Understanding the roles of Li2CO3 in a sulphoaluminate cement system at negative temperatures
To overcome the slow development of mechanical strengths of sulphoaluminate cement (CSA) in winter construction, this paper investigates the effects of different amounts of admixing Li2CO3 on the setting time, compressive strength, and cooling curve of CSA paste in negative temperatures (−5 °C, −10 ...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
|
| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523007544 |
| _version_ | 1827636235891376128 |
|---|---|
| author | Yanlin Huo Sile Hu Dong Lu Xiaoyu Han Huayang Sun Xiaobing Ma Tianan Liu Chen Zhang Zhitao Chen Jinguang Huang Yingzi Yang |
| author_facet | Yanlin Huo Sile Hu Dong Lu Xiaoyu Han Huayang Sun Xiaobing Ma Tianan Liu Chen Zhang Zhitao Chen Jinguang Huang Yingzi Yang |
| author_sort | Yanlin Huo |
| collection | DOAJ |
| description | To overcome the slow development of mechanical strengths of sulphoaluminate cement (CSA) in winter construction, this paper investigates the effects of different amounts of admixing Li2CO3 on the setting time, compressive strength, and cooling curve of CSA paste in negative temperatures (−5 °C, −10 °C, and −20 °C). The influence of admixing Li2CO3 on the hydration process and microstructure of CSA paste in a negative temperature environment is also studied using X-ray diffraction (XRD)-Rietveld quantitative analysis, Thermogravimetry (TG) analysis, and Scanning electron microscopy (SEM) observation. The results show that adding Li2CO3 into CSA can significantly improve the mechanical properties at an early age, shorten the curing time, and reduce the freezing point under negative temperatures. The XRD-Rietveld and TG analysis indicates that adding Li2CO3 can increase the consumption of C4A3S̅ and promote the generation of AFt at negative temperatures. It is recommended that the optimum dosage of Li2CO3 should be 0.16 wt% when used as an admixture for CSA systems in negative temperatures. |
| first_indexed | 2024-03-09T15:39:17Z |
| format | Article |
| id | doaj.art-baec2200c09d40c0a43f34470481f86d |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:39:17Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-baec2200c09d40c0a43f34470481f86d2023-11-25T04:49:21ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02574Understanding the roles of Li2CO3 in a sulphoaluminate cement system at negative temperaturesYanlin Huo0Sile Hu1Dong Lu2Xiaoyu Han3Huayang Sun4Xiaobing Ma5Tianan Liu6Chen Zhang7Zhitao Chen8Jinguang Huang9Yingzi Yang10School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China; Corresponding authors at: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China.School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, ChinaInstitute of Engineering Research, Shanghai Construction No 4 Group Co Ltd, Shanghai 200000, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China; Corresponding authors at: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China.Zhejiang Construction Engineering Group Co., Ltd., Hangzhou 310012, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin 150090, China; Corresponding authors at: School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China.To overcome the slow development of mechanical strengths of sulphoaluminate cement (CSA) in winter construction, this paper investigates the effects of different amounts of admixing Li2CO3 on the setting time, compressive strength, and cooling curve of CSA paste in negative temperatures (−5 °C, −10 °C, and −20 °C). The influence of admixing Li2CO3 on the hydration process and microstructure of CSA paste in a negative temperature environment is also studied using X-ray diffraction (XRD)-Rietveld quantitative analysis, Thermogravimetry (TG) analysis, and Scanning electron microscopy (SEM) observation. The results show that adding Li2CO3 into CSA can significantly improve the mechanical properties at an early age, shorten the curing time, and reduce the freezing point under negative temperatures. The XRD-Rietveld and TG analysis indicates that adding Li2CO3 can increase the consumption of C4A3S̅ and promote the generation of AFt at negative temperatures. It is recommended that the optimum dosage of Li2CO3 should be 0.16 wt% when used as an admixture for CSA systems in negative temperatures.http://www.sciencedirect.com/science/article/pii/S2214509523007544Sulphoaluminate cement (CSA)Li2CO3HydrationMechanical propertiesNegative temperature |
| spellingShingle | Yanlin Huo Sile Hu Dong Lu Xiaoyu Han Huayang Sun Xiaobing Ma Tianan Liu Chen Zhang Zhitao Chen Jinguang Huang Yingzi Yang Understanding the roles of Li2CO3 in a sulphoaluminate cement system at negative temperatures Case Studies in Construction Materials Sulphoaluminate cement (CSA) Li2CO3 Hydration Mechanical properties Negative temperature |
| title | Understanding the roles of Li2CO3 in a sulphoaluminate cement system at negative temperatures |
| title_full | Understanding the roles of Li2CO3 in a sulphoaluminate cement system at negative temperatures |
| title_fullStr | Understanding the roles of Li2CO3 in a sulphoaluminate cement system at negative temperatures |
| title_full_unstemmed | Understanding the roles of Li2CO3 in a sulphoaluminate cement system at negative temperatures |
| title_short | Understanding the roles of Li2CO3 in a sulphoaluminate cement system at negative temperatures |
| title_sort | understanding the roles of li2co3 in a sulphoaluminate cement system at negative temperatures |
| topic | Sulphoaluminate cement (CSA) Li2CO3 Hydration Mechanical properties Negative temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523007544 |
| work_keys_str_mv | AT yanlinhuo understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT silehu understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT donglu understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT xiaoyuhan understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT huayangsun understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT xiaobingma understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT tiananliu understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT chenzhang understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT zhitaochen understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT jinguanghuang understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures AT yingziyang understandingtherolesofli2co3inasulphoaluminatecementsystematnegativetemperatures |