Field Loading Tests on Muskeg

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Abstract
Results of tests performed using a 1.8-m (6-ft) diameter flexible based tank capable of being filled with 3.6 m (12 ft) of water are presented. Two series of tests were performed on a muskeg with an undrained shear strength of 5–7.5 kN/m2 (100–150 lb/sq.ft). The first consisted of filling the tank alone and the second with the tank positioned at the center of a 4.5-m (15-ft) diameter 0.6 m (2 ft) high flexible based reservoir. The results thus simulate the comparison of the effect of berms on the stability of embankments. Consideration is given to the short term effect of berms where they are constructed rapidly at the same time as the central fill and the long term effect where they and the central fill are constructed slowly.The resulting vertical movements were measured using a torpedo settlement gauge. The horizontal movements were measured using an inclinometer as well as a horizontal movement device. The pore pressures were measured using fine stoned piezometers.In addition suitable laboratory tests were conducted to compare predicted and measured results.

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