The structural behaviour of reinforced concrete structures is strictly related to bond performance between steel and concrete. In the present paper, bond tests on r.c. specimens in presence of corrosion are performed in order to evaluate the damage on bond mechanism due to corrosion. The results of the tests on concrete specimens with RILEM type shape, having side of 120 mm and 160 mm, reinforced with ribbed steel bars with diameter of 12 and 16 mm, respectively with and without confinement, in presence of an increasing level of corrosion up to 20% of estimated mass loss are presented. Corrosion is applied by means of an electrochemical procedure using a current density of 200 μA/cm2. The test results show the effect of oxidation of the steel at the interface with concrete and the change of performance in terms of bond strength.

Pull-out tests on r.c. corroded specimens / Cesetti, Alessandro; Mancini, Giuseppe; Tondolo, Francesco. - (2015), pp. 123-129. (Intervento presentato al convegno International Conference on concrete repair, rehabilitation and retrofitting, iccrrr 2015 tenutosi a Lipsia nel 5-7 Ottobre 2015).

Pull-out tests on r.c. corroded specimens

CESETTI, ALESSANDRO;MANCINI, GIUSEPPE;TONDOLO, FRANCESCO
2015

Abstract

The structural behaviour of reinforced concrete structures is strictly related to bond performance between steel and concrete. In the present paper, bond tests on r.c. specimens in presence of corrosion are performed in order to evaluate the damage on bond mechanism due to corrosion. The results of the tests on concrete specimens with RILEM type shape, having side of 120 mm and 160 mm, reinforced with ribbed steel bars with diameter of 12 and 16 mm, respectively with and without confinement, in presence of an increasing level of corrosion up to 20% of estimated mass loss are presented. Corrosion is applied by means of an electrochemical procedure using a current density of 200 μA/cm2. The test results show the effect of oxidation of the steel at the interface with concrete and the change of performance in terms of bond strength.
2015
978-1-138-02843-2
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2628144
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