A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Corrosion threshold value and corrosion rate in reinforced concrete
Corrosion of steel in Portland cement concrete occurs whenever the external influences change the composition of the pore solution. Steel is passive in the highly alkaline environment of the Portland cement pore solution. Chloride ions and carbonation of the concrete can destroy this passivity and result in corrosion of the steel. The aim of this investigation was to determine the influence of a number of factors on the critical content of chloride necessary to initiate corrosion, and the corrosion rate of steel embedded in mortar. The critical chloride content required to destroy the passivity and the corrosion rate of steel were measured indirectly and directly using the polarization resistance technique. The results of this investigation show that the water/binder ratio and the contents of fly ash and micro silica are the factors that influence the critical chloride content and corrosion rate. (22 refs., 15 figs., 4 tabs.).
Corrosion threshold value and corrosion rate in reinforced concrete
Corrosion of steel in Portland cement concrete occurs whenever the external influences change the composition of the pore solution. Steel is passive in the highly alkaline environment of the Portland cement pore solution. Chloride ions and carbonation of the concrete can destroy this passivity and result in corrosion of the steel. The aim of this investigation was to determine the influence of a number of factors on the critical content of chloride necessary to initiate corrosion, and the corrosion rate of steel embedded in mortar. The critical chloride content required to destroy the passivity and the corrosion rate of steel were measured indirectly and directly using the polarization resistance technique. The results of this investigation show that the water/binder ratio and the contents of fly ash and micro silica are the factors that influence the critical chloride content and corrosion rate. (22 refs., 15 figs., 4 tabs.).
Corrosion threshold value and corrosion rate in reinforced concrete
K. Pettersson (author)
1992
36 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Construction Materials, Components, & Equipment , Corrosion & Corrosion Inhibition , Reinforced Concrete , Corrosion , Chlorides , Fly Ash , Portland Cement , Silicon Oxides , Steels , Foreign technology , Concrete durability , Reinforcing steels , EDB/360105 , EDB/010500
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