Experimental validation of a finite strain theory for gassy mud

In the Netherlands large quantities of polluted mud must be stored in large -scale disposal sites. The storage capacity of these sites and the outflow of contaminated pore water can be predicted by means of one-dimensional fin ite strain theory. By making various theoretical assumptions, a self-weight consolidation computer program for gassy sludge has been developed. These assumptions are verified by simulating a small-scale column test with bioge nic gas production. Good agreement was obtained between the measured and si mulated density profiles, excess pore pressures, and settlements. This pape r also deals with the validation of simulations with this computer program by means of field measurements from the Slufter disposal site, which is use d to store polluted mud from Rotterdam harbour. The field measurements cons ist of mud level measurements and profiles of water content, gas content, b ulk density, and pore-water pressure for two locations in the disposal site . The computer simulations are in reasonable agreement with the field data. The method described here can be used to predict the future disposal capac ity on the basis of estimates of the supply of mud and the production of ga s.