Some samples were also prepared by doubling the amount of each reagent, resulting in a sample solution volume of 200 ml. Make up to the one litre mark with distilled water and mix. If nahco 3 soluble, then it is a strong organic acid class a s. Standard test method for acidsoluble chloride in mortar and concrete.
Watersoluble chlorides, in combination with oxygen and moisture, can cause. Analysis of water soluble chloride content in concrete rilem. A rapid method for measuring the acid soluble chloride content of powdered concrete samples. The australian standard test method for acidsoluble chloride has been revised and published as as 1012. Pdf evaluation of chloride limits for reinforced concrete phase a. Use specification limits in concrete are intended to minimize. Pdf factors influencing chloride test results of cementitious. Then add the silver nitrate solution slowly and with constant stirring until the precipitation. Analysis of water soluble chloride content in concrete. Pdf a rapid method for measuring the acidsoluble chloride. Then v e in ml is the volume of silver nitrate added. Note 4test the filtrate for chloride by adding one to two drops of filtrate from the. In this case, the water soluble chloride content, in g per 100 g of sample, is given by equations 1 and 3.
However, some organic substances that may be introduced into mortar or concrete contain chloride that is initially acidinsoluble that can eventually ionize and thus become acidsoluble or watersoluble after a period of exposure in the very alkaline cement system. If not nahco 3 soluble, then it is a weak organic acid class a w. Two different methods of extraction of water soluble chlorides from the solid sample 6 and 7 were tested, taking as. Determination of water soluble chlorides in concrete. If the chloride content is very low, an analysis with 50 ml v p of the remaining solution is made after adding v t 5 ml of hydrochloric acid 0. Use this method to determine the concentration of watersoluble chloride and. Specification for methods of test for determination. Chloride contents in concrete can be expressed as either total, acidsoluble or watersoluble proportions. A rapid method for measuring the acidsoluble chloride content of powdered concrete samples. Determination of free chlorides in aggregates and concrete. Measure 2 ml of nitric acid in a 10ml graduated cylinder, and measure 38. Astm c1152 c1152m 042012e1 standard test method for acid.
Determination of total and soluble chlorides in concrete. Standard test method for acidsoluble chloride in mortar. Table 7 measured acidsoluble chloride content, astm c1152. Thus, a oratory and powdered samples collected from concrete bridges in rapid test procedure for determining the chloride content of con virginia, pennsylvania. Chloride test is used to determine the amount of acidsoluble chlorides. The manual included in the rct500 kit covers testing for acid and watersoluble. Evaluation of chloride limits for reinforced concrete phase a. Acidsoluble chloride contents were measured on the 0. Astm c standard test method for acid soluble chloride in mortar and concrete. Watersoluble chloride contents were measured on the background concrete without admixed chlorides, 0. Buy astm ccme1 standard test method for acid soluble chloride in mortar and concrete from sai global. Limit test of chloride is based on the reaction of soluble chloride with silver nitrate in presence of dilute nitric acid to form silver chloride, which appears as solid particles opalescence in the solution. Astmc1152 standard test method for acidsoluble chloride in mortar and concrete ics number code 91. At the same time, a newly developed watersoluble chloride test method has been published as a parallel australian standard as 1012.