Long-term (2 years) drying shrinkage evaluation of alkali-activated slag mortar: Experiments and partial factor analysis
Alkali-activated slag with many excellent properties was regarded as a novel low carbon building material, has received more and more attention. This research aims to study the impacts of alkali solution (alkali content and modulus), cement and gypsum contents on compressive strength, weight loss an...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523001353 |
| _version_ | 1797798940922347520 |
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| author | Shunfeng Wang Kai Wu Zhenghong Yang Luping Tang |
| author_facet | Shunfeng Wang Kai Wu Zhenghong Yang Luping Tang |
| author_sort | Shunfeng Wang |
| collection | DOAJ |
| description | Alkali-activated slag with many excellent properties was regarded as a novel low carbon building material, has received more and more attention. This research aims to study the impacts of alkali solution (alkali content and modulus), cement and gypsum contents on compressive strength, weight loss and drying shrinkage for alkali-activated slag mortar. Gypsum used as expanding source could compensate the drying shrinkage caused by silica and alkali components in the first three months, but it has a negative impact on the strength. The mainly results can be concluded that the alkali-activated slag blended with a cement content up to 20 wt% could effectively reduce the shrinkage and weight loss and increase the strength. Furthermore, the alkali content was below 3 wt%, the specimens possess relatively lower drying shrinkage. Based on the results of the test and analysis, the partial factors of combined activation on compressive strength and drying shrinkage of alkali-activated slag mortar were put forward. In the meantime, the relationships between compressive strength and combined activation factor are liner at 28, 90 and 365 days. Compressive strength and drying shrinkage could be estimated according to the combined activation and partial factor analysis. This work could provide a reasonable method for preparing the alkali-activated slag mortar and predict the shrinkage at different periods. |
| first_indexed | 2024-03-13T04:11:26Z |
| format | Article |
| id | doaj.art-61191d86b72c400da451d454a3ddf5f9 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:11:26Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-61191d86b72c400da451d454a3ddf5f92023-06-21T06:53:56ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e01956Long-term (2 years) drying shrinkage evaluation of alkali-activated slag mortar: Experiments and partial factor analysisShunfeng Wang0Kai Wu1Zhenghong Yang2Luping Tang3Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China; Division of Building Technology, Chalmers University of Technology, 41296 Gothenburg, SwedenKey Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, Tongji University, Shanghai 201804, ChinaKey Laboratory of Advanced Civil Engineering Materials of Ministry of Education, School of Materials Science and Engineering, Tongji University, Shanghai 201804, China; Corresponding authors.Division of Building Technology, Chalmers University of Technology, 41296 Gothenburg, Sweden; Corresponding authors.Alkali-activated slag with many excellent properties was regarded as a novel low carbon building material, has received more and more attention. This research aims to study the impacts of alkali solution (alkali content and modulus), cement and gypsum contents on compressive strength, weight loss and drying shrinkage for alkali-activated slag mortar. Gypsum used as expanding source could compensate the drying shrinkage caused by silica and alkali components in the first three months, but it has a negative impact on the strength. The mainly results can be concluded that the alkali-activated slag blended with a cement content up to 20 wt% could effectively reduce the shrinkage and weight loss and increase the strength. Furthermore, the alkali content was below 3 wt%, the specimens possess relatively lower drying shrinkage. Based on the results of the test and analysis, the partial factors of combined activation on compressive strength and drying shrinkage of alkali-activated slag mortar were put forward. In the meantime, the relationships between compressive strength and combined activation factor are liner at 28, 90 and 365 days. Compressive strength and drying shrinkage could be estimated according to the combined activation and partial factor analysis. This work could provide a reasonable method for preparing the alkali-activated slag mortar and predict the shrinkage at different periods.http://www.sciencedirect.com/science/article/pii/S2214509523001353Alkali-activated slag mortarShrinkageCompressive strengthPartial factor analysis |
| spellingShingle | Shunfeng Wang Kai Wu Zhenghong Yang Luping Tang Long-term (2 years) drying shrinkage evaluation of alkali-activated slag mortar: Experiments and partial factor analysis Case Studies in Construction Materials Alkali-activated slag mortar Shrinkage Compressive strength Partial factor analysis |
| title | Long-term (2 years) drying shrinkage evaluation of alkali-activated slag mortar: Experiments and partial factor analysis |
| title_full | Long-term (2 years) drying shrinkage evaluation of alkali-activated slag mortar: Experiments and partial factor analysis |
| title_fullStr | Long-term (2 years) drying shrinkage evaluation of alkali-activated slag mortar: Experiments and partial factor analysis |
| title_full_unstemmed | Long-term (2 years) drying shrinkage evaluation of alkali-activated slag mortar: Experiments and partial factor analysis |
| title_short | Long-term (2 years) drying shrinkage evaluation of alkali-activated slag mortar: Experiments and partial factor analysis |
| title_sort | long term 2 years drying shrinkage evaluation of alkali activated slag mortar experiments and partial factor analysis |
| topic | Alkali-activated slag mortar Shrinkage Compressive strength Partial factor analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523001353 |
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