The continuing development of High Strength Concrete and, more importantly, High Performance Conrete and their application in practice in many countries stimulated the PIP and CEB to set up a new Joint Working Group in 1992 with the remit to monitor this activity and to report on different facets of it from time to time.

The primary initial task was to collect reliable information from projects, completed and in progress, to disseminate it in various ways and to base further work on this sound factual study. Tuis report deals with this stage and should aid the appreciation of the capability of modern concrete structures to be designed and constructed to give 'High Performance' in terms of the client's requirements.