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An Experimental Study on the Fundamental Characteristics of Antiwashout Underwater Concrete with Variation of Water-cement Ratio
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 Title & Authors
An Experimental Study on the Fundamental Characteristics of Antiwashout Underwater Concrete with Variation of Water-cement Ratio
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 Abstract
In this study, an experiment was performed to analyze the influence of water-cement ratio on the fundamental characteristics of antiwashout underwater concrete using blended sand (sea sand:river sand = 1:1). The water-cement ratio (45%, 50%, 55%, 60%), andtiwashout underwater agent contents (0.82%, 1.00%, 1.14% of water contents per unit volume of concrete), and superplasticizer contents (1.5%, 2.0%, 2.5% of cement contents per unit volume of concrete) were chosen as the experimental parameters. The experimental results show that the underwater segregation resistance, unit weight of hardening concrete and compressive strength were increased as the water-cement ratio decreased and as the antiwashout underwater agent contents increased. On the other hand, the flowability(slump flow) was increased to the 55% of the increase of water-cement ratio, however, it was decreased at the ratio of 60%. From this study, the antiwashout underwater concrete can potentially be used as a materials underwater work of ocean if the water-cement ratio and chemical admixture contents for the suitable balance between cost and performance are properly selected.
 Keywords
Antiwashout underwater concrete;blended sand;underwater segregation;resistance;unit weight;flowability;water-cement ratio;underwater work of ocean;
 Language
Korean
 Cited by
1.
수중불분리성 콘크리트의 해양공사 적용에 관한 기초적 연구,김명식;윤재범;박세인;

한국콘크리트학회논문집, 2000. vol.12. 5, pp.25-34 crossref(new window)
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