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In-Situ Application of High-Strength Antiwashout Underwater Concrete
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 Title & Authors
In-Situ Application of High-Strength Antiwashout Underwater Concrete
Moon Han-Young; Song Yong-Kyu;
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 Abstract
Recently, the construction of underwater structures has been gradually increased, but underwater concrete got some problems of quality deterioration and water contamination around cast-in-situ of construction. In addition, massive underwater structures such as LNG tank, underwater concrete structures of large and continuous high- strength subterranean wall under water are being demanded lower heat of hydration. In this paper, the mechanical properties of high-strength antiwashout underwater concrete (HAWC) containing with two kinds of mineral admixtures respectively were investigated. On the basis of these results, the pH value and suspended solids of HAWC manufactured in the mock-up test were 10.011.0 and 51 mg/ at 30 minutes later, respectively, initial and final setting time were about 30,37 hours, and the slump flow was 53020Tm. In the placement at a speed of , there was no large difference in flowing velocity with or without reinforcing bar, and flowing slope was maintained at horizontal level. Compressive strength and elastic modulus of the cored specimen somewhat decreased as flowing distance was far; however, those of central area showed the highest value.
 Keywords
underwater structure;high-strength antiwashout underwater concrete;suspended solids;mock-up test;flowing velocity;
 Language
English
 Cited by
 References
1.
Japan Concrete Institute, 'Proceedings of JCI Symposium on Super-Flowable Concrete,' Japan Concrete Institute, 1993,pp.98-101

2.
Khayat, K. H. and Hester, H. T., 'Evaluation of concrete mixtures for underwater pile repairs,' Cement Concrete and Aggregate, Vol.13, No.1, 1991, pp.32-41 crossref(new window)

3.
Khayat, K. H., Gerwick, B. C. Jr., and Hester, W. T., 'Concrete placement with inclined tremie for small underwater repairs,' Concrete International, Vol.15, No.4, 1993, pp.49-56

4.
Khayat, K. H. and Sonebi, M., 'Effect of mixture composition on washout resistance of highly flowable underwater concrete,' ACI Materials Journal, Vol.98, No.4, 2001a, pp.289-295

5.
Khayat, K. H. and Sonebi, M., 'Effect of mixture composition on washout resistance of highly flowable concrete,' ACl Materials Journal, Vol.98, No.M31, 2001b, pp.72-78

6.
Khayat, K.H., Yahia, A., and Sonebi,, 'Applications of statistical models for proportioning underwater concrete,' ACI Materials Journal, Vol.96, No.6, 1999, pp.634-640

7.
Khayat, K. H., 'Effects of antiwashout admixtures on fresh concrete properties,' ACI Materials Journal, Vol.92, No.2, 1995, pp.164-171

8.
Korean Society of civil Engineers., 'Quality specification of antiwashout underwater admixture for concrete,' Korean Society of civil Engineers, 1995, pp. 2-9

9.
Mehta, P. K. and Monteiro, P. J. M., 'Concrete-structure, properties and materials,' Prentice Hall, Second Edition, A Simon & Schuster company, 1993, pp. 276-279

10.
Moon, H. Y., Kim, S. S., Jeon, J. K., and Song, Y. K., 'A study on high quality of antiwashout underwater concrete,' Journal of the Korea Concrete Institute, Vol.12, No. 5, 2000, pp.111-119

11.
Neeley, B. D., 'Evaluation of concrete mixtures for use in underwater repairs,' Department of the Army Waterways Experiment Station, Vickcsburg, Miss., Technical Report No. REMR-CS-18, 1988, pp.156-170