Strength and Pore Structure Development of High-Plasticity Clay Treated with MK-Blended Cement
Joint Authors
Guo, Qian
Wei, Mingli
Xue, Haochen
Gao, Changhui
Du, Guangyin
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-08-15
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
This paper focuses on the strength development and pore structure evolution of high-plasticity clay mixtures treated with metakaolin- (MK-) blended ordinary Portland cement (OPC).
The unconfined compressive strength (fcu) of treated soil mixtures is measured to study the effect of MK replacement.
The microstructural study is carried out by mercury intrusion porosimetry (MIP), scanning electron microscopy (SEM), and X-ray diffraction (XRD).
The results showed that the MK replacement led to the decrease of unconfined compressive strength of OPC-treated soil mixture cured for 28 days, but the influence on 7 days strength was negligible.
However, the MK addition also enhanced the unconfined compressive strength significantly.
The MK addition provided more cementitious products by secondary hydration and pozzolanic reaction, which would give rise to a notable filling effect by turning the large pores (1 to 10 μm) into smaller ones (0.1 to 1 μm).
However, the MK replacement led to a decrease of cementitious products due to the lack of calcium hydroxide (CH) in soil mixture, and thus the effect on pore structure refinement was reduced.
Nevertheless, the presence of MK enhanced the unconfined compressive strength cured for 7 days, due to the high reactivity of MK with CH.
American Psychological Association (APA)
Guo, Qian& Wei, Mingli& Xue, Haochen& Gao, Changhui& Du, Guangyin. 2019. Strength and Pore Structure Development of High-Plasticity Clay Treated with MK-Blended Cement. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1115800
Modern Language Association (MLA)
Guo, Qian…[et al.]. Strength and Pore Structure Development of High-Plasticity Clay Treated with MK-Blended Cement. Advances in Civil Engineering No. 2019 (2019), pp.1-8.
https://search.emarefa.net/detail/BIM-1115800
American Medical Association (AMA)
Guo, Qian& Wei, Mingli& Xue, Haochen& Gao, Changhui& Du, Guangyin. Strength and Pore Structure Development of High-Plasticity Clay Treated with MK-Blended Cement. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-8.
https://search.emarefa.net/detail/BIM-1115800
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115800