The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries
This study investigated the unconfined compressive strength change law of cement modified slurries (CMS) under different curing ages. We conducted unconfined compressive strength tests using slurry and cement as raw materials. The cement contents were 5%, 10%, 15%, 20%, and 25%. The curing ages were...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/5597275 |
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| author | Ping Jiang Yewen Chen Lin Zhou Tianhao Mao Wei Wang Junping Yuan Na Li |
| author_facet | Ping Jiang Yewen Chen Lin Zhou Tianhao Mao Wei Wang Junping Yuan Na Li |
| author_sort | Ping Jiang |
| collection | DOAJ |
| description | This study investigated the unconfined compressive strength change law of cement modified slurries (CMS) under different curing ages. We conducted unconfined compressive strength tests using slurry and cement as raw materials. The cement contents were 5%, 10%, 15%, 20%, and 25%. The curing ages were 7, 14, 28, 56, 90, 120, 150, and 180 d. A time effect model of CMS strength was established based on the measured UCS strength-curing age and the strength-cement content curves. The test results proved that the UCS of the CMS increased significantly with an increase in the curing age, and after 90 days, the UCS gradually increased to a fixed value. The time effect model better characterized the relationship between the UCS of the CMS and the curing age and the cement content, as the predicted value had a high correlation with the measured value. We conducted scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and X-ray diffraction (XRD) tests to analyze the microstructure and chemical composition of the CMS. The microscopic test results demonstrated that the increase of cement content and curing age increased the amount of gelling substances in the CMS and made the overall structure more compact, thereby increasing its macro strength. |
| format | Article |
| id | doaj-art-597fe90b5cb6458b96229ad3fd0f78cf |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-597fe90b5cb6458b96229ad3fd0f78cf2025-02-03T01:28:28ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422021-01-01202110.1155/2021/55972755597275The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified SlurriesPing Jiang0Yewen Chen1Lin Zhou2Tianhao Mao3Wei Wang4Junping Yuan5Na Li6School of Civil Engineering, Shaoxing University, Shaoxing 312000, ChinaSchool of Civil Engineering, Shaoxing University, Shaoxing 312000, ChinaSchool of Civil Engineering, Shaoxing University, Shaoxing 312000, ChinaSchool of Civil Engineering, Shaoxing University, Shaoxing 312000, ChinaSchool of Civil Engineering, Shaoxing University, Shaoxing 312000, ChinaKey Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, ChinaSchool of Civil Engineering, Shaoxing University, Shaoxing 312000, ChinaThis study investigated the unconfined compressive strength change law of cement modified slurries (CMS) under different curing ages. We conducted unconfined compressive strength tests using slurry and cement as raw materials. The cement contents were 5%, 10%, 15%, 20%, and 25%. The curing ages were 7, 14, 28, 56, 90, 120, 150, and 180 d. A time effect model of CMS strength was established based on the measured UCS strength-curing age and the strength-cement content curves. The test results proved that the UCS of the CMS increased significantly with an increase in the curing age, and after 90 days, the UCS gradually increased to a fixed value. The time effect model better characterized the relationship between the UCS of the CMS and the curing age and the cement content, as the predicted value had a high correlation with the measured value. We conducted scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and X-ray diffraction (XRD) tests to analyze the microstructure and chemical composition of the CMS. The microscopic test results demonstrated that the increase of cement content and curing age increased the amount of gelling substances in the CMS and made the overall structure more compact, thereby increasing its macro strength.http://dx.doi.org/10.1155/2021/5597275 |
| spellingShingle | Ping Jiang Yewen Chen Lin Zhou Tianhao Mao Wei Wang Junping Yuan Na Li The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries Advances in Materials Science and Engineering |
| title | The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries |
| title_full | The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries |
| title_fullStr | The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries |
| title_full_unstemmed | The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries |
| title_short | The Time Effect and Micromechanism of the Unconfined Compressive Strength of Cement Modified Slurries |
| title_sort | time effect and micromechanism of the unconfined compressive strength of cement modified slurries |
| url | http://dx.doi.org/10.1155/2021/5597275 |
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