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A platform for research: civil engineering, architecture and urbanism
Effects of Air Intrusion Technique on Permeability of Liquefiable Soil
Earthquakes are one of the most devastating natural disasters, which may lead to infrastructural damages like slope failure, ground subsidence, and liquefaction of soils. As soil liquefaction causes soil to lose its ability to support structures rested upon it, several ground improvement techniques were devised in the past to minimize its repercussions. The present study highlights a novel technique of intruding air into a saturated liquefiable soil to change its permeability. This air intrusion is achieved by mixing oxygen-generating eco-friendly chemical, i.e., sodium percarbonate in definite proportion by weight to alter the degree of saturation thereby reducing permeability. This experimental study using conventional constant head permeability test setup accentuated that mixing of 1% of sodium percarbonate can reduce soil permeability by about 90% and consequently improve liquefaction resistance. The test findings also substantiated that oxygen bubbles so formed in admixed samples were stable under a given head for a considerable time.
Effects of Air Intrusion Technique on Permeability of Liquefiable Soil
Earthquakes are one of the most devastating natural disasters, which may lead to infrastructural damages like slope failure, ground subsidence, and liquefaction of soils. As soil liquefaction causes soil to lose its ability to support structures rested upon it, several ground improvement techniques were devised in the past to minimize its repercussions. The present study highlights a novel technique of intruding air into a saturated liquefiable soil to change its permeability. This air intrusion is achieved by mixing oxygen-generating eco-friendly chemical, i.e., sodium percarbonate in definite proportion by weight to alter the degree of saturation thereby reducing permeability. This experimental study using conventional constant head permeability test setup accentuated that mixing of 1% of sodium percarbonate can reduce soil permeability by about 90% and consequently improve liquefaction resistance. The test findings also substantiated that oxygen bubbles so formed in admixed samples were stable under a given head for a considerable time.
Effects of Air Intrusion Technique on Permeability of Liquefiable Soil
Lecture Notes in Civil Engineering
Sitharam, T. G. (editor) / Kolathayar, Sreevalsa (editor) / Jakka, Ravi (editor) / Bhanwar, Punit (author) / Thakur, Shivam (author) / Dave, Trudeep N. (author)
2022-01-04
9 pages
Article/Chapter (Book)
Electronic Resource
English
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