Effects of Nanosilica on Compressive Strength and Durability Properties of Concrete with Different Water to Binder Ratios
Joint Authors
Li, Weiwen
Torabian Isfahani, Forood
Redaelli, Elena
Lollini, Federica
Bertolini, Luca
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-04-06
Country of Publication
Egypt
No. of Pages
16
Abstract EN
The effects of the addition of different nanosilica dosages (0.5%, 1%, and 1.5% with respect to cement) on compressive strength and durability properties of concrete with water/binder ratios 0.65, 0.55, and 0.5 were investigated.
Water sorptivity, apparent chloride diffusion coefficient, electrical resistivity, and carbonation coefficient of concrete were measured.
The results showed that compressive strength significantly improved in case of water/binder = 0.65, while for water/binder = 0.5 no change was found.
Increasing nanosilica content, the water sorptivity decreased only for water/binder = 0.55.
The addition of 0.5% nanosilica decreased the apparent chloride diffusion coefficient for water/binder = 0.65 and 0.55; however, higher nanosilica dosages did not decrease it with respect to reference value.
The resistivity was elevated by 0.5% nanosilica for all water/binder ratios and by 1.5% nanosilica only for water/binder = 0.5.
The carbonation coefficient was not notably affected by increasing nanosilica dosages and even adverse effect was observed for water/binder = 0.65.
Further information of microstructure was also provided through characterization techniques such as X-ray diffraction, thermal gravimetric analysis, mercury intrusion porosimetry, and scanning electron microscopy.
The effectiveness of a certain nanosilica dosage addition into lower strength mixes was more noticeable, while, for the higher strength mix, the effectiveness was less.
American Psychological Association (APA)
Torabian Isfahani, Forood& Redaelli, Elena& Lollini, Federica& Li, Weiwen& Bertolini, Luca. 2016. Effects of Nanosilica on Compressive Strength and Durability Properties of Concrete with Different Water to Binder Ratios. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-16.
https://search.emarefa.net/detail/BIM-1096439
Modern Language Association (MLA)
Torabian Isfahani, Forood…[et al.]. Effects of Nanosilica on Compressive Strength and Durability Properties of Concrete with Different Water to Binder Ratios. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-16.
https://search.emarefa.net/detail/BIM-1096439
American Medical Association (AMA)
Torabian Isfahani, Forood& Redaelli, Elena& Lollini, Federica& Li, Weiwen& Bertolini, Luca. Effects of Nanosilica on Compressive Strength and Durability Properties of Concrete with Different Water to Binder Ratios. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-16.
https://search.emarefa.net/detail/BIM-1096439
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096439