Well-Dispersed Silica Fume by Surface Modification and the Control of Cement Hydration
Joint Authors
Guo, Liping
Sun, Wei
Ma, Rui
Rong, Zhidan
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-08-06
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Silica fume (SF) is a valuable nanoscaled industrial by-product used in cementitious materials owing to its filling and pozzolanic effect.
However, the heavy agglomeration of SF is a severe and common problem.
In this study, surface modification with polyacrylic acid (PAA) was applied on SF to achieve a better dispersion and to optimize the hydration process of cement at early age.
The particle size distribution and surface properties of SF, as well as the cement hydration with modified SF, were investigated.
The results demonstrated that the agglomeration of SF particles was efficiently mitigated by the surface treatment with PAA, and the acceleration effect of SF was delayed by the resistance of the surface layer at early age.
However, the grafted PAA layer eventually dropped in alkali solution after 6 hours, and the hydration rate was increased again and continued for long time.
This work indicated that surface-modified SF was well dispersed and was able to regulate the hydration rate of cement.
American Psychological Association (APA)
Ma, Rui& Guo, Liping& Sun, Wei& Rong, Zhidan. 2018. Well-Dispersed Silica Fume by Surface Modification and the Control of Cement Hydration. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1116360
Modern Language Association (MLA)
Ma, Rui…[et al.]. Well-Dispersed Silica Fume by Surface Modification and the Control of Cement Hydration. Advances in Civil Engineering No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1116360
American Medical Association (AMA)
Ma, Rui& Guo, Liping& Sun, Wei& Rong, Zhidan. Well-Dispersed Silica Fume by Surface Modification and the Control of Cement Hydration. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1116360
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116360