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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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 c786 required see 5. The basic configuration of the electrical circuit is shown in Fig.

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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.

The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. It is the responsibility of the user of this standard to establish appro- priate asrm and health practices wstm determine the applica- bility of regulatory limitations prior to use.

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Concrete cover in excess of 3 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.

Link to Active This link will always route to the current Active version of the standard. Significance and Use 4. Referenced Documents purchase separately The documents listed below are referenced within the subject standard ast are not provided as part of the standard. No further reproductions authorized. Current edition approved Nov. Historical Version s – view previous versions of standard.

Concrete surfaces that are coated or treated with sealers may not provide an acceptable electrical circuit. A number in parentheses indicates the year of last reapproval. It is often necessary to use other data such as chloride contents, depth of carbonation, c8876 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.

Potentials mea- sured by reference electrodes other than saturated copper- copper sulfate should be converted to the copper-copper sulfate 4 Hampel, C. Concrete surfaces that are coated or treated with sealers may not provide an accept- able electrical circuit.

The basic configuration of the electrical circuit is shown in Fig.

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

c86 Calomel reference electrodes have been used in laboratory studies. Enviado por Roberta flag Denunciar. It shall consist of a sponge or several sponges pre-wetted with a low electrical resistance contact solution. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the c867 of regulatory limitations prior to use.

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.

Last previous edition approved in as C— Concrete surface in building interiors and desert environments lose astn moisture so that the concrete resistivity becomes so high that special testing techniques not covered in this test method may be required see 5. Originally approved in The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.