Analytical Prediction For The Capacity Of Old-new Concrete Interfaces
Author(s)
A. P. Lampropoulos, 0.T. Tsioulou & S. E. Dritsos
Abstract
Analytical prediction for the capacity of oldnew
concrete interfaces
A. P. Larnpropoulos, 0. T. Tsioulou & S. E. Dritsos
Department of Civil Engineering, University of Patras, Greece
Abstract
The ANSYS computer program has been used to examine the behaviour of the
interface between old and new concrete in a column strengthened by the addition
of a concrete jacket. The friction, the cohesion and the thickness of the jacket are
the three parameters that have been examined. Friction and cohesion are
considered as the parameters that influence the strength at the interface. The
maximum shear strength at the interface is given by the equation Tli, = pP+c,
where: p is the frictional coef$cient, P is the contact normal pressure and c is
the contact cohesion. Initially, a smooth contact, where the friction and the
cohesion are very small, has been examined. Then a rough contact surface was
used. Finally, a column that has been strengthened with thicker concrete jacket
has been investigated. After all o
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