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Title |
Quality Evaluation and Mix Proportion of Antiwashout Underwater Concrete with Mineral Admixture
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Authors |
박용규(Park Yong Kyu) ; 김현우(Kim Hyun Woo) ; 윤기원(Yoon Ki Woon) |
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DOI |
https://doi.org/10.4334/JKCI.2014.26.6.679 |
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Keywords |
광물질 혼화재료 ; 수중불분리성 콘크리트 ; 수중불분리성 혼화제 ; 품질평가 ; mineral admixture ; antiwashout underwater concrete ; anti-washout admixture ; quality evaluation |
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Abstract |
In this research, the mix proportion of the antiwashout underwater concrete with the mineral admixture was evaluated. It can reduce the amount used of the antiwashout admixture (hereinafter referred to as "AWA") and satisfy the properties of concrete. In addition, the review for the difference of the test and practical affairs were conducted. Optimized unit quantity of water of antiwashout underwater concrete and the amount used of AWA was revealed by 190 kg/m3, 0.9%/W, respectively. In particularly, the mix design is reduced by 5% than the W/B of target strength even though the W and AWA reduced. Therefore, it will have the economical feasibility and qualities including the material separation, resistance characteristic and compressive strength, and etc. The stable value was shown in 1 point of minute passed in the measurement of the turbidity amounts using the turbidimeter after the checker insertion. However, it needs to be reviewed for the interrelationship between turbidity measuring machine and KCI-AD102 standard method. There were no significant differences of compressive strength of specimens in the water depending on the production methods.
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