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Experimental Investigation and Theoretical Modeling of Nanosilica Activity in Concrete
Joint Authors
Lee, Han-Seung
Cho, Hyeong-Kyu
Wang, Xiao-Yong
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-08-11
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
This paper presents experimental investigations and theoretical modeling of the hydration reaction of nanosilica blended concrete with different water-to-binder ratios and different nanosilica replacement ratios.
The developments of chemically bound water contents, calcium hydroxide contents, and compressive strength of Portland cement control specimens and nanosilica blended specimens were measured at different ages: 1 day, 3 days, 7 days, 14 days, and 28 days.
Due to the pozzolanic reaction of nanosilica, the contents of calcium hydroxide in nanosilica blended pastes are considerably lower than those in the control specimens.
Compared with the control specimens, the extent of compressive strength enhancement in the nanosilica blended specimens is much higher at early ages.
Additionally, a blended cement hydration model that considers both the hydration reaction of cement and the pozzolanic reaction of nanosilica is proposed.
The properties of nanosilica blended concrete during hardening were evaluated using the degree of hydration of cement and the reaction degree of nanosilica.
The calculated chemically bound water contents, calcium hydroxide contents, and compressive strength were generally consistent with the experimental results.
American Psychological Association (APA)
Lee, Han-Seung& Cho, Hyeong-Kyu& Wang, Xiao-Yong. 2014. Experimental Investigation and Theoretical Modeling of Nanosilica Activity in Concrete. Journal of Nanomaterials،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1041199
Modern Language Association (MLA)
Lee, Han-Seung…[et al.]. Experimental Investigation and Theoretical Modeling of Nanosilica Activity in Concrete. Journal of Nanomaterials No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-1041199
American Medical Association (AMA)
Lee, Han-Seung& Cho, Hyeong-Kyu& Wang, Xiao-Yong. Experimental Investigation and Theoretical Modeling of Nanosilica Activity in Concrete. Journal of Nanomaterials. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1041199
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1041199