Fast-setting cements from solid phosphorus pentoxide containing materials

摘要

A dry blend capable of forming a fast-setting cement when reacted with an aqueous component. The blend comprises: a solid phosphorus pentoxide (P2O5) containing component; a solid component comprising a magnesium containing compound; and an optional aggregate. The solid P2O5 containing component is preferably spent solid phosphoric acid catalyst. The dry blend remains a free flowing powder until contacted with the aqueous component, preferably water, then a reaction occurs forming a fast-setting cement.