Evaluation on chloride diffusion coefficient of blast-furance slag cement concrete

Mingdi Gao, Hidenori Hamada, Yasutaka Sagawa, Takanori Ikeda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Blast-furnace slag cement (BB) is made by mixing granulated blast-furnace slag into Ordinary Portland cement (N). Slag cement concrete has been intensively studied because of its ability to get improved durability. However, in order to get high durability of slag ccmcnt concrete, enough wet curing condition and curing period is necessary. At present technical situation, there are not enough unified techniques to evaluate the chloride ion diffusion properity of slag cement concrete quantitatively. And the relation between various test methods and the chloride ion diffusion coefficient is also not examined thoroughly. In this study, by converting the substitution rate of slag and by changing its curing condition, compressive strength of the BB, not curcd in moisture was much lower than the other cured in wet condition. While, in longer moisture curing it can get the same strength as the N. From the results of both electro-migration test and submergence in salt water test, the higher the substitution rate of slag and the longer the moist curing period is, the smaller the diffusion coefficient is. And the influence level of cumulative pore volume on chloride diffusion property is different between N and BB.

Original languageEnglish
Title of host publicationAdvances in Concrete Structural Durability - Proceedings of the 2nd International Conference on Durability of Concrete Structures, ICDCS 2010
PublisherHokkaido University Press
Pages243-248
Number of pages6
ISBN (Print)9784832903609
Publication statusPublished - Jan 1 2010
Event2nd International Conference on Durability of Concrete Structures, ICDCS 2010 - Sapporo, Japan
Duration: Nov 24 2010Nov 26 2010

Publication series

NameAdvances in Concrete Structural Durability - Proceedings of the 2nd International Conference on Durability of Concrete Structures, ICDCS 2010

Other

Other2nd International Conference on Durability of Concrete Structures, ICDCS 2010
CountryJapan
CitySapporo
Period11/24/1011/26/10

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Ocean Engineering
  • Building and Construction

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  • Cite this

    Gao, M., Hamada, H., Sagawa, Y., & Ikeda, T. (2010). Evaluation on chloride diffusion coefficient of blast-furance slag cement concrete. In Advances in Concrete Structural Durability - Proceedings of the 2nd International Conference on Durability of Concrete Structures, ICDCS 2010 (pp. 243-248). (Advances in Concrete Structural Durability - Proceedings of the 2nd International Conference on Durability of Concrete Structures, ICDCS 2010). Hokkaido University Press.