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- W594751014 abstract "The bridge affected by A.A.R. (alkali-aggregate reaction) is located near Paris. It is an open frame, the piers of which are severely damaged by A.A.R. In an attempt to stop the evolution of the horizontal deformation of the pier, 0.4mm/m/year, transverse prestressing of the piers is being considered. After a brief presentation of the bridge, its construction, and its disorders, the paper presents the experimental plan conceived to study the feasibility of strengthening by prestressing. The first stage of the study consisted of sampling cores, suitably oriented in the structure, and measuring their expansion under different compressive stresses (1, 3, and 5 MPa). The free expansion was measured at the same time. The expansion tests were intended to be as representative as possible of the conditions of exposure of the bridge. Accordingly, they were performed at 20 degrees C in tap water. This was chosen after testing of free expansion in solutions regarded as more aggressive, such as NaCl or KOH and NaOH. The results obtained after a year of monitoring are presented, then interpreted, in the context of a strengthening of the bridge. (A) For the covering abstract see IRRD 871351." @default.
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- W594751014 date "1992-01-01" @default.
- W594751014 modified "2023-09-24" @default.
- W594751014 title "EVOLUTION UNDER STRESS OF A CONCRETE AFFECTED BY A.A.R. - APPLICATION TO THE FEASILBILITY OF STRENGTHENING A BRIDGE BY PRESTRESSING" @default.
- W594751014 hasPublicationYear "1992" @default.
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