Polyurethanes are produced by the reaction of a polyisocyanate with a polyalcohol (polyol) in the presence of a catalyst and other additives. Isocyanates can be classed as aromatic or aliphatic. Depending upon the type of isocyanate used in the reaction, there can be either aromatic polyurethanes or aliphatic polyurethanes. Polyaspartic is an aliphatic Polyurea. So [...]

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Polymers have been used as additives in cement mortars and concrete since the 1920s when natural rubber latex was added to road paving materials. Since then there has been considerable development of polymer modification for cement and concrete. Polymer modification of cement mortar and concrete noticeably improves application and performance characteristics. These property advancements include [...]

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