Gypsum-free cements as binders of suspensions for injections

The affinity of chosen organic pollutants present in polluted natural grave ls and soils to gypsum-free cement and its hydrates was tested. The organic hydrophobic pollutants are emulsified and bound to the rapidly created sol id structure of the binder because of the favourable action of the combined additive. It seems that the suspensions based on gypsum-free cements with suitable additives, because of their very good fluidity and affinity to pol lutants tested, can be used for elimination of pollutants migration in stra ta of permeable gravels. (C) 1999 Elsevier Science Ltd. All rights reserved .