000			01924nab a2200193 4500
005			20260520001103.0
008			260224s2012 xxu
245	0	0	_aComparative cathodic behavior of 9% Cr and plain steel reinforcement in concrete
260			_a _b _cabr. 2012
270			_a04/05/2012 ; 04/05/2012
300			_a9 p. ; 045003-1 / 045003-10
520			_aTranscripción del resumen del autor: The extent of the oxygen reduction reaction in concrete was evaluated for ~9% Cr rebar approaching the ASTM A1035 specification and compared to that of conventional carbon steel rebar, at ages of up to ~1 year. Cathodic strength was measured by the cathodic current density developed at -0.35 V vs. copper/copper sulfate (Cu/CuSO4 [CSE]) and -0.40 VCSE in cyclic cathodic potentiodynamic polarization tests, both in the as-received condition with mill scale and with scale removed by glass bead surface blasting. In both conditions the ~9% Cr alloy was a substantially weaker cathode, by a factor of several fold, than carbon steel. Within each material, the surface-blasted condition yielded also much lower cathodic current density than the as-received condition. For a small anode-large cathode system with a given anode polarization function, and no important oxygen reduction concentration polarization, the corrosion current was projected to be significantly lower if the cathodic region were ~9% Cr instead of plain steel rebar with comparable surface condition. There was strong correlation between the charge storage capability of the interface and the extent of cathodic reaction of oxygen. The result cannot be ascribed solely to differences in effective surface area between the different materials and conditions.
581			_a4
773	0		_tCorrosion _g68
942			_cARTICULO
100	1		_aAkhoondan, M. _952530
100	1		_aSagüés, A.A. _927138
999			_c187133 _d187133