Effect of modified phosphogypsum on the dimensional stability of supersulfated cement-based materials
Compared to ordinary Portland cement (OPC), supersulfated cement (SSC) is an environmentally friendly cement. Phosphogypsum (PG) is commonly utilized as a sulfate activator in SSC. In this study, the effect of modified PG on the dimensional stability of supersulfated cement-based materials (SSCM) wa...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
|
| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509524013226 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841561301383380992 |
|---|---|
| author | Qingqing Jin Lu Wang Zhisheng Ren Xinyu Li Shuhua Liu |
| author_facet | Qingqing Jin Lu Wang Zhisheng Ren Xinyu Li Shuhua Liu |
| author_sort | Qingqing Jin |
| collection | DOAJ |
| description | Compared to ordinary Portland cement (OPC), supersulfated cement (SSC) is an environmentally friendly cement. Phosphogypsum (PG) is commonly utilized as a sulfate activator in SSC. In this study, the effect of modified PG on the dimensional stability of supersulfated cement-based materials (SSCM) was investigated. Taking the point of decrease in internal relative humidity as the time-zero of autogenous shrinkage, the lime neutralized PG (NPG) reduced the autogenous shrinkage of SSCM by 15.03 % at 28 days and 16.26 % at 90 days, suppressing the development of autogenous shrinkage in SSCM. However, the calcined PG (CPG) displayed the opposite trend. Both modified PG improved the drying shrinkage of SSCM, and the NPG resulted in less water loss. Compared to OPC, SSCM exhibited a rapid increase in autogenous shrinkage relative to drying shrinkage, which was intensified with CPG. Obviously, the NPG demonstrated superior modification effects on the dimensional stability of SSCM compared to CPG. |
| format | Article |
| id | doaj-art-f10a2ea005ab4162ab37d44fe8eb1bb6 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-f10a2ea005ab4162ab37d44fe8eb1bb62025-01-03T04:08:43ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04170Effect of modified phosphogypsum on the dimensional stability of supersulfated cement-based materialsQingqing Jin0Lu Wang1Zhisheng Ren2Xinyu Li3Shuhua Liu4State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei 430072, PR ChinaState Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei 430072, PR China; Corresponding authors.State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei 430072, PR ChinaHydraulic Concrete Institute, China Three Gorges Corporation, Beijing 10038, PR ChinaState Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, Hubei 430072, PR China; Corresponding authors.Compared to ordinary Portland cement (OPC), supersulfated cement (SSC) is an environmentally friendly cement. Phosphogypsum (PG) is commonly utilized as a sulfate activator in SSC. In this study, the effect of modified PG on the dimensional stability of supersulfated cement-based materials (SSCM) was investigated. Taking the point of decrease in internal relative humidity as the time-zero of autogenous shrinkage, the lime neutralized PG (NPG) reduced the autogenous shrinkage of SSCM by 15.03 % at 28 days and 16.26 % at 90 days, suppressing the development of autogenous shrinkage in SSCM. However, the calcined PG (CPG) displayed the opposite trend. Both modified PG improved the drying shrinkage of SSCM, and the NPG resulted in less water loss. Compared to OPC, SSCM exhibited a rapid increase in autogenous shrinkage relative to drying shrinkage, which was intensified with CPG. Obviously, the NPG demonstrated superior modification effects on the dimensional stability of SSCM compared to CPG.http://www.sciencedirect.com/science/article/pii/S2214509524013226Supersulphated cementModified phosphogypsumShrinkage characterDimensional stabilityLong-term performance |
| spellingShingle | Qingqing Jin Lu Wang Zhisheng Ren Xinyu Li Shuhua Liu Effect of modified phosphogypsum on the dimensional stability of supersulfated cement-based materials Case Studies in Construction Materials Supersulphated cement Modified phosphogypsum Shrinkage character Dimensional stability Long-term performance |
| title | Effect of modified phosphogypsum on the dimensional stability of supersulfated cement-based materials |
| title_full | Effect of modified phosphogypsum on the dimensional stability of supersulfated cement-based materials |
| title_fullStr | Effect of modified phosphogypsum on the dimensional stability of supersulfated cement-based materials |
| title_full_unstemmed | Effect of modified phosphogypsum on the dimensional stability of supersulfated cement-based materials |
| title_short | Effect of modified phosphogypsum on the dimensional stability of supersulfated cement-based materials |
| title_sort | effect of modified phosphogypsum on the dimensional stability of supersulfated cement based materials |
| topic | Supersulphated cement Modified phosphogypsum Shrinkage character Dimensional stability Long-term performance |
| url | http://www.sciencedirect.com/science/article/pii/S2214509524013226 |
| work_keys_str_mv | AT qingqingjin effectofmodifiedphosphogypsumonthedimensionalstabilityofsupersulfatedcementbasedmaterials AT luwang effectofmodifiedphosphogypsumonthedimensionalstabilityofsupersulfatedcementbasedmaterials AT zhishengren effectofmodifiedphosphogypsumonthedimensionalstabilityofsupersulfatedcementbasedmaterials AT xinyuli effectofmodifiedphosphogypsumonthedimensionalstabilityofsupersulfatedcementbasedmaterials AT shuhualiu effectofmodifiedphosphogypsumonthedimensionalstabilityofsupersulfatedcementbasedmaterials |