Abstract: A settable composition comprising (i) a cementitious component comprising at least 25% of calcium aluminate of which at least 40% is calcium monoaluminate said cementitious component optionally containing one or more particulate fillers but containing less than 10% by weight of calcium sulphate, the % being by weight being based on the weight of the cementitious component and (ii) an aqueous emulsion of an organic polymer, the amount of (ii) in relation to (i) being such as to provide a weight ratio of polymer solids to weight of (i) of from 0.5:1 to 10:1, preferably 0.6:1 to 2.5:1 or (iii) a dispersible organic polymer and where the amount of dispersible polymer is such as to give a weight ratio of polymer to weight of (i) of from 0.5:1 to 10:1, preferably 0.6:1 to 2.5:1. The cementitious component (i) preferably contains an amount of fiber effective to improve the tensile strength of coatings obtained from the settable composition but not exceeding 5% by weight of the cementitious component (i).

Abstract: A cross-linkable polyester resin composition for use with a reinforcing element for reinforcing rock and other structures, comprises: (a) from 10 to 45% of a cross-linkable unsaturated polyester resin, (b) from 40 to 90% of a filter and (c) from 1 to 15% of an ethylenically unsaturated monomer copolymerizable with the polyester, the percentages being by weight based on the total weight of (a), (b) and (c), the composition being solid but permitting insertion and rotation of a reinforcing element to cause mixing of the composition with a cross-linking catalyst to form a hard mass. Composition will cold cure when mixed with catalyst preferably the monomer has higher flash point than styrene. Advantage of the solid composition is that it does not need to be enclosed within frangible sheath as in the prior art.