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Significance and Use
3.1 The amount of acid-soluble chloride in most hydraulic-cement systems is equal to the total amount of chloride in the system. 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.
3.2 Sulfides are known to interfere with the determination of chloride content. Blast-furnace slag aggregates and cements contain sulfide sulfur in concentrations that can cause such interference and produce erroneously high test results. Treatment with hydrogen peroxide, as discussed in Test Methods C114, is used to eliminate such interference.
3.3 There are aggregates that contain chloride that is not available for corrosion. Such chloride will be detected by the use of this method.4
1.1 This test method2 provides procedures for the sampling and analysis of hydraulic-cement mortar or concrete for chloride that is acid soluble under the conditions of test. In most cases, acid-soluble chloride is equivalent to total chloride.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C42/C42M Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
C114 Test Methods for Chemical Analysis of Hydraulic Cement
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
C702/C702M Practice for Reducing Samples of Aggregate to Testing Size
C823/C823M Practice for Examination and Sampling of Hardened Concrete in Constructions
C1084 Test Method for Portland-Cement Content of Hardened Hydraulic-Cement Concrete
D1193 Specification for Reagent Water
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
ICS Number Code 91.100.10 (Cement. Gypsum. Lime. Mortar); 91.100.30 (Concrete and concrete products)
UNSPSC Code 30111504(Mortars); 30111500(Concrete and mortars)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM C1152 / C1152M-04(2012)e1, Standard Test Method for Acid-Soluble Chloride in Mortar and Concrete, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top