FraMCoS 7 2010 Jeju, South Korea

Can microsilica improve concrete in terms of fatigue behavior

Cement-based composites display several attractive characteristics for application in civil struc- tures like bridges, concrete pavements, cooling and wind tower buildings and also for strengthening existing structures. This paper introduces values of the basic mechanical parameters of concrete for prestressed…

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Year 2010
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Abstract

Cement-based composites display several attractive characteristics for application in civil struc- tures like bridges, concrete pavements, cooling and wind tower buildings and also for strengthening existing structures. This paper introduces values of the basic mechanical parameters of concrete for prestressed ele- ments prepared as new potential material for bridge elements developed by ZPSV, a.s. a company producing bridge structures. The concrete mixtures have the same composition and the main differential lies in using mi- crosilica admixture. To this aim specimens were prepared and tested under static (compressive strength and modulus of elasticity) and cyclic loading (fatigue parameters Wöhler curve). The experimentally obtained re- sults (both mechanical and fatigue) of both concretes for prestressed elements are compared and the suitability of these types of composites for its application is discussed.