Long-Term Performance and Durability of Heat-Treated Alkali-Activated Slag Mortar Containing Silica Fume
This study aimed to investigate the combined influence of heat curing and partial replacement of silica fume on the long-term behavior of alkali-activated slag (AAS) mortar. Silica fume replacement levels of 0%, 5%, and 10% were examined, with curing conducted at temperatures of 23 ± 2 and 80°C. The...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2024/3969944 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832553136006365184 |
|---|---|
| author | Naser Sameti Ebrahim Ghiasvand Ehsanollah Zeighami Seyyed Mohammad Mirhosseini |
| author_facet | Naser Sameti Ebrahim Ghiasvand Ehsanollah Zeighami Seyyed Mohammad Mirhosseini |
| author_sort | Naser Sameti |
| collection | DOAJ |
| description | This study aimed to investigate the combined influence of heat curing and partial replacement of silica fume on the long-term behavior of alkali-activated slag (AAS) mortar. Silica fume replacement levels of 0%, 5%, and 10% were examined, with curing conducted at temperatures of 23 ± 2 and 80°C. The alkaline activator consisted of sodium hydroxide solution (4 M) mixed with sodium silicate in a 3 : 1 ratio by weight. The performance of the fabricated specimens was evaluated through compressive strength testing, mass change analysis, X-ray diffraction, and scanning electron microscopy. Heat treatment resulted in improved performance of AAS mortars, while silica fume replacement also positively influenced mortar behavior. Notably, the 5% replacement rate yielded the most favorable outcomes. However, it was observed that the long-term compressive strength of AAS mortar specimens decreased significantly. Potential adverse factors contributing to this decline were discussed. Furthermore, the durability of mortar samples exposed to adverse conditions was investigated. Results indicated that the combined use of heat curing and a 5% silica fume replacement level produced the best overall performance. |
| format | Article |
| id | doaj-art-86e498847d85439985428aae643a3b8c |
| institution | Kabale University |
| issn | 1687-8094 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-86e498847d85439985428aae643a3b8c2025-02-03T05:55:20ZengWileyAdvances in Civil Engineering1687-80942024-01-01202410.1155/2024/3969944Long-Term Performance and Durability of Heat-Treated Alkali-Activated Slag Mortar Containing Silica FumeNaser Sameti0Ebrahim Ghiasvand1Ehsanollah Zeighami2Seyyed Mohammad Mirhosseini3Department of Civil EngineeringCivil Engineering DepartmentDepartment of Civil EngineeringDepartment of Civil EngineeringThis study aimed to investigate the combined influence of heat curing and partial replacement of silica fume on the long-term behavior of alkali-activated slag (AAS) mortar. Silica fume replacement levels of 0%, 5%, and 10% were examined, with curing conducted at temperatures of 23 ± 2 and 80°C. The alkaline activator consisted of sodium hydroxide solution (4 M) mixed with sodium silicate in a 3 : 1 ratio by weight. The performance of the fabricated specimens was evaluated through compressive strength testing, mass change analysis, X-ray diffraction, and scanning electron microscopy. Heat treatment resulted in improved performance of AAS mortars, while silica fume replacement also positively influenced mortar behavior. Notably, the 5% replacement rate yielded the most favorable outcomes. However, it was observed that the long-term compressive strength of AAS mortar specimens decreased significantly. Potential adverse factors contributing to this decline were discussed. Furthermore, the durability of mortar samples exposed to adverse conditions was investigated. Results indicated that the combined use of heat curing and a 5% silica fume replacement level produced the best overall performance.http://dx.doi.org/10.1155/2024/3969944 |
| spellingShingle | Naser Sameti Ebrahim Ghiasvand Ehsanollah Zeighami Seyyed Mohammad Mirhosseini Long-Term Performance and Durability of Heat-Treated Alkali-Activated Slag Mortar Containing Silica Fume Advances in Civil Engineering |
| title | Long-Term Performance and Durability of Heat-Treated Alkali-Activated Slag Mortar Containing Silica Fume |
| title_full | Long-Term Performance and Durability of Heat-Treated Alkali-Activated Slag Mortar Containing Silica Fume |
| title_fullStr | Long-Term Performance and Durability of Heat-Treated Alkali-Activated Slag Mortar Containing Silica Fume |
| title_full_unstemmed | Long-Term Performance and Durability of Heat-Treated Alkali-Activated Slag Mortar Containing Silica Fume |
| title_short | Long-Term Performance and Durability of Heat-Treated Alkali-Activated Slag Mortar Containing Silica Fume |
| title_sort | long term performance and durability of heat treated alkali activated slag mortar containing silica fume |
| url | http://dx.doi.org/10.1155/2024/3969944 |
| work_keys_str_mv | AT nasersameti longtermperformanceanddurabilityofheattreatedalkaliactivatedslagmortarcontainingsilicafume AT ebrahimghiasvand longtermperformanceanddurabilityofheattreatedalkaliactivatedslagmortarcontainingsilicafume AT ehsanollahzeighami longtermperformanceanddurabilityofheattreatedalkaliactivatedslagmortarcontainingsilicafume AT seyyedmohammadmirhosseini longtermperformanceanddurabilityofheattreatedalkaliactivatedslagmortarcontainingsilicafume |