Macroscopic and Microscopic Mechanisms of Cement-Stabilized Soft Clay Mixed with Seawater by Adding Ultrafine Silica Fume
The strength of the cement-stabilized soil can be improved by the use of seawater. Compressive strength test results show that the strength of cement-stabilized soil mixed with seawater is 50% greater than that mixed with freshwater at the 90th day. However, the application is limited because the ex...
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Wiley
2014-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/810652 |
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| author | Qiang Li Jie Chen Qian Shi Shihao Zhao |
| author_facet | Qiang Li Jie Chen Qian Shi Shihao Zhao |
| author_sort | Qiang Li |
| collection | DOAJ |
| description | The strength of the cement-stabilized soil can be improved by the use of seawater. Compressive strength test results show that the strength of cement-stabilized soil mixed with seawater is 50% greater than that mixed with freshwater at the 90th day. However, the application is limited because the expansion of the cement-stabilized soil mixed with seawater increases significantly. A kind of ultrafine silica fume was added into the cement-stabilized soil to inhibit swelling of the cement-stabilized soil with seawater. The expansion of cement-stabilized soil mixed with seawater by adding ultrafine silica fume is close to that of cement-stabilized soil mixed with freshwater. With the addition of ultrafine silica fume, the unconfined compressive strength increases by close to 6.5% compared with seawater alone at the 90th day. The mechanisms of adding ultrafine silica fume into the cement-stabilized soil mixed with seawater are revealed by several physical and chemical characterization parameters, such as specific gravity, unbound water content, surface morphology seen with SEM, and crystal products by X-ray diffraction tests. The results show that the crystal growth is an important factor, affecting the strength and expansion of cement-stabilized soil mixed with seawater. |
| format | Article |
| id | doaj-art-9f86033bcf494bf781d4a6d651b2f639 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
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| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-9f86033bcf494bf781d4a6d651b2f6392025-02-03T06:10:57ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422014-01-01201410.1155/2014/810652810652Macroscopic and Microscopic Mechanisms of Cement-Stabilized Soft Clay Mixed with Seawater by Adding Ultrafine Silica FumeQiang Li0Jie Chen1Qian Shi2Shihao Zhao3Department of Civil Engineering, Zhejiang Ocean University, No. 1, South Haida Road, Changzhi Island, Lincheng Avenue, Dinghai District, Zhoushan, Zhejiang 316022, ChinaDepartment of Civil Engineering, Zhejiang Ocean University, No. 1, South Haida Road, Changzhi Island, Lincheng Avenue, Dinghai District, Zhoushan, Zhejiang 316022, ChinaDepartment of Civil Engineering, Zhejiang Ocean University, No. 1, South Haida Road, Changzhi Island, Lincheng Avenue, Dinghai District, Zhoushan, Zhejiang 316022, ChinaDepartment of Civil Engineering, Zhejiang Ocean University, No. 1, South Haida Road, Changzhi Island, Lincheng Avenue, Dinghai District, Zhoushan, Zhejiang 316022, ChinaThe strength of the cement-stabilized soil can be improved by the use of seawater. Compressive strength test results show that the strength of cement-stabilized soil mixed with seawater is 50% greater than that mixed with freshwater at the 90th day. However, the application is limited because the expansion of the cement-stabilized soil mixed with seawater increases significantly. A kind of ultrafine silica fume was added into the cement-stabilized soil to inhibit swelling of the cement-stabilized soil with seawater. The expansion of cement-stabilized soil mixed with seawater by adding ultrafine silica fume is close to that of cement-stabilized soil mixed with freshwater. With the addition of ultrafine silica fume, the unconfined compressive strength increases by close to 6.5% compared with seawater alone at the 90th day. The mechanisms of adding ultrafine silica fume into the cement-stabilized soil mixed with seawater are revealed by several physical and chemical characterization parameters, such as specific gravity, unbound water content, surface morphology seen with SEM, and crystal products by X-ray diffraction tests. The results show that the crystal growth is an important factor, affecting the strength and expansion of cement-stabilized soil mixed with seawater.http://dx.doi.org/10.1155/2014/810652 |
| spellingShingle | Qiang Li Jie Chen Qian Shi Shihao Zhao Macroscopic and Microscopic Mechanisms of Cement-Stabilized Soft Clay Mixed with Seawater by Adding Ultrafine Silica Fume Advances in Materials Science and Engineering |
| title | Macroscopic and Microscopic Mechanisms of Cement-Stabilized Soft Clay Mixed with Seawater by Adding Ultrafine Silica Fume |
| title_full | Macroscopic and Microscopic Mechanisms of Cement-Stabilized Soft Clay Mixed with Seawater by Adding Ultrafine Silica Fume |
| title_fullStr | Macroscopic and Microscopic Mechanisms of Cement-Stabilized Soft Clay Mixed with Seawater by Adding Ultrafine Silica Fume |
| title_full_unstemmed | Macroscopic and Microscopic Mechanisms of Cement-Stabilized Soft Clay Mixed with Seawater by Adding Ultrafine Silica Fume |
| title_short | Macroscopic and Microscopic Mechanisms of Cement-Stabilized Soft Clay Mixed with Seawater by Adding Ultrafine Silica Fume |
| title_sort | macroscopic and microscopic mechanisms of cement stabilized soft clay mixed with seawater by adding ultrafine silica fume |
| url | http://dx.doi.org/10.1155/2014/810652 |
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