Prestressed concrete reactor vessel for the HHT-670 MW(e) demonstration plant. Pt.3. Experimental studies on the behaviour of concrete and liner at high temperature

In connection with the HHT PROJECT (Helium High Temperature Reactor), jointly developed in Germany and Switzerland, an extensive test programme is presently being conducted at the Swiss Federal Institute of Technology in Lausanne in order to gain more experimental information about the rheological and technological problems of Prestressed Concrete Reactor Vessels with warm liner. This programme, executed in close collaboration with Bonnard and Gardel, Consulting Engineers Ltd, consists of, at this stage, three essential parts, namely: 1. Tests on the behaviour of the hot concrete layer; 2. Tests on the behaviour of the anchorages; 3. Tests on the behaviour of the liner. In the following text, some details of this test programme are presented