Abstract
Alkali activated slag (AAS) has shown promising potential to replace ordinary Portland cement as a binder material. Synthesized from industrial by-products, AAS can show high strength, thermal resistance and good durability. However, AAS has been reported to exhibit high autogenous shrinkage. Autogenous shrinkage is a critical issue for building materials since it can induce micro- or macro-cracking when the materials are under restrained conditions. Hence, this work aims at mitigating the autogenous shrinkage of AAS by means of internal curing. The influences of internal curing on microstructure formation and autogenous shrinkage are investigated. The results show that internal curing provided by superabsorbent polymers is a promising way to reduce the autogenous shrinkage of AAS.
Original language | English |
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Title of host publication | 4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites |
Subtitle of host publication | Microdurability 2020 |
Editors | Guang Ye, Hua Dong, Jiaping Liu, Erik Schlangen, Changwen Miao |
Publisher | Delft University of Technology |
Pages | 885-892 |
Number of pages | 8 |
ISBN (Electronic) | 978-94-6366-422-6 |
Publication status | Published - 2021 |
Event | 4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites - Online, Delft, Netherlands Duration: 29 Apr 2021 → 27 May 2021 Conference number: 4 https://www.microdurability2020.com/99721 |
Conference
Conference | 4th International Rilem Conference on Microstructure Related Durability of Cementitious Composites |
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Abbreviated title | Microdurability |
Country/Territory | Netherlands |
City | Delft |
Period | 29/04/21 → 27/05/21 |
Internet address |
Keywords
- Internal curing
- autogenous shrinkage
- alkali-activated materials
- slag
- superabsorbent polymers (SAP)