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한국건축시공학회 / v.9, no.1, 2009년, pp.49-55 
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고성능 콘크리트의 표면기포 저감에 관한 연구
( A Study on the Surface Air-Void Reduction of High Performance Concrete ) |
| 박상준; (주)대우건설 기술연구원 건축연구팀;
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| 초 록 |
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| In this study, reduction methods of surface air void were examined for high performance concrete having high viscosity. The effects of assumed influencing factors such as form types, form-coating materials, tamping equipments and methods were examined based on the tests on mock-up specimens made of high performance concrete. The test results can be summarized as follows: As for form types, the most favorable results were obtained when coated plywood form was used with panel-shape tamping equipments at the contact region with concrete, the second and the third being the water/air-permeable sheets and steel with coated plywood, respectively. As for tamping equipments, a vibrator with 6.5cm diameter was most effective. Finally, the shorter the tamping intervals, the better the reduction effect of surface air void. As a conclusion, an improved method was proposed to reduce surface air void and it was verified with the test result that only four air voids as large as $5{sim}10mm$ are found in the are of $1m^2$. |
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| 키워드 |
| 고성능 콘크리트;갇힌공기;거푸집 재료;다짐장비;다짐방법;High Performance Concrete;Entrapped Air;Form Material;Tamping Equipment;Tamping Method; |
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한국건축시공학회지 / v.9, no.1, 2009년, pp.49-55
한국건축시공학회
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200909651054782)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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