A laboratory investigation was carried out to study the effect of fines (passing 200 sieve) on liquefaction potential of isotropically consolidated Ottawa sands under cyclic triaxial loading. All specimens were statically compacted to a dry density of 1.70 g/cu cm3. The proportions of sand and fines were varied from specimen to specimen. By fixing the dry density of all specimens, the void ratio of the 'sand structure' of a specimen varies with the amount of fines. The results show that for a given void ratio of the sand structure, where sand to sand contact is possible, the presence of fines in the voids increases the resistance to liquefaction under cyclic loading. (AA)
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