2020 Fiscal Year Annual Research Report
Characterising and modelling the chloride resistance of blended-cement concrete by considering the effect of supplementary elements from glass
| Project/Area Number |
19K15059
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| Research Institution | The University of Tokyo |
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Principal Investigator |
王 眺 東京大学, 大学院工学系研究科(工学部), 特任助教 (70822386)
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | Chloride / SCMs / aluminosilicate glass |
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| Outline of Annual Research Achievements |
We used the nano Al2O3 and SiO2 powder instead of synthetized aluminosilicate glasses. The mass fractions of nano Al2O3 and SiO2 powder were adjusted to represent silica fume, fly ash and metakaolin, respectively. The cement paste were curing at 20 ℃ under RH 99% for 6 months. The reaction was completed because we used nano materials. We designed the customized steady chloride diffusion setup to measure the chloride diffusion coefficient of blended cement paste. Experiment result shows that the chloride diffusion coefficient depends on the chloride concentration of solution and Ca/Si and Al/Si ratio of C-(A)-S-H gel. We are conducting the XRD, TGA and MIP test to measure the binding chloride content and microstructure.
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