Samenvatting
PS hardfoam (polystyrene) is an expansive material in itself, however, this is offset by its low weight. This article compares the properties and costs of various fill materials. A table is provided to illustrate such comparisons. It appears that in a number of cases PS hardfoam offers an inexpensive solution for engineering projects involving earthworks or embankments. The validity of the arguments used in the study should be discussed.