Effect of Nano-CaCO3 on the Mechanical Properties and Durability of Concrete Incorporating Fly Ash
Joint Authors
Sun, Yanqun
Zhang, Peng
Guo, Weina
Bao, Jiuwen
Qu, Chengping
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-04-09
Country of Publication
Egypt
No. of Pages
10
Abstract EN
Concrete mixtures consisting of nanomaterials and fly ash have been shown to be effective for improving the performance of concrete.
This study investigates the combined effects of nano-CaCO3 and fly ash on the mechanical properties and durability of concrete; the mix proportion is optimized through orthogonal experiments.
In the first phase, nine concrete mixtures were prepared with three water-to-binder ratios (0.4, 0.5, and 0.6), three fly ash contents (15%, 20%, and 25% replacement of the cement weight), and three nano-CaCO3 contents (1%, 2%, and 3% replacement of the cement weight).
Based on the orthogonal analysis, the optimal concrete mix proportion was determined as a water-to-binder ratio of 0.4, 20% fly ash, and 1% nano-CaCO3.
In the second phase, further investigations were carried out to examine the superiority of the optimal concrete and evaluate the synergistic effect of nano-CaCO3 and fly ash.
The results showed that nano-CaCO3 contributed to increasing the compressive strength of fly ash concrete at the early ages, but its effect was quite limited at later ages.
Furthermore, the scanning electron microscopy analysis revealed that the seeding effect, filling effect, and pozzolanic effect were the primary mechanisms for the improvement of concrete performance.
American Psychological Association (APA)
Sun, Yanqun& Zhang, Peng& Guo, Weina& Bao, Jiuwen& Qu, Chengping. 2020. Effect of Nano-CaCO3 on the Mechanical Properties and Durability of Concrete Incorporating Fly Ash. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1129075
Modern Language Association (MLA)
Sun, Yanqun…[et al.]. Effect of Nano-CaCO3 on the Mechanical Properties and Durability of Concrete Incorporating Fly Ash. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-10.
https://search.emarefa.net/detail/BIM-1129075
American Medical Association (AMA)
Sun, Yanqun& Zhang, Peng& Guo, Weina& Bao, Jiuwen& Qu, Chengping. Effect of Nano-CaCO3 on the Mechanical Properties and Durability of Concrete Incorporating Fly Ash. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-10.
https://search.emarefa.net/detail/BIM-1129075
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1129075