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An Experimental Study on the Flexural Ductility of Doubly Reinforced Concrete Beams with Different Concrete Strength
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 Title & Authors
An Experimental Study on the Flexural Ductility of Doubly Reinforced Concrete Beams with Different Concrete Strength
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 Abstract
This paper presents a study on the flexural ductility of reinforced concrete beams, 16beams with different concrete strength, reinforcement ratio, reinfo- rcement strength. For the purpose of inducing flexural failure, the reinforce ratio (-') was made not to be more than b in accordance with ACi code 318-89. From the test results, it is found that in case of a concrete strength increased from 240 to 650kg/, the displacement and curvature ductility factore are increased by about 31-231 percents. And also increased in case of increased from 650 to 900kg/, but the increasing ratio is gradually decreasing accoding to a concrete strength increases. And also found that as the Double Re-bar Ratio ((-')/b) increases, so the displacement and curvature ductility ratio would decrease, but in case of increased from 650 to / the decreasing ration is bigger than in case of increased from 240 to .
 Keywords
normal;high and ultra-high strength concrete;maximum strength;ultimate strain;displacement and curvature ductility factor;
 Language
Korean
 Cited by
 References
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2.
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3.
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ACI Structural Journal, 1991. vol.5;6.