A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Recycled-Seashells Cement Stabilised Kaolinite Clay Exposed to Sulphate
Sulphate attack is one of the key issues in geotechnical engineering. This study aims to investigate the efficacy of the seashell to reduce negative impacts of the magnesium sulphate concentration on the cement stabilised clayey mixtures by performing a series of unconfined compressive strength (UCS) tests. Three percentage of cement (3, 5, and 7%) were utilised in this study. Also, the benchmark and exposed specimens were cured for 7, 14, and 28 days before testing and exposure respectively. A series of the compaction tests were conducted and the optimum moisture content (OMC) and maximum dry density (MDD) values were achieved. In the next stage, the UCS tests were performed on the specimens containing 10, 20, or 30% seashell contents and the specimens were exposed to sulphate concentration. Scanning electorn microscope morphology had indicated that seashells are suitable replacement of cement. Qualitative X-ray diffraction had shown that presence of magnesium sulphate reduces the formation of calcium silicate hydrated that causes durability issues in cement stabilized soils. The results indicated that seashell is effective to improve the sulphate resistance of cement stabilised soil.
Recycled-Seashells Cement Stabilised Kaolinite Clay Exposed to Sulphate
Sulphate attack is one of the key issues in geotechnical engineering. This study aims to investigate the efficacy of the seashell to reduce negative impacts of the magnesium sulphate concentration on the cement stabilised clayey mixtures by performing a series of unconfined compressive strength (UCS) tests. Three percentage of cement (3, 5, and 7%) were utilised in this study. Also, the benchmark and exposed specimens were cured for 7, 14, and 28 days before testing and exposure respectively. A series of the compaction tests were conducted and the optimum moisture content (OMC) and maximum dry density (MDD) values were achieved. In the next stage, the UCS tests were performed on the specimens containing 10, 20, or 30% seashell contents and the specimens were exposed to sulphate concentration. Scanning electorn microscope morphology had indicated that seashells are suitable replacement of cement. Qualitative X-ray diffraction had shown that presence of magnesium sulphate reduces the formation of calcium silicate hydrated that causes durability issues in cement stabilized soils. The results indicated that seashell is effective to improve the sulphate resistance of cement stabilised soil.
Recycled-Seashells Cement Stabilised Kaolinite Clay Exposed to Sulphate
Environ Sci Eng
Chegenizadeh, Amin (editor) / Nikraz, Hamid (editor) / Chegenizadeh, A. (author) / Keramatikerman, M. (author) / Afzal, F. (author) / Nikraz, H. (author) / Lau, C. K. (author)
2022-02-28
18 pages
Article/Chapter (Book)
Electronic Resource
English
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