DOI QR코드

DOI QR Code

A Study on high Quality of Antiwashout Underwater Concrete

수중불분리성콘크리트의 고품질화 연구

  • 문한영 (한양대학교 공과대학 토목공학과) ;
  • 김성수 (대진대학교 이공대학 토목공학과) ;
  • 전중규 (한양대학교 대학원 토목공학과) ;
  • 송용규 (한양대학교 대학원 토목공학과)
  • Published : 2000.10.01

Abstract

In case of constructing concrete structure under water, generally concrete mixed with antiwashout admixture, high range water reducer, or AE-water reducing agent etc has been manufactured to ensure the quality of antiwashout underwater concrete because of being difficulty in ascertaining construction situation by the naked eye. The properties of high quality antiwashout underwater concrete that were aimed at affluent fluidity, workability and the compressive strength of 450 kgf/$\textrm{cm}^2$ at 28 ages using two types of blended cements are following as;(1) Setting time of antiwashout underwater concretes using blended cements was more greatly delayed than that of control concrete, however, was satisfied with criteria value of "Quality standard specification of antiwashout admixture for concrete".(2) As a test results of slump flow, efflux time and box elevation of head, it was found that workability of high quality antiwashout underwater concrete was improved. (3) Heat evolution amount of OPC was 1.5 times as high as that of two types of bended cements in 72 hours. (4) Suspended solids of antiwashout underwater concrete using blended cements was more than that of control concrete, also compressive strength of high quality antiwashout underwater concrete was very low in early age, but was better than that of control concrete as to increasing ages.

Keywords

References

  1. 七メソト. コソクリ一ト no.503 特殊水中コソクリ一トの理況と展望 松岡康訓
  2. Gypsum and Lime no.213 特殊水中コソクリ一ト 立畑節郎
  3. コソクリ一ト工學年次論文報告集 特殊和中コソクリ一トの高强度 ·マスコソクリ一ト適用性に關する硏究 福留和人;情水洋次;下田努;宮野
  4. 日本土木學會論問集 v.19 no.466 水中コソクリ一トの歷史 中原;康;大友忠典
  5. 대한토목학회 학술지 v.39 no.4 수중콘크리트 공법에 대한 고찰 文瀚英
  6. 대한토목학회논문집 v.20 no.2-A 광물질혼화재를 혼합한 고강도 수중불분리성콘크리트의 기초물성 文瀚英;田重圭
  7. 대한토목학회 콘크리트용 수중불분리성혼화제 품질규준(안) 대한토목학회 제정
  8. コソクリ一ト工學年次論文報告潗 v.11 no.1 特殊性中コソクリ一トの結特性反ほす材料の影響に關する硏究 大反 健 外
  9. CANMET Pozzoleanic and Cementious Materials Malhotra. V. M.;Mehta. P.K.
  10. コソクリ一ト工學年次論文報告集 v.20 no.2 水中不分性コソクリ一トの低發化. 高流動化に關する硏究 舟橋政可;大西雅也;森本英樹;渡部 正
  11. コソクリ一ト工學年次報告集 v.13 no.1 水中不分性コソクリ一トの流動性の保特に反ばす各種混和濟の作用に關する硏究 大反 健;松岡康訓
  12. 日本土木學會 水中不分性コソクリ一ト設計施工指針(案) 日本土木學會 制定