Print Email Facebook Twitter Test methods for on site measurement of resistivity of concrete. A RILEM TC-154 Technical Recommendation Title Test methods for on site measurement of resistivity of concrete. A RILEM TC-154 Technical Recommendation Author Polder, R.B. Contributor Basheer, P.A.M. (editor) Publication year 2000 Abstract This paper describes methods to assess concrete resistivity on site for various purposes related to corrosion and protection of reinforcement. It is based on a first draft of a RILEM Technical Recommendation. The electrical resistivity of concrete can be related to the two processes involved in corrosion of reinforcement: initiation (chloride penetration) and propagation (corrosion rate). The resistivity of a structure exposed to chloride indicates the risk of early corrosion damage, because a low resistivity is related to rapid chloride penetration and to a high corrosion rate. Once damage has occurred, resistivity is relevant for electrochemical maintenance methods. The resistivity of the near surface concrete can be measured non-destructively by placing electrodes on the concrete surface, applying a voltage and measuring the current. Several arrangements can be used: one electrode (the reinforcement is the second electrode), two electrodes, four electrodes. Practical aspects of these arrangements are discussed. Procedures for calibration are proposed. Guidelines for the interpretation and reference values for various exposures and concrete compositions are given Subject Architecture and BuildingConcreteMeasurement methodsNDTNon destructive methodsOn site methodsReinforcement corrosionResistivity To reference this document use: http://resolver.tudelft.nl/uuid:d856b4ea-27c6-45ce-bd51-2cb51f12e69d TNO identifier 329654 Source 5th CANMET/ACI International Confererence on Durability of Concrete, Barcelona, Spain, 4-9 June. Proceedings of a Special Technical Session on Near-Surface Testing and Durability of Concrete, 139-154 Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.