XRD-Rietveld Method for Evaluating the Leaching Characteristics of Hardened Cement Paste in Flowing Water
Joint Authors
He, Xu
Zhang, Lunchao
Zhou, Jikai
Chen, Chen
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-18
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
In order to study the leaching characteristics of hardened cement paste by flowing environmental water, indoor simulated leaching tests of Portland cement paste were carried out at different flow velocities with home-made flow field device and tap water as the erosion medium.
By means of mechanical properties tests, X-ray diffraction (XRD), and Rietveld full-spectrum quantitative analysis of specimens after leaching at different ages, the change rules of the flexural strength, main phase composition, and mass fraction of the specimens after leaching were obtained.
The results show that, within 90 days, the flow rate in the test has no obvious effect on the leaching of hardened cement paste.
With the increase in age, the leaching of hardened cement paste gets more obvious.
Rietveld full-spectrum quantitative analysis shows that the leaching of hardened cement paste changes with the relative content of CaCO3 and Ca(OH)2.
The higher the relative content of CaCO3 is, the better compaction and leaching resistance the paste has.
The leaching resistance of hardened cement paste is also related to the gradient of Ca(OH)2.
The smaller the gradient is, the better the leaching resistance is.
The Rietveld full-spectrum quantitative analysis method can be used as a method to evaluate the leaching effect of hardened cement paste.
American Psychological Association (APA)
Zhang, Lunchao& Zhou, Jikai& He, Xu& Chen, Chen. 2020. XRD-Rietveld Method for Evaluating the Leaching Characteristics of Hardened Cement Paste in Flowing Water. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1122545
Modern Language Association (MLA)
Zhang, Lunchao…[et al.]. XRD-Rietveld Method for Evaluating the Leaching Characteristics of Hardened Cement Paste in Flowing Water. Advances in Civil Engineering No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1122545
American Medical Association (AMA)
Zhang, Lunchao& Zhou, Jikai& He, Xu& Chen, Chen. XRD-Rietveld Method for Evaluating the Leaching Characteristics of Hardened Cement Paste in Flowing Water. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1122545
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122545