A new type of post-installed wedge anchor (B15G) is presented. A refined geometry of the anchor bolt and a careful choice of all the technical details, allow the insert to work also in tensile stress states and to avoid much of the practical uncertainties that affect the commonly used procedures. The calibration of the procedure has been performed on 3 classes of concrete and for 5 stress distributions (medium and low compression, vanishing stress states, inhomogeneous compressive stresses and inhomogeneous tensile stresses). It has been found that the correlation curves, pull-out force vs. compressive strength, are not linear and depend on the stress state; besides, the statistical scattering of the calibration tests never exceeds 7-8% of the average values

A new pull-out technique for in-place estimation of concrete compressive strength

BRENCICH, ANTONIO;CASSINI, GIANCARLO;PERA, DAVIDE;RIOTTO, GIUSEPPE
2013

Abstract

A new type of post-installed wedge anchor (B15G) is presented. A refined geometry of the anchor bolt and a careful choice of all the technical details, allow the insert to work also in tensile stress states and to avoid much of the practical uncertainties that affect the commonly used procedures. The calibration of the procedure has been performed on 3 classes of concrete and for 5 stress distributions (medium and low compression, vanishing stress states, inhomogeneous compressive stresses and inhomogeneous tensile stresses). It has been found that the correlation curves, pull-out force vs. compressive strength, are not linear and depend on the stress state; besides, the statistical scattering of the calibration tests never exceeds 7-8% of the average values
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11567/698130
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