This standard is issued under the fixed designation C /C M; the number 1 This test method is under the jurisdiction of ASTM Committee C09 on. Baixe grátis o arquivo ASTM CCM – 04 _ Acid-Soluble Chloride in Mortar and enviado por Juliano no curso de Engenharia Civil na. ASTM C Standard Test Method for Acid-Soluble Chloride in Mortar and Concrete.
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The alternative designation in parentheses is for information only and does not represent a different standard sieve size.
However, some organic substances that may be introduced into mortar or concrete contain chloride that is initially acid-insoluble that can eventually ionize and thus become acid-soluble or water-soluble after a period of exposure in the very alkaline cement system. No further reproductions authorized.
Make a blank determination using 75 mL of water in place of sample.
Asym otherwise indicated, it is intended that axtm reagents shall conform to the specifications of the Commit- tee onAnalytical Reagents of theAmerican Chemical Society5. Immerse the electrodes into the solution, taking care that the stir bar does not strike the electrodes. Current edition approved Dec. Other grades may be used, provided it is first ascertained that the reagent is of sufficiently high purity to permit its use without lessening the accuracy of the determination.
Procedures for this method of sampling are as follows: Link to Active This link will always route to the current Active version of the standard.
Excessive amounts of acid can erode the silver chloride coating on the silver astk electrode prematurely. If the solution above the settled solids is not pink colored, add more nitric acid dropwise while stirring until a pink or reddish color persists, then add 10 additional drops of nitric acid and stir.
ASTM C1152.C1152M – 04 – Acid-Soluble Chloride in Mortar and Concrete
Astm a Astm a A number in parentheses indicates the year of last reapproval. Use Specification limits in concrete are intended to minimize rebar corrosion. Place the beaker on a magnetic stirrer and add a TFE-fluorocarbon coated stir bar. Submit the concrete mix design if the results will be expressed as Cl – percentage of cement. However, some organic substances that may be introduced into mortar or concrete contain chloride that is initially acid-insoluble that can eventually ionize and thus become acid-soluble or water-soluble after a period of exposure in the very alkaline cement system.
Treatment with hydrogen peroxide, as discussed in Test Methods Cis used to eliminate such interference. Cover the beaker with a watch glass and allow to stand for 1 to 2 minutes. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Such chloride will be detected by the use of this method.
ICS Number Code If the smell of hydrogen sulfide is strongly present, add 3 mL of hydrogen peroxide See Note 5. Historical Version s – view previous versions of standard. Clean all sampling tools prior to each sampling operation See Note 4. Penetration of deicer salt and seawater c112 be assessed by profiling chloride concentration at various positions in the sample.
Chemical Society, Washington, DC.
ASTM C / CM – 97 Standard Test Method for Acid-Soluble Chloride in Mortar and Concrete
Note 1 — Sieve size is identified by its standard designation in Specification E The volume should not exceed mL.
Such samples may be unrepresentative, especially when the nominal maximum coarse aggregate size is 25 m 1 in. Specification D for Type I reagent water. Some values have only SI units because the inch-pound equivalents are not used in practice. Page and John S. A digital readout is preferred but not required. Blast-furnace slag aggregates and cements contain sulfide sulfur in concentrations that can cause such interference and produce erroneously high test results. Directreading balances shall have a sensitivity not exceeding atsm.
Such chloride will be detected by the use of this method.