Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis
This study aimed to prepare poorly ordered calcium silicate hydrate (C-S-H) via the hydrothermal synthesis method, using ground quartz sand powder and lime as starting materials. The fineness of quartz sand powder under different grinding time and varied grinding aids content was investigated. It fu...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523009270 |
| _version_ | 1797404594961121280 |
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| author | Guangxiang Ji Xiaoqin Peng Shuping Wang Jingjing Li Keke Sun Huihai Chi |
| author_facet | Guangxiang Ji Xiaoqin Peng Shuping Wang Jingjing Li Keke Sun Huihai Chi |
| author_sort | Guangxiang Ji |
| collection | DOAJ |
| description | This study aimed to prepare poorly ordered calcium silicate hydrate (C-S-H) via the hydrothermal synthesis method, using ground quartz sand powder and lime as starting materials. The fineness of quartz sand powder under different grinding time and varied grinding aids content was investigated. It further affected the formation of calcium silicate hydrate. Results showed that the main synthesized product was crystalline dicalcium silicate hydrate (C2SH) with a small amount of C-S-H when quartz sand was ground to 29.95 µm for D50, attributed to the coarse particle size with a low silica reaction rate. Increasing the grinding time and grinding aid content of quartz sand improved the silica reaction rate and accelerated the formation of calcium silicate hydrate. Adding 1‰ grinding aid content would greatly improve the grinding efficiency, and the particle size of quartz sand powder was greatly reduced to the smallest value recorded in this study (D50 was 21.08 µm), which was beneficial to the transformation of C-S-H from C2SH. Meanwhile, C-S-H underwent a change from having a flocculated morphology to a needle-like, short-rod-like and fibrous morphology. |
| first_indexed | 2024-03-09T02:57:17Z |
| format | Article |
| id | doaj.art-a30307002b854073903454a04f936037 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T02:57:17Z |
| publishDate | 2024-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-a30307002b854073903454a04f9360372023-12-05T04:15:01ZengElsevierCase Studies in Construction Materials2214-50952024-07-0120e02746Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesisGuangxiang Ji0Xiaoqin Peng1Shuping Wang2Jingjing Li3Keke Sun4Huihai Chi5Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, China; Correspondence to: Department of Building Materials, College of Materials Science and Engineering, Chongqing University, Shazhengjie 174, Chongqing 400045, China.College of Materials Science and Engineering, Chongqing University, Chongqing 400045, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400045, ChinaThis study aimed to prepare poorly ordered calcium silicate hydrate (C-S-H) via the hydrothermal synthesis method, using ground quartz sand powder and lime as starting materials. The fineness of quartz sand powder under different grinding time and varied grinding aids content was investigated. It further affected the formation of calcium silicate hydrate. Results showed that the main synthesized product was crystalline dicalcium silicate hydrate (C2SH) with a small amount of C-S-H when quartz sand was ground to 29.95 µm for D50, attributed to the coarse particle size with a low silica reaction rate. Increasing the grinding time and grinding aid content of quartz sand improved the silica reaction rate and accelerated the formation of calcium silicate hydrate. Adding 1‰ grinding aid content would greatly improve the grinding efficiency, and the particle size of quartz sand powder was greatly reduced to the smallest value recorded in this study (D50 was 21.08 µm), which was beneficial to the transformation of C-S-H from C2SH. Meanwhile, C-S-H underwent a change from having a flocculated morphology to a needle-like, short-rod-like and fibrous morphology.http://www.sciencedirect.com/science/article/pii/S2214509523009270Quartz sandParticle sizeGrinding aidHydrothermal synthesisPoorly ordered calcium silicate hydrate |
| spellingShingle | Guangxiang Ji Xiaoqin Peng Shuping Wang Jingjing Li Keke Sun Huihai Chi Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis Case Studies in Construction Materials Quartz sand Particle size Grinding aid Hydrothermal synthesis Poorly ordered calcium silicate hydrate |
| title | Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis |
| title_full | Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis |
| title_fullStr | Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis |
| title_full_unstemmed | Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis |
| title_short | Influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis |
| title_sort | influence of ground quartz sand finesses on the formation of poorly ordered calcium silicate hydrate prepared by dynamically hydrothermal synthesis |
| topic | Quartz sand Particle size Grinding aid Hydrothermal synthesis Poorly ordered calcium silicate hydrate |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523009270 |
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