Occasionally one sees hints that plastics may eventually oust portland cement concrete in construction. Is this really feasible?
At the moment plastics, and chiefly the thermosetting (permanently hardening under the action of heat) resins, serve only as valuable aids in concrete construction, for example as adhesives or in toppings. Waterstops of polyvinylchloride (PVC) are an example of the auxiliary function of the thermoplastics (those showing an unlimited ability to be remoulded under the action of heat). As far as can be seen, and unless there should be unlikely and radical changes in the existing methods of producing plastics, there is no danger of plastics ever ousting present-day concrete before supplies of raw materials for portland cement production are exhausted.