Precast High Performance Concrete

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Title: Precast High Performance Concrete

Author(s): G.G. Serra and P.E.F. de Campos

Publication: Special Publication

Volume: 207

Issue:

Appears on pages(s): 327-338

Keywords: concrete; high-performance; precast

Date: 10/7/2002

Abstract:
The Brazilian experience with precast concrete in building schools all over the country has shown the flexibility allowed by that technology. Indeed, it is a success story in many aspects, particularly in terms of efficiency answering acute social needs and repetitive programs. Now, after a number of years it is possible to evaluate its performance in terms of durability. Implicit in the design of precast elements is a strong concern for weight and in the case of light precast elements this concern is even bigger. The result is the use of very thin components with only a few millimeters of concrete over the reinforcement bars, resulting in accelerated concrete carbonation and steel oxidation. This paper reports the use of high performance concrete to build light precast concrete building elements as an answer to the mentioned problem.