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<p>Geopolymerized soil process as a geotechnical solution to improve ground geomechanical properties in civil engineering constructions. In this note, a series of experimental tests on the effect of water content and curing methods as well as molarity of alkaline activator solution are conducted systematically to obtain an optimal preparation condition for unconfined compressive strength. Three water contents (35%, 40% and 45%), three geopolymer molarities (10&#xa0;M, 12&#xa0;M, and 14&#xa0;M), two curing temperatures for fourteen days (constant oven temperature: 45&#xa0;°C and the room temperature) were examined; in addition, a geopolymer-to-soil ratio of 0.2 was set. The results showed molarity, water content played a key role on the maximum strength of unconfined compressive and the curing methods had considerable influence on the strength of soil. The high molarity of 10&#xa0;M compared to the design objective led to significantly enhanced strength. The oven curing strength increased as large as 102% over the room temperature curing at the water content of 35% and about 265%, through room cure. Moreover, a similar trend has been found for all conditions with all the treatments reaching their strength values upon 7 days of oven curing, which was about 56% higher than room curing at 14&#xa0;M.</p>

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Laboratory Study of Gypsiferous Soil Treated with Geopolymer for Deep Mixing

  • 期刊论文

  • 发表日期：

    2026年2月13日

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  • Tanya Ekram Mahmood,
  • Majid Hamed,
  • Ali Kadhim Ibrahim

摘要

Geopolymerized soil process as a geotechnical solution to improve ground geomechanical properties in civil engineering constructions. In this note, a series of experimental tests on the effect of water content and curing methods as well as molarity of alkaline activator solution are conducted systematically to obtain an optimal preparation condition for unconfined compressive strength. Three water contents (35%, 40% and 45%), three geopolymer molarities (10 M, 12 M, and 14 M), two curing temperatures for fourteen days (constant oven temperature: 45 °C and the room temperature) were examined; in addition, a geopolymer-to-soil ratio of 0.2 was set. The results showed molarity, water content played a key role on the maximum strength of unconfined compressive and the curing methods had considerable influence on the strength of soil. The high molarity of 10 M compared to the design objective led to significantly enhanced strength. The oven curing strength increased as large as 102% over the room temperature curing at the water content of 35% and about 265%, through room cure. Moreover, a similar trend has been found for all conditions with all the treatments reaching their strength values upon 7 days of oven curing, which was about 56% higher than room curing at 14 M.