Developments and applications of high-performance concrete

Abstract

In High Performance Concrete structures, both the increased strength as well as the improved microstructure can be utilized. Both effects are achieved using an optimized concrete technology, namely an extremely low w/c-ratio and the addition of silica fume. In the case of High Performance Concrete, reinforcement can be minimized and/or the dimensions of the structural members can be reduced. This type of concrete is mainly used for columns, walls, etc. within high-rise buildings, as an alternative to steel structures. However, in comparison with normal reinforced concrete structures, some additional measures are necessary to obtain an adequate fire resistance. Some interesting applications for high-rise buildings in Germany are presented. The dense microstructure of HPC is mainly used in case where, because of chemical attack or abrasion, additional protective measures are necessary in normal concrete structures. These measures can be avoided by using such a concrete.