Advances in High Strength Concrete,by Will Hansen, Univ of Michigan, Civil Engineering, Dep, Ann Arbor, MI, USA,
Abstract: The technology for producing field placeable concrete with a 28 day compressive strength of 10,000 psi has been available for many years. With the recent use of microsilica as an additive a new generation of high (up to 11,000 psi) and ultra high (above 11,000 psi) strength concretes have been produced using conventional materials and techniques. Due to the increased cost and limited supply of microsilica, concretes containing microsilica will mainly be used in high performance concrete structures such as columns in high rise buildings, prestressed concrete and long span bridges. The present paper discusses a new approach to understanding failure mode and load deformation behavior of high strength concrete. It also touches on methods of making high strength concrete with and without microsilica.
Subject Headings: High-strength concrete | Compressive strength | Concrete admixtures | Concrete bridges | Concrete columns | High-performance concrete | People movers
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