강섬유 혼입율이 강섬유보강 고강도 콘크리트의 작업성과 강도특성에 미치는 영향 (Influence of Steel Fiber Volume Ratios on Workability and Strength Characteristics of Steel Fiber Reinforced High-Strength Concrete)

서지정보

· 발행기관 : 한국건축시공학회
· 수록지 정보 : 한국건축시공학회지 / 8권 / 3호 / 75 ~ 85페이지
· 저자명 : 김윤일, 이양근, 김명성

초록

In this paper, concrete material tests were carried out to investigate influence of steel fiber volumn ratios on variations of workability and strength characteristics of steel fiber reinforced high-strength concrete, 50MPa ~ 90MPa of compressive strength, according to increase of fiber volume. Test specimens were arranged with six levels of concrete compressive strength and fiber volumn ratios, 0.0%, 0.5%, 1.0%, 1.5%, 2.0%.
The test results showed that steel fiber reinforced high-strength concrete(70MPa ~ 90MPa,1.5% fiber volumn ratio) with good workability of slump 20㎝ could be used practically and effects of steel fiber reinforcement in improvement of concrete strength and toughness characteristics such as splitting tensile strength, flexural strength, and diagonal tensioned shear strength, were more distinguished in high-strength concrete than general strength concrete.
And the test results indicated that splitting tensile strength of fiber reinforced concrete was proportioned to the product of steel fiber volumn ratios, (%) and sqare root of compressive strength, , and the increasing rate was in contrast with that of flexural strength, and increase of diagonal tensioned shear strength was remarkable at steel fiber volumn ratio, 0.5%

영어초록

In this paper, concrete material tests were carried out to investigate influence of steel fiber volumn ratios on variations of workability and strength characteristics of steel fiber reinforced high-strength concrete, 50MPa ~ 90MPa of compressive strength, according to increase of fiber volume. Test specimens were arranged with six levels of concrete compressive strength and fiber volumn ratios, 0.0%, 0.5%, 1.0%, 1.5%, 2.0%.
The test results showed that steel fiber reinforced high-strength concrete(70MPa ~ 90MPa,1.5% fiber volumn ratio) with good workability of slump 20㎝ could be used practically and effects of steel fiber reinforcement in improvement of concrete strength and toughness characteristics such as splitting tensile strength, flexural strength, and diagonal tensioned shear strength, were more distinguished in high-strength concrete than general strength concrete.
And the test results indicated that splitting tensile strength of fiber reinforced concrete was proportioned to the product of steel fiber volumn ratios, (%) and sqare root of compressive strength, , and the increasing rate was in contrast with that of flexural strength, and increase of diagonal tensioned shear strength was remarkable at steel fiber volumn ratio, 0.5%

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