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124. Fatigue behavior of new ultra-high performance cement composite

Title: 124. Fatigue behavior of new ultra-high performance cement composite
Author(s): E. Parant, P. Rossi, C. Boulay
Paper category : conference
Book title: 6th International RILEM Symposium on Fibre Reinforced Concretes
Editor(s): M. di Prisco, R. Felicetti and G.A. Plizzari
Print-ISBN: 2-912143-51-9
e-ISBN: 2912143748
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 1353 - 1360
Total Pages: 8
Nb references: 3
Language: English

Abstract: The paper examines the response of new ultra-high performance cement composite (UHPCC) to static and cyclic loading. The composite is an ultra compact cement matrix with a high volume fraction of metallic fibers. Static and fatigue tests were performed on thin prismatic specimens under flexion. Deflection at mid-span, strain in the constant moment zone and crack opening are monitored using adequate transducers. A critical initial strain threshold is identified; a strong correlation is highlighted between the fatigue life and the initial damage (due to the first static loading). A Wöhler curve is rebuilt based on the initial damage measurement (during first static loading) and the characteristic static curve (integrating dispersion). The fatigue endurance limit calculated is equal to 30 MPa, respectively 65 % of the characteristic Modulus of Rupture. A gain of 7% is observed between the bending static behaviour of the specimens being previously loaded in fatigue and those not being loaded in fatigue.

Online publication: 2004-08-30
Publication type : full_text
Public price (Euros): 0.00

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