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- W658545232 abstract "This article describes the release method which directly measures the stress in either concrete or masonry bridges. A displacement reference field is first set up on the bridge surface. A small slot is then cut in the plane normal to the desired stress direction, and a very thin flat jack is then placed in this slot and used to restore the initial displacement field. The amount of hydrostatic pressure required to do so provides a value for the absolute compressive stress normal to the slot. Tensile stresses can be obtained in a similar manner. Measurement is direct in the sense that the same physical quantity is involved (pressure for stress) and that the elastic properties of the material are not required. Unlike conventional methods, no test loads are applied. The method is quasi non-destructive. Details are provided of: a) measurement of average compressive and tensile stresses; b) the evaluation method used to verify reliability; c) separation of the stress components; d) the method to obtain the absolute stress profile; and e) stress monitoring. Case histories are presented which illustrate the use of the method to evaluate remaining structural capacity, material mechanical durability, and some time dependent behaviour. For the covering abstract of the conference see IRRD 858602." @default.
- W658545232 created "2016-06-24" @default.
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- W658545232 date "1993-01-01" @default.
- W658545232 modified "2023-09-27" @default.
- W658545232 title "DIRECT ACCESS TO STRESSES IN CONCRETE AND MASONRY BRIDGES" @default.
- W658545232 hasPublicationYear "1993" @default.
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