Effect of Dosage of Alkaline Activator on the Properties of Alkali-Activated Slag Pastes
Joint Authors
Jiao, Zhenzhen
Wang, Ying
Huang, Wenxuan
Zheng, Wenzhong
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-12-16
Country of Publication
Egypt
No. of Pages
12
Abstract EN
This study focused on the engineering properties of alkali-activated slag (AAS) pastes prepared by mixing an activator consisting of sodium silicate and sodium hydroxide at room temperature.
The water-to-slag ratio of AAS paste was kept constant at 0.35 by mass.
AAS pastes were prepared using the activator with five different silicate moduli of 1, 1.2, 1.4, 1.6, and 1.8 and three different Na2O contents of 6%, 8%, and 10%.
The results showed that both the silicate moduli and Na2O contents had significant effects on the engineering properties of AAS pastes.
All the AAS pastes exhibited properties such as fast setting, good workability, and high early compressive strength.
The final setting time varied from 9 to 36 min, and the fluidity was in the range of 147–226 mm.
The 1 d compressive strength of all the AAS pastes, which could be easily achieved, had values above 55 MPa, whereas the highest strength obtained was 102 MPa with the silicate modulus of 1 and Na2O content of 8% at room temperature.
The drying shrinkage increased as the silicate modulus increased.
Furthermore, the hydration products and microstructures of AAS pastes were explained according to the microanalysis methods.
American Psychological Association (APA)
Jiao, Zhenzhen& Wang, Ying& Zheng, Wenzhong& Huang, Wenxuan. 2018. Effect of Dosage of Alkaline Activator on the Properties of Alkali-Activated Slag Pastes. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1122008
Modern Language Association (MLA)
Jiao, Zhenzhen…[et al.]. Effect of Dosage of Alkaline Activator on the Properties of Alkali-Activated Slag Pastes. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1122008
American Medical Association (AMA)
Jiao, Zhenzhen& Wang, Ying& Zheng, Wenzhong& Huang, Wenxuan. Effect of Dosage of Alkaline Activator on the Properties of Alkali-Activated Slag Pastes. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1122008
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122008