MET-HODS OF TEST FOR DETERMINATION OF WATER SOLUBLE CHLORIDES IN CONCRETE ADMIXTURES
MET-HODS OF TEST FOR DETERMINATION OF WATER SOLUBLE CHLORIDES IN CONCRETE ADMIXTURES This standard specifies the following methods of test for determination of water soluble chlorides in concrete admixtures: a) Volumetric method, b) Gravimetric method, and c) Turbidimetric method. SELECTION OF METHOD 2.0 One of the three methods may be used appropriately depending on the concentration of the chlorides in the admixtures as per the declaration of the manufacturer. 2.1 The volumetric method may be used when the chloride concentration is nearly 1 percent or above. 2.2 The gravimetric method may be used when the chloride concentration is more than 2’5 percent. 2.3 The turbidimetric method may be used when the concentration of chloride is as low as 2 ppm and above. 2.4 Where a choice is open between volumetric and gravimetric methods volumetric method is preferable as it is quicker and less laborious. Turbidimetric method may be adopted when the ...