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Consolidation behavior and microstructure properties of cement-treated dredged soil during the stress curing.
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- Author(s): He, Xingxing (AUTHOR); Chen, Yijun (AUTHOR); Li, Yuan (AUTHOR); Guo, Dongdong (AUTHOR); Xue, Qiang (AUTHOR); Wang, Shiquan (AUTHOR); Wang, Ping (AUTHOR); Wan, Yong (AUTHOR); Liu, Lei (AUTHOR)
- Source:
Marine Georesources & Geotechnology. Apr2022, Vol. 40 Issue 4, p500-510. 11p. - Source:
- Additional Information
- Subject Terms:
- Abstract: The curing stress can significantly improve the engineering properties of cement-treated dredged soil (CDS). Based on the large-scale consolidation tests, this study investigated the settlement pattern of CDS under the curing stress of 0–100 kPa, and the pressure dissipation and chemical properties of pore water were also explored. The results showed that the application of curing stress greatly accelerated the settlement of CDS and significantly reduced its void ratio, however, the consolidation efficiency gradually weakened with the increase of cement content. With the curing stress increasing, the completion time of primary settlement of CDS was prolonged, and the pH and EC values of the pore water both gradually increased. The void-ratio reduction of CDS during stress curing arises from the combined effect of mechanical compression and chemical filling, and the two effects have different contributions to the reduction of void ratio at different consolidation stages. Moreover, the effects of curing stress on the microstructure of CDS were also investigated by the scanning electron microscopy (SEM) and mercury intrusion porosimeter (MIP) tests. The results show that with the curing stress applied, the volume of large pore in CDS significantly decreased and the structure became denser. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Marine Georesources & Geotechnology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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