Properties of Hydraulically Dumped Coal Ash after Soil Mixing Improvement

Liao, Hung‐Jiun; Cheng, Shao-Hsian; Quo, L.W.; Wong, Ricky K.N.; Chien, P. Y.

doi:10.1061/9780784412350.0114

Cited by 2 publications

(1 citation statement)

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“…During the electrolysis process, the resistance of the electrodes remains essentially unchanged, while the resistance of the foundation between the electrodes increases because of the reduction in saturation, so the variation patterns of the equivalent resistance also reflect the evolution of the saturation in the foundation, and the equivalent resistance can also be taken as an effective parameter to measure D r a f t the overall saturation of the foundation. Conventional foundation treatment methods are usually more expensive than the desaturation methods, the cost of sand compaction piles is about USD 35/m 3 (Liao et al 2012), while the cost of electrolysis desaturation method in this study is only about USD 5/m 3 . The electrolysis desaturation method offers economic advantages in repeated foundation treatments.…”

Section: Electricity Consumption Under Different Test Conditionsmentioning

confidence: 85%

In situ desaturation tests by electrolysis for liquefaction mitigation

Chen

Liu

et al. 2021

Can. Geotech. J.

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Electrolytic desaturation is a potential method for improving the liquefaction resistance of the liquefiable foundation by reducing the soil saturation. In this study, in-situ desaturation tests were performed to investigate the resistivity of soil at different depth and the water level of the foundation under different current. The test results show that at constant currents of 1 A (Ampere, unit of the direct current), 2 A and 3 A, the saturation of the treated foundation reached 87%, 83% and 80%. During the electrolysis process, the generated gas migrates vertically and horizontally under the influence of buoyancy and gas pressure. In the end of electrolysis, the gas inside the sand foundation basically migrates vertically only. The higher current intensity employed for electrolysis will affect the uniformity and stability of the gas. At constant currents of 1 A, 2 A and 3 A, the difference between the maximum and minimum degree of saturation in the treated foundation was 14%, 18% and 19%; and after electrolysis halted for 144 h, the saturation in the treated foundation was 90%, 85% and 87%. The electricity consumption analysis indicates that the desaturation method has excellent economic benefits in the treatment of saturated sand foundations.

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Section: Electricity Consumption Under Different Test Conditionsmentioning

confidence: 85%