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한국건축시공학회 / v.8, no.1, 2008년, pp.91-96 
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AE 감수제 과다첨가가 콘크리트의 물리적 특성에 미치는 영향
( Influence of Over-Added AE Water Reducing Agent on Physical Properties of the Concrete ) |
| 한천구;한민철;이동규; 청주대학교 건축공학과;청주대학교 건축공학과;청주대학교 건축공학과;
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| 초 록 |
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| This study is to investigate the influence of the over-added chemical agents, such as water reducing agent(WRA) and AE water reducing agent(AEWRA), on the physical properties of concrete to estimate the degree of damage due to over-added chemical agents. For the fresh concrete, slump and slump flow increased with the increase of WRA and AEWRA as expected. Material segregation phenomenon was observed with the over dosage of lignin based AEWRA about 4 times larger than recommended dosage. The over dosage of AE water reducing agent about 4 times larger than recommended dosage resulted in an increase of air contents remarkably. The set retardation occurred greatly with the increase of AEWRA and WRA. For the properties of the hardened concrete corresponding to the over dosage of AEWRA, it is found that compressive strength of over added AEWRA and WRA concrete are much smaller than those of base and recommended dosage concrete proportionally due to associated increasing air content. |
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| 키워드 |
| AE 감수제;감수제;재료분리;응결지연;AE water reducing agent;Water reducing agent;Segregation;Set retardation; |
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한국건축시공학회지 / v.8, no.1, 2008년, pp.91-96
한국건축시공학회
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200814364024485)
언어 : 한국어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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