THE IMPROVEMENT OF GYPSUM SAND SOILS IN UNSATURATED CONDITIONS USING A MODIFIED OEDOMETER DEVICE
This work offers recommendations on the best percentages of CKD (Cement Kiln Dust) to use for soil stabilization to reduce compressibility problems 1%, 2%, 3%, 4%, and 5% for projects where gypsum sand soil is common. The results could lead to more sustainable and effective engineering methods in th...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Faculty of Engineering, University of Kufa
2025-07-01
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| Series: | Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ |
| Subjects: | |
| Online Access: | https://journal.uokufa.edu.iq/index.php/kje/article/view/15926 |
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| Summary: | This work offers recommendations on the best percentages of CKD (Cement Kiln Dust) to use for soil stabilization to reduce compressibility problems 1%, 2%, 3%, 4%, and 5% for projects where gypsum sand soil is common. The results could lead to more sustainable and effective engineering methods in these areas. 22% of the soil analyzed came from Al-Najaf City in Iraq. Each of the four groups in this work underwent six tests: the first group operated in a saturated state without the use of a High Air Entry (HAE) ceramic disc; the second group used HAE to demonstrate the differences between the two groups; the third group used a matric suction (ψ) of 20 kPA; and the fourth group used the original matric suction of 100 kPa. The findings showed that the settlements were reduced with increasing matric suction and improved with the optimal value of CKD when the CKD additive was increased and the optimum values for the saturation state, unsaturation states with zero matric suction, unsaturation tests with ψ = 20 kPa, and unsaturation tests with ψ = 100 kPa were 2.8%, 2.9%, 3%, and 2%, respectively
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| ISSN: | 2071-5528 2523-0018 |