EFFECT OF CHANGE IN THE COEFFICIENT OF PERMEABILITY ON CONSOLIDATION CHARACTERISTICS OF CLAYS

The settlement rate and pore water pressure dissipation are mainly controlled by the permeability of soil. Both laboratory field tests show that is varied during loading consolidation process. It known process accompanied decrease in void ratio which leads to coefficient permeability. importance on time needs be investigated.This paper takes into account change studies its effect characteristics a clay layer. finite element method used analysis package Geo-Slope adopted through coupling programs SIGMA/W SEEP/W. relationship between applied was determined experimentally for three samples.It concluded clear at later times due hence slower pressure. Taking variable longer consolidation. At (after 400 days), excess predicted case greater thanconventional about (10 – 12) %.