Effects of Nano-SiO2 and SAP on Hydration Process of Early-Age Cement Paste Using LF-NMR
Joint Authors
Zhao, Haitao
Wan, Yi
Xie, Jun
Jiang, Kaidi
Huang, Donghui
Chen, Xiaodong
Li, Shihai
Jia, Ruiming
Sun, Gaoyang
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-03-23
Country of Publication
Egypt
No. of Pages
9
Abstract EN
The effects of nano-SiO2 and superabsorbent polymer on the hydration process of early-age cement paste are investigated through the physically bound water evolution test by means of the low-field nuclear magnetic resonance technology.
The test results show that the hydration process can be characterized by four-stage patterns based on the zero points of the second-order differential hydration curve, i.e., the initial, accelerated, decelerated, and steady periods.
The beginning time of each stage is postponed and the hydration duration is prolonged with an increasing water to cement ratio.
The beginning time of each stage and the hydration duration are shortened with an increasing content of nano-SiO2.
And the beginning time of each stage and the hydration duration are prolonged with an increasing content of superabsorbent polymer.
Based on the test data and the Avrami–Erofeev model, a modified hydration model taking the influence of nano-SiO2 and SAP into account is proposed, and the predicted results are consistent with the test results.
American Psychological Association (APA)
Zhao, Haitao& Wan, Yi& Xie, Jun& Jiang, Kaidi& Huang, Donghui& Chen, Xiaodong…[et al.]. 2020. Effects of Nano-SiO2 and SAP on Hydration Process of Early-Age Cement Paste Using LF-NMR. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1128752
Modern Language Association (MLA)
Zhao, Haitao…[et al.]. Effects of Nano-SiO2 and SAP on Hydration Process of Early-Age Cement Paste Using LF-NMR. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1128752
American Medical Association (AMA)
Zhao, Haitao& Wan, Yi& Xie, Jun& Jiang, Kaidi& Huang, Donghui& Chen, Xiaodong…[et al.]. Effects of Nano-SiO2 and SAP on Hydration Process of Early-Age Cement Paste Using LF-NMR. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1128752
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1128752