high performance concrete a material with a large potential(非常好的超高性能混凝土的综述).pdf

Journal of Advanced Concrete Technology Vol. 7, No. 2, 145-156, June 2009 / Copyright © 2009 Japan Concrete Institute 145 Invited paper High Performance Concrete: a Material with a Large Potential Joost Walraven1 Received 6 May 2009, revised 30 May 2009 Abstract High Performance Concrete is a material that was regarded as “academic” for quite a number of years. Now, the profits of this material are becoming to be recognized. The high compressive strength is not the only advantage of this material. The fibers lead to small crack distances and give the material large ductility. The very dense material structure can as well result in high durability. This makes the material suitable for the design of lightweight slender structures with a long service life, as well as surprising architectural structures. On the other hand the material is appropriate for repair of structures, such as bridge decks. First applications show convincingly a large potential. At this moment an international committee (fib Task Group 8.6) works on producing an international recommendation. 1. Introduction tures was the reason that design for durability was in- troduced into the codes with the same significance as High performance fiber concrete is a material with a design for safety and serviceability. High Performance rather short history. Its introduction was relatively sud- Fiber Reinforced Concrete (HPFRC) if composed and den, if one regards the very gradual development from produced well, can have a very small permeability for conventional strength C45-C65 to high strength damaging chemicals like chlorides. Th