혼합순환굵은골재를 사용한 철근콘크리트보의 전단성능 = Shear Performance of Reinforced Concrete Beams Utilized Mixed Recycled Coarse Aggregates

다국어 초록 (Multilingual Abstract)

<P>This paper focuses on the possibility of the use of recycled aggregate concrete as a structural material and estimated of using a mixed recycled aggregates. Shear behavior of reinforced recycled concrete beams are investigated experimentally in order to estimate to establishing design code for shear by comparing with that of reinforced concrete beam made of nature aggregate. For that purpose an experimental study of the shear behaviour and strength of beams made with recycled aggregate concrete was studied. Six specimens with the same compression strength, four specimens mixtures using different percentages of mixed recycled coarse aggregates(0, 30, 60 and 100%) and stirrup is not reinforced. Other specimens are produced using 0 and 100% of mixed recycled coarse aggregates and stirrup is reinforced. Analytical predictions of the experimental results were carried out using a numerical model based on the KCI, JSCE, CSA, Zsutty and MCFT. Experimental result indicate that recycled concrete beams without stirrup is increased in shear strength by 20∼30% and empirical design code underestimates the shear strength of recycled aggregate concrete. Also, Recycled concrete beams with stirrup is increased in shear strength by 10%. Zsutty and MCFT(Modified Compression Field Theory) codes overestimates the ultimate shear strength of beams by 8%.</P>

참고문헌 (Reference)

1 한국콘크리트학회, "콘크리트구조설계기준" 2007

2 신성우, "재생굵은골재의 함유량에 따른 철근콘크리트보의 휨거동에 관한 연구" 22 (22): 83-86, 2002

3 김무한, "재생골재의 혼합조건에 따른 재생골재 콘크리트의 시공성 및 공학적 특성에 관한 실험적 연구" 9 (9): 109-120, 1993

4 이경희, "재생골재를 사용한 철근콘크리트보의 전단성능과 휨 성능에 관한 실험적 연구" 충남대학교 대학원 2002

5 이원석, "순환굵은골재 치환율에 따른 전단보강되지 않은 철근콘크리트 보의 전단강도특성" 대한건축학회 23 (23): 3-10, 2007

6 윤승조, "굵은골재로서 폐기콘크리트를 사용한 콘크리트에 관한 기초적 연구" 5 (5): 449-453, 1985

7 국토해양부, "건설폐기물의 재활용 촉진에 관한 법률"

8 市川信雄, "再生骨材を混合したコソくㅡリトる部材の力學的特性に關する檢討" 10 : 85-88, 1993

9 "再生骨材のコンクリ-ト用骨材としての 再利用技術の開發"

10 中川隆夫, "再生コンクリ―トの乾燥收縮ひび割れ特性" 21 (21): 1999

11 Vecchio F.J, "The Modified Compression-field theory for reinforced concrete elements subjected to shear" 83 (83): 219-231, 1986

12 Zsutty. T. C, "Shear strength prediction for separate cate gories of simple beam test" 68 (68): 138-143, 1971

13 Etxeberria M, "Recycled aggregate concrete as structural material" 40 (40): 529-541, 2007

14 Racindrajah, R.S, "Recycled Concrete as Fine and Coarse Aggregate in Concrete" 39 (39): 214-220, 1987

15 B.C.S.J, "Proposed standard for the use of recycled aggre gate and recycled aggregate concrete In Committe on Disposal and Reuse of Construction Waste"

16 Ravindrarajah R.S, "Properties of concrete made with crushed concrete as coarse aggregate" 37 (37): 29-38, 1985

17 JSCE, "Japan Concrete Specification" Japan Society of Civil Engineers in Japanese 1999

18 Canadian Standard Association, "Design of Concrete Structures A23.3-94," Canadian Standards Association"

19 Wesche, K, "Beton aus aufbereitetem altbeton Technologie and Eigenschaften"