Polymer concrete compositions are made from norbornyl modified unsaturated polyesteramide compositions. The curable concrete composition contains 2 to 20 percent by weight of the polyesteramide composition and 98 to 80 percent by weight of an aggregate such as sand, gravel, silica flour, etc. The polyesteramide composition contains norbornyl modified polyesteramide, ethylenically unsaturated monomers, such as styrene with or without a vinyl reactive additive. The polyesteramide can be further modified to contain a copolymerized polyether polyol having a functionality of three or more, a copolymerized poly (2-alkyl-2-oxazoline) or a copolymerized carboxylated rubber. The vinyl reactive additive can be a vinyl ester resin or a vinyl terminated urethane oligomer. When cured, the curable concrete composition gives a polymer concrete with better tensile and compressive strength with the advantage that the composition cures under water and in the presence of moisture.