scholarly journals Silicate Anion Structural Change in Calcium Silicate Hydrate Gel on Dissolution of Hydrated Cement

2002 ◽  
Vol 39 (5) ◽  
pp. 540-547 ◽  
Author(s):  
Kazuko HAGA ◽  
Masahito SHIBATA ◽  
Michihiko HIRONAGA ◽  
Satoru TANAKA ◽  
Shinya NAGASAKI
Keyword(s):  
Structural Change ◽  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Hydrated Cement ◽  
Silicate Anion

scholarly journals Structural changes in calcium silicate hydrate gel and resulting improvement in phosphate species removal properties after mechanochemical treatment

2018 ◽  
Vol 5 (12) ◽  
pp. 181403 ◽  
Author(s):  
Hirotaka Maeda ◽  
Satoshi Yokota ◽  
Toshihiro Kasuga
Keyword(s):  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Structural Changes ◽  
Mechanochemical Treatment ◽  
Gel Structure ◽  
Silicate Anion ◽  
Aqueous Environments ◽  
Phosphate Recovery ◽  
Phosphate Species ◽  
Species Removal

The discharge of phosphate species into aqueous environments is a key issue for eutrophication prevention. In this study, we investigate a mechanochemical treatment of calcium silicate hydrate (C-S-H) gel with different organic solvents with the aim of changing its structure and improving its phosphate species removal properties. The treatment leads to a collapse of the gel structure, resulting in the formation of defective structures in the silicate anion chains. The C-S-H gel sample milled with acetone exhibits better phosphate species recovery characteristics than does the unmilled C-S-H gel sample or the C-S-H gel sample milled with 1-propanol. Ultraviolet irradiation during phosphate recovery using the C-S-H gel sample milled with acetone further enhances the recovery properties.

Small-Angle Neutron Scattering from Hydrated Cement Pastes

1994 ◽  
Vol 376 ◽  
Author(s):  
L.P. Aldridge ◽  
W.K. Bertram ◽  
T.M. Sabine ◽  
J Bukowski ◽  
J.F. Young ◽  
...  
Keyword(s):  
Data Analysis ◽  
Neutron Scattering ◽  
Cement Paste ◽  
Small Angle ◽  
Calcium Silicate ◽  
Small Angle Neutron Scattering ◽  
Calcium Silicate Hydrate ◽  
Hydrated Cement ◽  
Cement Pastes ◽  
Hydrated Cement Paste

ABSTRACTSmall angle neutron scattering (SANS) has been used to examine hydrated cement pastes with water-to-cement ratios between 0.25 and 0.8 and cured for 28 days. Various methods of data analysis are applied to the pastes.Fitting the entire SANS spectra of the hydrated cement paste has suggested that there are two scattering entities in the paste. There is some evidence to suggest that one scattering entity is globules of calcium silicate hydrate formed in the hydrated paste.

Multiple ions transport and interaction in calcium silicate hydrate gel nanopores: Effects of saturation and tortuosity

2021 ◽  
Vol 283 ◽  
pp. 122638
Author(s):  
Zhiyong Liu ◽  
Yuncheng Wang ◽  
Dong Xu ◽  
Chuyue Zang ◽  
Yunsheng Zhang ◽  
...  
Keyword(s):  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Ions Transport

Experimental and theoretical evidence of overcharging of calcium silicate hydrate

2007 ◽  
Vol 309 (2) ◽  
pp. 303-307 ◽  
Author(s):  
Christophe Labbez ◽  
André Nonat ◽  
Isabelle Pochard ◽  
Bo Jönsson
Keyword(s):  
Calcium Silicate ◽  
Calcium Silicate Hydrate ◽  
Theoretical Evidence
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