000002126 001__ 2126
000002126 005__ 20141118153442.0
000002126 04107 $$acze
000002126 046__ $$k2013-05-27
000002126 100__ $$aALHOZAIMY, Abdulrahman
000002126 24500 $$aEFFECT OF STEEL REBAR COMPOSITION AND SURFACE CONDITION ON THE CORROSION RATE OF RC STRUCTURES

000002126 24630 $$n1.$$pProceedings of the First International Conference on Concrete Sustainability
000002126 260__ $$bJapan Concrete Institute, Tokyo
000002126 506__ $$arestricted
000002126 520__ $$2eng$$aThis paper examines the influence of reinforcement steel elemental composition and surface condition (polished and unpolished) on the corrosion rate of reinforced concrete (RC) structures under the effect of severe environmental conditions in the Kingdom of Saudi Arabia. Several RC specimens were cast with five different steel elemental compositions (A to E) and two surface conditions. Half-cell potential and corrosion current was measured using GECOR device as a function of time. Highest corrosion potential on the negative side was obtained for steel source ‘D’ and ‘E’ which indicates that they were most prone to corrosion. On the other hand, steel source ‘A’ and ‘B’ were found to be the most immune to corrosion with lowest negative potential values. The steel source ‘C’ was having intermediate values of corrosion potential. Also, a change in the rate and behavior of half-cell corrosion potential was observed for different steel sources which can be attributed to the different chemistry and microstructure of steel sources and their specific reaction to the varying temperature conditions. Steels with polished and unpolished surface conditions showed a visible difference in the magnitude of corrosion. The polished surface was more resistant to corrosion giving lesser corrosion rates which can be attributed to a better and stronger passive layer developed on polished steel surface in comparison to the unpolished steel surface irrespective of chloride and temperature conditions. However, it is worth mentioning here that this difference in the magnitude of corrosion seemed to decrease with the rise in temperature.

000002126 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000002126 653__ $$asteel composition, surface condition, chloride, temperature, humidity, corrosion, reinforced concrete.

000002126 7112_ $$aFirst International Conference on Concrete Sustainability$$cTokyo (JP)$$d2013-05-27 / 2013-05-29$$gICCS13
000002126 720__ $$aALHOZAIMY, Abdulrahman$$iNEGHEIMISH, Abdulaziz Al$$iHUSSAIN, Raja Rizwan
000002126 8560_ $$ffischerc@itam.cas.cz
000002126 8564_ $$s1847653$$uhttp://invenio.itam.cas.cz/record/2126/files/S2-3-2.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000002126 962__ $$r2053
000002126 980__ $$aPAPER