ASTM C876 PDF

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

Calomel reference electrodes have been used in laboratory studies. 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 awtm.

No further reproductions authorized. Concrete surface in building interiors and desert environments lose sufficient moisture so that the concrete resistivity becomes so high that atsm testing techniques not covered in this test method may be required see 5.

Concrete surfaces that are asmt or treated with sealers may not provide an accept- able electrical circuit. It shall consist of a sponge or several sponges pre-wetted with a low electrical resistance contact solution. Enviado por Roberta flag Denunciar.

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For concrete submerged in seawater, using silver-silver chloride reference electrodes avoids chloride contamination problems that may occur with copper-copper sulfate electrodes. 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 xstm this test method may be required see 5. 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.

Referenced Documents purchase separately The documents listed below astmm referenced within the subject standard but are not provided as part of the standard.

Current edition approved Nov. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

ASTM C Standard

Historical Version s – view previous versions of standard. Originally approved in It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use. Concrete cover in excess of 3 in.

The basic configuration of the electrical circuit is shown in Fig. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

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A number in parentheses indicates the year of last reapproval. The sponge may be folded around and attached to the tip of the reference electrode so that it provides electrical continuity between c86 porous plug and the concrete member.

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Significance and Use 4. Concrete cover in excess of 3 in.

Potentials mea- sured by reference electrodes other than saturated copper- copper sulfate should be converted to the copper-copper sulfate 4 Hampel, C. 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.

Link to Active This link will always route to the current Active version of the standard. The basic configuration of the electrical circuit is shown in Fig.

Last previous edition approved in as C— Concrete surfaces that aztm coated or treated with sealers may not provide an acceptable electrical circuit.