Why glazed concrete? Concrete hardens and finds its strength at room temperature whereas clay products must first be fired before they achieve this strength. They are stronger and three times as durable as clay products, which is a weighty reason for choosing concrete.5 Another reason, which is the one that I am working with, is the assumption that with the use of the packing theory Densit6 and a fracture mechanical design concept for composite materials, Compact Reinforced Composite (CRC)7, 8 can achieve high strength, which even for large-scale construction have high ductility. If this succeeds, it will be possible to manufacture thin, large-scale glazed concrete panels comparable in size to concrete sandwich construction and larger which, with or without back-casting, can work as load-bearing construction elements.