JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Fundamental Study on the Antiwashout Underwater Concrete for the Underwater Work of Ocean
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Fundamental Study on the Antiwashout Underwater Concrete for the Underwater Work of Ocean
;;;;
  PDF(new window)
 Abstract
When concrete is placed underwater, it is diluted with separating cementitious material and as a result the quality of concrete becomes poor. To solve this problem, antiwashout underwater concrete is increasingly used for the construction and repair of the concrete structure underwater. The objective of this study is to investigate the characteristics of antiwashout underwater concrete as to the mix proportion, casting and curing water through experimental researches. The unit weight of water and cement, water-cement ratio, fine aggregate ratio, unit weight of antiwashout underwater agent and superplasticizer, and casting and curing water were chosen to measure the suspended solids, pH, air contents, slump flow, unit weight of hardened concrete, and compressive strength. From this study, the incremental modulus at mix proportion design and unit weight of antiwashout underwater agent were increased more than fresh water, and it is a optimum mix proportion that the unit weight of water(and cement) is 230kg/(460kg/), waterOcement ratio is 50%, fine aggregate ratio is 40%, unit weight of antiwashout underwater agent is 1.2% of water contents per unit weight of concrete, and unit weight of supeplasticizer is 2.5% of cement contents per unit weight of concrete when the antiwashout underwater concrete is used for the underwater work of ocean.
 Keywords
antiwashout underwater concrete;mix proportion;casting;curing;
 Language
English
 Cited by
 References
1.
배합조건과 양생수에 따른 수중불분리성 콘크리트의 특성에 관한 연구, 2000.

2.
水中不分離性 コソクリ一ト設計施工指針(案), 1992. 541, pp.49-52

3.
한국콘크리트학회논문집, 1999. vol.11. 4, pp.21-29

4.
ACI Materials Journal, 1995. vol.92. 3, pp.315-320

5.
해양구조물공학, 1995.

6.
포틀랜드시멘트 및 콘크리트, 1994. pp.197-199;246-259

7.
대한토목학회지, 1997. vol.45. 3, pp.71-77

8.
콘크리트 변형과 파괴, 1995. pp.78-80