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Mechanical Properties and Microscopic Mechanism of Coral Sand-Cement Mortar
Joint Authors
Wang, Luoxin
Mei, Junshuai
Wu, Jing
He, Xingyang
Li, Hainan
Ding, Qingjun
Source
Advances in Materials Science and Engineering
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-24
Country of Publication
Egypt
No. of Pages
11
Abstract EN
The workability and mechanical performance of coral sand-cement mortar (coral mortar, for short) and the modification effects of mineral admixtures on the coral mortar were studied in this paper.
The results showed that the strength of coral mortar was lower than that of standard mortar, but the strength of coral mortar was improved by compositing with the mineral admixture, which can be attributed to the improvement of the microstructure and interface transition area.
Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) were used to explore the microscopic mechanism involved in the mechanical properties, volume stability, and hydration of mortar.
The analyses revealed that the internal curing effect of coral sand improved the mechanical properties of mortar and its ability to resist shrinkage.
The uneven surface of coral sand formed a meshing state of close combination with the hardened cement mortar, which helped to improve the volume stability of mortar.
The Ca2+ and Mg2+ ions from coral sand participated in the hydration reaction of cement, which contributed to generating more hydration products.
Moreover, the microaggregate filling and pozzolanic effects of fly ash and slag improved the mechanical properties of coral mortar and resistance to chloride ion diffusion.
American Psychological Association (APA)
Wang, Luoxin& Mei, Junshuai& Wu, Jing& He, Xingyang& Li, Hainan& Ding, Qingjun. 2020. Mechanical Properties and Microscopic Mechanism of Coral Sand-Cement Mortar. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1128476
Modern Language Association (MLA)
Wang, Luoxin…[et al.]. Mechanical Properties and Microscopic Mechanism of Coral Sand-Cement Mortar. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1128476
American Medical Association (AMA)
Wang, Luoxin& Mei, Junshuai& Wu, Jing& He, Xingyang& Li, Hainan& Ding, Qingjun. Mechanical Properties and Microscopic Mechanism of Coral Sand-Cement Mortar. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1128476
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1128476