Can microsilica improve concrete in terms of fatigue behavior?

0354337 - ÚFM 2011 RIV KR eng C - Konferenční příspěvek (zahraniční konf.)
Seitl, Stanislav - Bílek, V. - Keršner, Z. - Řoutil, L.
Can microsilica improve concrete in terms of fatigue behavior?
Fracture Mechanics of Concrete and Concrete Structures. Korea: Korea Concrete Institute, 2010 - (Oh Hwan Byung), s. 1776-1781. ISBN 978-89-5708-182-2.
[International Conference on Fracture Mechanics of Concrete and Concrete Structures. Jeju (KR), 23.05.2010-28.05.2010]
Grant CEP: GA ČR GA103/08/0963
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: fatigue * cement based composites * S-N curve * microsilica
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

Cement-based composites display several attractive characteristics for application in civil structures 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 elements 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 microsilica 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 results (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.
Trvalý link: http://hdl.handle.net/11104/0193363