Improving the strength of marine clay using magnesium chloride
Not available
| 第一著者: | |
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| その他の著者: | |
| フォーマット: | Doctoral thesis |
| 言語: | 英語 |
| 出版事項: |
Universiti Teknologi Malaysia
2025
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| 主題: | |
| オンライン･アクセス: | https://utmik.utm.my/handle/123456789/39779 |
| Abstract | Abstract here |
| _version_ | 1854975097423527936 |
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| author | Mohammed Ridzuan Jahidin |
| author2 | Siti Norafida Jusoh, supervisor |
| author_facet | Siti Norafida Jusoh, supervisor Mohammed Ridzuan Jahidin |
| author_sort | Mohammed Ridzuan Jahidin |
| description | Not available |
| format | Doctoral thesis |
| id | utm-123456789-39779 |
| institution | Universiti Teknologi Malaysia |
| language | English |
| publishDate | 2025 |
| publisher | Universiti Teknologi Malaysia |
| record_format | dspace |
| record_pdf | Abstract |
| spelling | utm-123456789-397792025-08-21T08:26:01Z Improving the strength of marine clay using magnesium chloride Mohammed Ridzuan Jahidin Siti Norafida Jusoh, supervisor Civil engineering Not available Problems in construction on marine clay (MC) underlying the foundation are mainly related to the settlement. An improvement method such as chemical soil stabilization is needed to improve the stiffness of marine clay. Recently, Magnesium Chloride (MgCl2), a non-traditional additive is extensively being studied to overcome this problem. MgCl2 was commonly used in road pavement construction to control dust and humidity. MgCl2 is regarded as a green binder and is widely used for soil stabilization. Hence, this study aimed to determine the changes in physicochemical characteristics, microstructural behaviours, and settlement of MgCl2 treated marine clay. The marine clay samples were obtained from the West Coast Highway Package 8 project site at Teluk Intan, Perak, and a series of laboratory tests consisting of Sieve analysis test, compaction test, Unconfined compression test, California Bearing Ratio (CBR) test, SEM, XRD, and EDAX were conducted to determine the physical properties, chemical properties, engineering properties of MC, optimum mixture content, and the best curing period. The numerical modelling and physical modelling were also performed for settlement analysis. The proportions of the mixture were 2%, 4%, 6%, 8%, and 10% of MgCl2 from the dry weight of MC, and tested at 3, 7, 14, and 28 days, respectively. Based on the USCS chart, MC used in this study is categorized as MH (silt of high organic content), and the Optimum Moisture Content (OMC) and Maximum Dry Density (MDD) obtained from compaction tests are 28% and 1.15 Mg/m3, respectively. The optimum Unconfined Compressive Strength (UCS) value of treated MC was 137 kPa, an increase of 144% compared to the untreated MC. The optimum percentage of MgCl2 and best curing period are 6% MgCl2 and 7 days, respectively. From the test, with treated MC, the Direct Shear test and CBR test shown an improvement of 315% and 300%, respectively. The microstructural test indicated the formation of new products identified as Magnesium Silicate Hydrate (M-S-H) that lead to the strengthening of MC. In addition, the finding of the 2D numerical simulation is in line with the physical model test that showed the settlement reduced significantly with the increased depth of treated marine clay. In conclusion, the use of MgCl2 has improved the properties of marine clay and reduced the settlement, and can be considered as a viable stabilization method for MC. shafika UTM 167 p. Tesis (Doktor Falsafah (Kejuruteraan Awam)) - Universiti Teknologi Malaysia, 2023 2025-03-05T04:52:46Z 2025-03-05T04:52:46Z 2023 Doctoral thesis https://utmik.utm.my/handle/123456789/39779 vital:156196 valet-20240314-105325 ENG Closed Access UTM Complete Unpublished Completion application/pdf Universiti Teknologi Malaysia |
| spellingShingle | Civil engineering Mohammed Ridzuan Jahidin Improving the strength of marine clay using magnesium chloride |
| thesis_level | PhD |
| title | Improving the strength of marine clay using magnesium chloride |
| title_full | Improving the strength of marine clay using magnesium chloride |
| title_fullStr | Improving the strength of marine clay using magnesium chloride |
| title_full_unstemmed | Improving the strength of marine clay using magnesium chloride |
| title_short | Improving the strength of marine clay using magnesium chloride |
| title_sort | improving the strength of marine clay using magnesium chloride |
| topic | Civil engineering |
| url | https://utmik.utm.my/handle/123456789/39779 |
| work_keys_str_mv | AT mohammedridzuanjahidin improvingthestrengthofmarineclayusingmagnesiumchloride |