Effect of recycled glass fiber on the corrosion behavior of reinforced mortar

• Effect of pyrolysis glass fiber on the corrosion process of mortars was evaluated.
• The physico-chemical properties of these mortars (PGF + OPC) have been investigated.
• In samples with 5% and 10% PGF the corrosion rates is similar to that of OPC.
• The 15% PGF favors the diffusion of chlorides and the corrosion process is eased.
• An efficient way to reuse the PGF could be the construction sector.

The corrosion behavior of steel bars embedded in mortars made with a blend of Portland cement and 0–15 wt.% of residual pyrolysis glass fiber (PGF), with a water/binder ratio of 0.5 and partially immersed in 3% NaCl solution was studied. The physico-mechanical properties of these mortars and the evolution with time of corrosion potential, linear polarization resistance and electrochemical impedance results were recorded. The electrochemical measurements indicate that in the mortars with 5% and 10% PGF the steel corrosion current (icorr) is similar to the reference one. With 15% PGF, icorr of steel is higher than in the other systems.

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