Abstract
To meet the rapidly increasing demand in industrial growth and advancement, a sufficient boost in power generation is the must. To meet this requirement, various power plants are availing the demand of power on pan India basis. The lack of suitable land availability to develop new plants and expansion leads to the forceful construction of various parts of power plants over ash ponds/ash deposits. Fly ash contains non-cohesive silt-sized particles with fair permeability, which makes it susceptible to erosion and liquefaction if no remedial measures are taken. The difficult task of encountering the unexpected damages caused to the structures has been envisaged for an existing power plant flue gas desulphurization (FGD) project. The difficulties for structures resting over this part of ash deposit with varying depths up to 19.5 m below existing ground level have been taken into consideration by providing Rammed stone column as remedy. Similar ground improvement technique using vibro stone column was adopted in the vicinity in coal handling plant (CHP) of same project in past. For mitigating the phenomenon of liquefaction, various cost-effective technical proposals were adopted to improve engineering properties.KeywordsGround improvementFly ash aggregateRammed stone column
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