This standard is issued under the fixed designation C; the number 1 This test method is under the jurisdiction of ASTM Committee G01 on. Revisiting the ASTM C standard for corrosion of reinforcing steel: On the correlation between corrosion potential and polarization resistance. This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles.

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Concrete cover in excess of 3 in. Concrete surfaces that are coated or treated with sealers may not provide an acceptable electrical xstm. No further reproductions authorized.

Significance and Use 4. Link to Active This link will always route to the current Active version of the standard. Potentials mea- sured by reference electrodes other than saturated copper- copper sulfate should be converted to the copper-copper sulfate 4 Hampel, C. Current edition approved Nov.

The basic configuration of the electrical circuit is shown in Fig. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Concrete surface in building interiors and desert environments lose sufficient moisture qstm that the concrete resistivity becomes so high that special testing techniques not covered in this test method may be required see 5.

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It is often necessary to use other data such as chloride contents, depth of carbonation, delamination survey findings, rate of corrosion results, and environmental exposure conditions, in addition to corrosion potential measurements, to formulate conclusions concerning corrosion activity of embedded steel and its probable effect on the service life of a structure.

Concrete surfaces that are coated or treated with sealers may not provide an accept- able electrical circuit. The values given in parentheses are mathematical conversions asttm SI units that are provided for information only and are not considered standard.

Standard Test Method for Half-Cell Potentials of Uncoated Reinforcing Steel in Concrete

It is often necessary to use other data such as chloride contents, depth of carbonation, delamination survey findings, rate of corrosion results, and environmental exposure conditions, in addition to corrosion potential measurements, to formulate conclusions concerning corrosion activity of embedded steel and its probable effect on the service life of a structure. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Last previous edition approved in as C— Originally approved in The sponge may be folded around and attached to the tip of the reference electrode so that it provides electrical continuity between the porous plug and the concrete member. Asfm Version s – view previous versions of standard. Enviado por Roberta flag Denunciar.

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ASTM C Half-Cell Potentials of Uncoated Reinforcing Steel | CTL

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. Concrete surface in building interiors and desert environments lose sufficient moisture so that the concrete resistivity becomes so high that special testing techniques not covered in this test method may be required see satm.

It shall consist of a sponge or several sponges pre-wetted with a low electrical resistance contact solution. Calomel reference electrodes have been ast in laboratory studies. Concrete cover in excess of 3 in. For concrete submerged in seawater, using silver-silver chloride reference electrodes avoids chloride contamination problems that may occur with copper-copper sulfate electrodes.

It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of atsm limitations prior to use.

The basic configuration of the electrical circuit is shown in Fig. A number in parentheses indicates the year of last reapproval.