ABSTRACT
Radical Concrete Technology. Edited by R K Dhir and P C Hewlett. Published in 1996 by E & FN Spon, 2-6 Boundary Row, London SE1 8HN, UK. ISBN 0 419 21480 1. ABSTRACT. Over the past 20 years, high-strength concrete has come into widespread use throughout most of the world. This paper reviews the techniques that have been developed to improve the fluidity of high-strength concrete, and demonstrates that these fluidity-improving methods have contributed greatly to the popularity of high-strength concrete. The fluidity-improving techniques emphasized in this paper are: superplasticizers, long-life superplasticizers, silica fume, and super-superplasticizers. An outline of each technique is given here, together with examples of their application. Since they are prerequisites to understand these methods, pre-superplasticizer high-strength concrete technology and the rheological characteristics of high-strength concrete made with superplasticizers are reviewed. Keywords: High-strength concrete, Superplasticizer (SP), Long-life superplasticizer (LSP), Silica fume (SF), Super-superplasticizer (S-SP), Fluidity, Viscosity Dr Toshio Yonezawa is a Chief Researcher, Research and Development Institute, Takenaka Corporation, Chiba, Japan. He specializes in the corrosion of steel reinforcement, pore solution chemistry, light-weight aggregate concrete and high-strength concrete. He is also a member of the committees for the Japan Concrete Institute, the Japan Society of Civil Engineers, and the Architectural Institute of Japan.
