| 研究課題/領域番号 |
16K18129
|
|---|
| 研究機関 | 北海道大学 |
|---|
研究代表者 |
Y Elakneswaran 北海道大学, 工学研究院, 特任助教 (60769090)
|
|---|
| 研究期間 (年度) |
2016-04-01 – 2018-03-31
|
| キーワード | Cement chemistry / C-A-S-H / surface chemistry / ionic adsorption / modelling |
|---|
| 研究実績の概要 |
Three different calcium silicate hydrates (C-S-H) with Ca/Si ratio of 0.8, 1.0, and 1.5 were prepared and characterised by various experimental methods. The surface site densities of C-S-H were determined from 29Si MAS NMR and specific surface area. Potentiometric titration, and zeta potential of C-S-H suspensions in NaOH Ca(OH)2, and CaCl2 solutions were conducted and the experimental results were fitted to surface complexation model, called CD-MUSIC (Charge Distribution MUlti Site Ion Complexation) modelling results to determine associated equilibrium constants for dissociation and ionic adsorption. A batch experiment was performed to determine Ca2+ and Cl- adsorption on C-S-H surface and compared with modelling results. Two papers have submitted to journals and they are under review.
|
| 現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
A delay on synthesising pure calcium aluminosilicate hydrate (C-A-S-H). Now, I succeed to synthesise C-A-S-H and conducting potentiometric titration and zeta potential experiments to determine surface electrical properties.
|
| 今後の研究の推進方策 |
The remaining part of Work-packages 2 and 3: The other ions (Na+, K+, Cs+, and SO42-) adsorption on C-S-H; determination of surface site density and associated equilibrium constants of C-A-S-H gels and their ionic adsorption capacity.
Work-package 3: Experiments and surface complexation modelling on slag containing paste
Work-package 4: Development and verification of a coupled ionic adsorption and reactive transport model for slag containing materials
|
| 次年度使用額が生じた理由 |
A delay on initiation of experimental works and synthesizing pure calcium aluminosilicate hydrates. T
|
| 次年度使用額の使用計画 |
I will cover the rest of experimental work of last year in addition to this year planned research work.
|
