Title of article :
Organic corrosion inhibitor mixtures for reinforcing steel embedded in carbonated alkali-activated fly ash mortar
Author/Authors :
Criado، نويسنده , , M. and Monticelli، نويسنده , , F. Balibrea Gallego and J. C. Valverde Fajardo، نويسنده , , S. and Gelli، نويسنده , , D. and Grassi، نويسنده , , V. and Bastidas، نويسنده , , J.M.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
8
From page :
30
To page :
37
Abstract :
This paper evaluates the inhibitive effect of two mixtures of organic compounds, disodium β-glycerol phosphate (GPH) with sodium 3-aminobenzoate (3AMB) and GPH with sodium N-phenylanthranilate (PhAMB), on the corrosion of carbon steel reinforcement bars embedded in carbonated chloride-polluted ordinary Portland cement (OPC) and alkali-activated fly ash (FA) mortars. Mortar carbonation was achieved by maintaining the specimens in a carbon dioxide (CO2) atmosphere for 60 days at room temperature and 65% relative humidity. The OPC and FA mortars were partially immersed in a water solution containing 1% (by binder weight) chlorides (as NaCl), both in the absence and in the presence of the inhibitors. onated synthetic solution containing 0.1 M NaCl simulating the pore chemistry in carbonated chloride-polluted mortars was used to obtain preliminary results on the efficiency of the corrosion inhibitors. Inhibitor efficiency was assessed in the solution by polarization curve recording and in the mortars by electrochemical impedance spectroscopy (EIS) analysis. The mixture of GPH with PhAMB showed the best protective properties.
Keywords :
Steel reinforced mortar , Corrosion , Alkali-activated fly ash mortar , Inhibiting mixture , Carbonation , chloride
Journal title :
Construction and Building Materials
Serial Year :
2012
Journal title :
Construction and Building Materials
Record number :
1633490
Link To Document :
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