Earticle

초록

영어

This is an experimental study on the structural behavior of reinforced concrete beams using of the oyster shells as a
substitute fine aggregate of concrete. In this study, the main factors consist of the grain sizes, the percentage of substitution of
oyster shells to fine aggregate and the water cement ratio in the same size beams. The results of the study showed as followed.
The initial load value of them represented similar constant within 10% of the maximum load value in each test beam. But the
maximum load value and the ultimate load value decreased with increased grain size and the rate of substitution. As the grain
size of oyster shells became smaller, the load values of them were somewhat higher. The deflection of reinforced concrete beams
with oyster shells represented typical curve like that of normal reinforced concrete beam. In the deformation of the steel and
concrete, the deformation was proportionated to the load until the yield point and after the yield point it was approached the
ultimate load point.: One type was typical curve of the load and the deformation and the other type irregularly was changed to
very small deformation with the load increase centering around load axis. It also has proved the good coincidence between the
results of the experiment and them of the theory.
After analyzing the structural behavior about the above mentioned test beams, the most excellent grain size of oyster shells
represented 5.0mm and less with taking the uniform quantity, and the percentage of practicable substitution of them to fine
aggregate was about 30% in other to make superior reinforced concrete beams containing oyster shells.

목차

Abstrac
 1. 서론
 2. 실험
  2.1 시험체 설계
  2.2 재료의 성질
  2.3 배합설계
  2.4 실험방법
 3. 실험결과 및 고찰
  3.1 시험체의 공시체 압축강도
  3.2 시험체의 하중크기
  3.3 이론치 및 실험치의 비교
  3.4 균열 및 파괴상황
  3.5 변형특성
 4. 결론
 참고문헌

저자

• 이상철 [ Lee, Sang-cheol | 경남대학교 대학원 박사과정 ]
• 우송규 [ Woo, Song-gu | 경남대학교 대학원 박사수료 ]
• 이재광 [ Lee, Jae-kwang | 경산구조안전기술연구소장, 공학박사 ]
• 구해식 [ Koo, Hae-shik | 경남대 건축학부 교수, 공학박사 ]

참고문헌