Epoxy resins: Hardening at the push of a button

A new epoxy resin has been developed at TU Wien (Vienna). When any part of it is irradiated with light, the entire resin begins to solidify and takes on a dark colour. This even works underwater. This means that the new epoxy resin can be used for jobs that, up until now, had been very difficult to carry out, such as filling underwater cracks in bridge pillars or dams, or repairing pipes during ongoing operation.