Lightweight and dimensionally accurate resin concrete molded products, and a method of making the same.

摘要

A lightweight and highly dimensionally accurate molded resin concrete product essentially comprises an intermediate layer (4a) composed of resin concrete having a resin content of about 10 to 70%, and a thickness which is not greater than 20/1,000 of its maximum length, and a pair of reinforcing layers (3a, 5a) composed of a fiber reinforced plastics material, and between which the resin concrete layer is sandwiched. The product having a very small wall thickness, and high hot water resistance is particularly useful as a bathtub, or the like. A method of making such a molded resin concrete product is also disclosed in which the intermediate layer (4a) is cured after solidification and shrinkage of the reinforcing layers (3a, 5a).