99. Behavior of steel fibrous cement based composites in the anchorage zones of prestressed bridges

Title: 99. Behavior of steel fibrous cement based composites in the anchorage zones of prestressed bridges
Author(s): L. Ay
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: 1093 - 1102
Total Pages: 10
Nb references: 3
Language: English

Abstract: Behavior of Steel Fibrous Cement Based Composites (SFCBC) in the anchorage zones of prestressed bridges was investigated. The cylindrical compressive strength of the Self-compacting and Self-leveling composite was . Three series of prismatic specimens were tested for plain concrete and for SFCBC at volume fractions of fibers and . The specimens were investigated under different concentration ratios of strip loading. The results of these tests showed that the ultimate strength of the SFCBC specimens was approximately twice that of ordinary concrete (C60) with the same size and reinforced with stirrups. Therefore, SFCBC has good possibility to replace the traditional rebars in the anchorage zones of prestressed bridges.This composite has different behavior than the traditional concrete e.g. crack formation, failure criteria, effective strength and angle of friction. A vertical crack on the centerline occurred while wedge developed under the loading platen. In contrast to ordinary concrete, the cracks could not reach to the bottom of the blocks. Upper-bound plasticity solutions were utilized for the modeling of bearing capacity of SFCBC. Calculations and the test results were compared. The predictions of this method are good enough to estimate the bearing capacity of SFCBC in the anchorage zones of prestressed bridges.

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