Field Monitoring of a Fill on Peaty Clay and Its Modelling

摘要

Preconsolidation by preloading can be used to improve the Engineering properties of peat. With a highly non homogeneous material like peat it is essential to verify the laboratory findings with appropriate field studies. This paper presents an attempt to compare the improvements in primary and secondary consolidation characteristics and shear strength properties obtained through laboratory tests, with those obtained from a monitored fill. Improvements observed in the field in strength and compressibility are seen to be comparable with those achieved in the laboratory. Field consolidation due to the gradual placement of the fill was modeled using the Finite Difference method and comparisons were made with the observed Pore water Pressure and Settlements. The field rate of consolidation was found to be much faster than the laboratory rate.