Concrete Journal
Online ISSN : 2186-2753
Print ISSN : 0387-1061
ISSN-L : 0387-1061
Volume 57 , Issue 11
Showing 1-11 articles out of 11 articles from the selected issue
  • K. Kusunoki, M. Teshigawara
    2019 Volume 57 Issue 11 Pages 849-854
    Published: 2019
    Released: November 01, 2020

    Since Freeman announced the capacity spectrum method in 1978, this method has been studied as one of the simple nonlinear response estimation methods. In Japan, owing to the revision of building-related standards for performance standardization in 2000, this method was added to seismic design methods as a limit strength calculation method. Taking into account subsequent research findings, in 2019, the Architectural Institute of Japan published “AIJ Seismic Performance Evaluation Guidelines for Reinforced Concrete Buildings Based on the Capacity Spectrum Method,” which includes building modeling, methods of analysis, and assurance design methods. These are AIJ's first guidelines for the capacity spectrum method, and they are expected to contribute to the popularization of this method in the future.

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  • E. Sakai, H. Watanabe, T. Iyoda, D. Hayashi
    2019 Volume 57 Issue 11 Pages 855-860
    Published: 2019
    Released: November 01, 2020

    The use of binders using ground granulated blast-furnace slag, which is one of the initiatives for concrete materials aimed at reducing environmental impact, bears consideration. A vast amount of knowledge about blast furnace cement Class B has been accumulated over the years and its use has been steadily promoted. On the other hand, the use of cement with a high substitution rate that is equivalent to blast furnace cement Class C has not made much progress. This paper gives an overview of the Recommendations for Design and Construction of Concrete Using Ground Granulated Blast-Furnace Slag, which have been revised for the first time in a quarter century. The content was revised in line with the 2017 Standard Specifications for Concrete Structures to allow design and construction based on the latest standards. Further, newly obtained knowledge and new usage methods have been summarized in the Appendix.

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