THE EFFECTS OF RAPID CARBONIC ACID ON THE STRUCTURE OF THE MICROSTRUCTURE OF CALCIUM SILICATE
A possible method for carbon capture and storage is mineral carbonation of alkaline solid waste, such as used cement paste. By reusing the solid waste, environmental contamination may be decreased. One of the most common mineral phases that may be carbonated is calcium silicate hydrate (C-S-H). In t...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Zenodo
2023
|
Subjects: | |
Online Access: | https://doi.org/10.5281/zenodo.8141425 |
id |
ftzenodo:oai:zenodo.org:8141425 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:8141425 2024-09-15T18:01:40+00:00 THE EFFECTS OF RAPID CARBONIC ACID ON THE STRUCTURE OF THE MICROSTRUCTURE OF CALCIUM SILICATE Tadjikhodjaeva Sayyora Rustamovna June Chang 2023-05-25 https://doi.org/10.5281/zenodo.8141425 eng eng Zenodo https://doi.org/10.5281/zenodo.8141425 https://doi.org/10.5281/zenodo.8141424 oai:zenodo.org:8141425 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode QURILISHDA INNOVATSION TEXNOLOGIYALAR, TASHKENT,UZBEKISTAN, 2023-05-25 cement nuclear magnetic resonance carbonation microstructure calcium silicate hydrate info:eu-repo/semantics/article 2023 ftzenodo https://doi.org/10.5281/zenodo.814142510.5281/zenodo.8141424 2024-07-25T12:50:47Z A possible method for carbon capture and storage is mineral carbonation of alkaline solid waste, such as used cement paste. By reusing the solid waste, environmental contamination may be decreased. One of the most common mineral phases that may be carbonated is calcium silicate hydrate (C-S-H). In this research, C-S-H with a C/S ratio of 1.50 was synthesized, and the effects of rapid carbonation on microstructure were examined. The Rietveld refineness (QXRD) was used to describe the carbonation products, while nuclear magnetic resonance, scanning electron microscopy, and nitrogen physisorption were each used to examine the microstructure. The findings show that carbonation causes the development of three distinct polymorphs of calcium carbonate as well as silica gel. Aragonite and vaterite have very low decomposition temperatures, whereas well-crystallized calcite decomposes at a greater temperature. Calcium carbonate starts to break down about 300 °C. Due to the stack of thick calcium carbonate, the average pore width drops from 10.33 nm to 6.69 nm, and the specific surface area decreases from 85.6 m 2 /g to 67.7 m2/g. In the interlayer of C-S-H, the Ca-O decalcifies, and the remaining silica tetrahedron protonates or connects with other silica tetrahedrons to create Q 3 or Q 4 with a higher degree of polymerization. Article in Journal/Newspaper Carbonic acid Zenodo |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
cement nuclear magnetic resonance carbonation microstructure calcium silicate hydrate |
spellingShingle |
cement nuclear magnetic resonance carbonation microstructure calcium silicate hydrate Tadjikhodjaeva Sayyora Rustamovna June Chang THE EFFECTS OF RAPID CARBONIC ACID ON THE STRUCTURE OF THE MICROSTRUCTURE OF CALCIUM SILICATE |
topic_facet |
cement nuclear magnetic resonance carbonation microstructure calcium silicate hydrate |
description |
A possible method for carbon capture and storage is mineral carbonation of alkaline solid waste, such as used cement paste. By reusing the solid waste, environmental contamination may be decreased. One of the most common mineral phases that may be carbonated is calcium silicate hydrate (C-S-H). In this research, C-S-H with a C/S ratio of 1.50 was synthesized, and the effects of rapid carbonation on microstructure were examined. The Rietveld refineness (QXRD) was used to describe the carbonation products, while nuclear magnetic resonance, scanning electron microscopy, and nitrogen physisorption were each used to examine the microstructure. The findings show that carbonation causes the development of three distinct polymorphs of calcium carbonate as well as silica gel. Aragonite and vaterite have very low decomposition temperatures, whereas well-crystallized calcite decomposes at a greater temperature. Calcium carbonate starts to break down about 300 °C. Due to the stack of thick calcium carbonate, the average pore width drops from 10.33 nm to 6.69 nm, and the specific surface area decreases from 85.6 m 2 /g to 67.7 m2/g. In the interlayer of C-S-H, the Ca-O decalcifies, and the remaining silica tetrahedron protonates or connects with other silica tetrahedrons to create Q 3 or Q 4 with a higher degree of polymerization. |
format |
Article in Journal/Newspaper |
author |
Tadjikhodjaeva Sayyora Rustamovna June Chang |
author_facet |
Tadjikhodjaeva Sayyora Rustamovna June Chang |
author_sort |
Tadjikhodjaeva Sayyora Rustamovna |
title |
THE EFFECTS OF RAPID CARBONIC ACID ON THE STRUCTURE OF THE MICROSTRUCTURE OF CALCIUM SILICATE |
title_short |
THE EFFECTS OF RAPID CARBONIC ACID ON THE STRUCTURE OF THE MICROSTRUCTURE OF CALCIUM SILICATE |
title_full |
THE EFFECTS OF RAPID CARBONIC ACID ON THE STRUCTURE OF THE MICROSTRUCTURE OF CALCIUM SILICATE |
title_fullStr |
THE EFFECTS OF RAPID CARBONIC ACID ON THE STRUCTURE OF THE MICROSTRUCTURE OF CALCIUM SILICATE |
title_full_unstemmed |
THE EFFECTS OF RAPID CARBONIC ACID ON THE STRUCTURE OF THE MICROSTRUCTURE OF CALCIUM SILICATE |
title_sort |
effects of rapid carbonic acid on the structure of the microstructure of calcium silicate |
publisher |
Zenodo |
publishDate |
2023 |
url |
https://doi.org/10.5281/zenodo.8141425 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
QURILISHDA INNOVATSION TEXNOLOGIYALAR, TASHKENT,UZBEKISTAN, 2023-05-25 |
op_relation |
https://doi.org/10.5281/zenodo.8141425 https://doi.org/10.5281/zenodo.8141424 oai:zenodo.org:8141425 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.814142510.5281/zenodo.8141424 |
_version_ |
1810438763949588480 |