• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Surface chemistry of calcium aluminosilicate hydrate (C-A-S-H) for ions immobilization and transport in low carbon cementitious materials

Research Project

Project/Area Number 16K18129
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Civil engineering materials/Construction/Construction management
Research InstitutionHokkaido University

Principal Investigator

Yogarajah Elakneswaran  北海道大学, 工学研究院, 特任准教 (60769090)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
KeywordsCement chemistry / Surface chemistry / Ionic adsorption / Diffusion / C-A-S-H / Ionic ingress / Modelling / surface chemistry / ionic adsorption / modelling
Outline of Final Research Achievements

Alumina-rich supplementary cementitious materials produces aluminium incorporated calcium silicate hydrate, C-A-S-H. The electrostatic properties of the C-A-S-H gel are significantly different from the conventional C-S-H, which may affect the durability performance. This research project focuses on the surface electrical properties mainly surface charge of C-S-H and C-A-S-H. A methodology was proposed to determine the properties from the experimental data and fitting the data to a surface complexation model. Subsequently, the model was verified with experimental data focused on chloride adsorption considering corrosion of reinforcement in concrete. The developed model were coupled with the hydration and reactive transport models to predict the ionic ingress in cementitious materials. The model was verified with experimental data for chloride ingress in slag-blended cementitious materials. The methodology will be applied to C-A-S-H to understand the its structure and the properties.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (7 results)

All 2018 2017 2016

All Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (5 results)

  • [Journal Article] Influence of Surface Electrical Properties of C-S-H on Chloride Binding in Slag-Blended Cementitious Materials2018

    • Author(s)
      Elakneswaran Yogarajah; Toyoharu Nawa; and Kiyofumi Kurumisawa
    • Journal Title

      Journal of Materials in Civil Engineering

      Volume: 30 Pages: 1-7

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Impact of Tortuosity on Chloride Ion Diffusion in Slag-Blended Cementitious Materials2017

    • Author(s)
      Hatanaka Akira、Elakneswaran Yogarajah、Kurumisawa Kiyofumi、Nawa Toyoharu
    • Journal Title

      Journal of Advanced Concrete Technology

      Volume: 15 Issue: 8 Pages: 426-439

    • DOI

      10.3151/jact.15.426

    • NAID

      130006034905

    • ISSN
      1346-8014, 1347-3913
    • Year and Date
      2017-08-31
    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Modelling of chloride ion diffusion in slag blended cementitious materials: Influence of tortuosity and surface electrical properties2017

    • Author(s)
      Elakeswaran Yogarajah
    • Organizer
      Concrete 2017
    • Place of Presentation
      Adelaide, South Australia
    • Year and Date
      2017-10-22
    • Related Report
      2016 Research-status Report
  • [Presentation] THE IMPORTANCE OF C-A-S-H SURFACE CHEMISTRY ON CHLORIDE RESISTANCE OF SLAG-BLENDED CEMENT2017

    • Author(s)
      Elakeswaran Yogarajah
    • Organizer
      ICACMS 2017
    • Place of Presentation
      IIT Madras & Hotel Leela Palace, Chennai, INDIA
    • Year and Date
      2017-09-05
    • Related Report
      2016 Research-status Report
  • [Presentation] Modelling of chloride ion transport in slag blended cementitious materials: Influence of tortuosity and surface electrical properties2017

    • Author(s)
      Elakneswaran Yogarajah
    • Organizer
      ICDC 2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] The importance of C-A-S-H surface chemistry on chloride resistance of slag-blended cement2017

    • Author(s)
      Elakneswaran Yogarajah
    • Organizer
      ICACMS 2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] Influence of surface electrical properties of C-S-H on chloride binding in slag-blended cementitious materials2016

    • Author(s)
      Elakeswaran Yogarajah
    • Organizer
      4th International Conference on Sustainable Construction Materials and Technologies
    • Place of Presentation
      Las Vegas, USA
    • Year and Date
      2016-08-07
    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2019-03-29  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi