softening type tension stress block can be used as exact solution for ultra high performance concrete. For the conservative and convenient design of section, modified rectangular stress block model can be used with strain softening type tension stress block.
| Reference Key |
bae2016advancesflexural
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|---|---|
| Authors | ;Baek-Il Bae;Hyun-Ki Choi;Chang-Sik Choi |
| Journal | bulletin of the korean chemical society |
| Year | 2016 |
| DOI |
10.1155/2016/2815247
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