Impacts of Space Restriction on the Microstructure of Calcium Silicate Hydrate
The effect of hydration space on cement hydration is essential. After a few days, space restriction affects the hydration kinetics which dominate the expansion, shrinkage and creep of cement materials. The influence of space restriction on the hydration products of tricalcium silicate was studied in...
Main Authors: | , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-06-01
|
Series: | Materials |
Subjects: | |
Online Access: | https://www.mdpi.com/1996-1944/14/13/3645 |
id |
doaj-c57ae90f44304904ac64a28fb26c3087 |
---|---|
record_format |
Article |
spelling |
doaj-c57ae90f44304904ac64a28fb26c30872021-07-15T15:40:51ZengMDPI AGMaterials1996-19442021-06-01143645364510.3390/ma14133645Impacts of Space Restriction on the Microstructure of Calcium Silicate HydrateYue Zhou0Zhongping Wang1Zheyu Zhu2Yuting Chen3Linglin Xu4Kai Wu5School of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, ChinaSchool of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, ChinaSchool of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, ChinaSchool of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, ChinaSchool of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, ChinaSchool of Materials Science and Engineering, Tongji University, 4800 Cao’an Road, Shanghai 201804, ChinaThe effect of hydration space on cement hydration is essential. After a few days, space restriction affects the hydration kinetics which dominate the expansion, shrinkage and creep of cement materials. The influence of space restriction on the hydration products of tricalcium silicate was studied in this paper. The microstructure, morphology and composition of calcium silicate hydrate (C-S-H) were explored from the perspective of a specific single micropore. A combination of Raman spectra, Fourier transform infrared spectra, scanning electron microscopy and energy dispersive X-ray spectroscopy were employed. The results show that space restriction affects the structure of the hydration products. The C-S-H formed in the micropores was mainly composed of Q<sup>3</sup> silicate tetrahedra with a high degree of polymerization. The C-S-H formed under standard conditions with a water to cement ratio of 0.5 mostly existed as Q<sup>2</sup> units. Space restriction during hydration is conducive to the formation of C-S-H with silica tetrahedra of a high polymerization degree, while the amount of water filling the micropore plays no obvious role on the polymeric structure of C-S-H during hydration.https://www.mdpi.com/1996-1944/14/13/3645calcium silicate hydrate (C-S-H)space restrictioncementhydration |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yue Zhou Zhongping Wang Zheyu Zhu Yuting Chen Linglin Xu Kai Wu |
spellingShingle |
Yue Zhou Zhongping Wang Zheyu Zhu Yuting Chen Linglin Xu Kai Wu Impacts of Space Restriction on the Microstructure of Calcium Silicate Hydrate Materials calcium silicate hydrate (C-S-H) space restriction cement hydration |
author_facet |
Yue Zhou Zhongping Wang Zheyu Zhu Yuting Chen Linglin Xu Kai Wu |
author_sort |
Yue Zhou |
title |
Impacts of Space Restriction on the Microstructure of Calcium Silicate Hydrate |
title_short |
Impacts of Space Restriction on the Microstructure of Calcium Silicate Hydrate |
title_full |
Impacts of Space Restriction on the Microstructure of Calcium Silicate Hydrate |
title_fullStr |
Impacts of Space Restriction on the Microstructure of Calcium Silicate Hydrate |
title_full_unstemmed |
Impacts of Space Restriction on the Microstructure of Calcium Silicate Hydrate |
title_sort |
impacts of space restriction on the microstructure of calcium silicate hydrate |
publisher |
MDPI AG |
series |
Materials |
issn |
1996-1944 |
publishDate |
2021-06-01 |
description |
The effect of hydration space on cement hydration is essential. After a few days, space restriction affects the hydration kinetics which dominate the expansion, shrinkage and creep of cement materials. The influence of space restriction on the hydration products of tricalcium silicate was studied in this paper. The microstructure, morphology and composition of calcium silicate hydrate (C-S-H) were explored from the perspective of a specific single micropore. A combination of Raman spectra, Fourier transform infrared spectra, scanning electron microscopy and energy dispersive X-ray spectroscopy were employed. The results show that space restriction affects the structure of the hydration products. The C-S-H formed in the micropores was mainly composed of Q<sup>3</sup> silicate tetrahedra with a high degree of polymerization. The C-S-H formed under standard conditions with a water to cement ratio of 0.5 mostly existed as Q<sup>2</sup> units. Space restriction during hydration is conducive to the formation of C-S-H with silica tetrahedra of a high polymerization degree, while the amount of water filling the micropore plays no obvious role on the polymeric structure of C-S-H during hydration. |
topic |
calcium silicate hydrate (C-S-H) space restriction cement hydration |
url |
https://www.mdpi.com/1996-1944/14/13/3645 |
work_keys_str_mv |
AT yuezhou impactsofspacerestrictiononthemicrostructureofcalciumsilicatehydrate AT zhongpingwang impactsofspacerestrictiononthemicrostructureofcalciumsilicatehydrate AT zheyuzhu impactsofspacerestrictiononthemicrostructureofcalciumsilicatehydrate AT yutingchen impactsofspacerestrictiononthemicrostructureofcalciumsilicatehydrate AT linglinxu impactsofspacerestrictiononthemicrostructureofcalciumsilicatehydrate AT kaiwu impactsofspacerestrictiononthemicrostructureofcalciumsilicatehydrate |
_version_ |
1721299028111523840 |