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.., . 1"'"1 . II . ,., . " . " . " . ,., . .., . ,., . I""l . n . ,.., . .., . II . ..., . I""l . I 1 . r . . TABLE 4 Maximum Allowable Application Chloride Content Ib/yd3 [kg/m3] Production Mix Design Non Reinforced Concrete N/A N/A Reinforced Concrete that does not require Type II cement 0.70 [0.42] 0.64 [0.38] plus slag or pozzolan(s) All applications that require Type II cement plus 0.40 [0.24] 0.34 [0.20] pozzolan(s) Prestressed Concrete 0.40 [0.24] 0.34 [0.20] Determine the chloride content as the average of three tests on samples taken from the concrete. Ensure that the range of results of the three tests does not exceed a chloride content of 0.08 Ib/yd3 [0.05 kg/m3] of concrete. When test results are outside of the allowable range, run an additional three tests until the test results are within the allowable range. The Contractor may obtain samples from representative concrete cylinders or cores tested for compressive strength. If the cylinders or cores have been exposed to salt or aggressive environment, discard the outer 1 inch [25 mm] surface of the sample. 346-4.2.2 Sampling and Testing: Determine the chloride content in accordance with FM 5-516 within two weeks of sampling. (1) For all concrete requiring Type II cement with pozzolan(s) or slag and prestressed concrete, determine the chloride content on a frequency that is in accordance with these Specifications and the following procedures: (a) When the chloride content is 0.25 Ib/yd3 [0.15 kg/m3] or less, determine chloride content at a frequency of not less than one for every four weeks of production as long as the test results remain at or below 0.25 Ib/yd3 [0.15 kg/m3]. As an exception to the aforementioned testing frequency, when eight consecutive tests show chloride content below 0.25 Ib/yd3 [0.15 kg/m3], the Engineer may reduce the frequency to not less than one for every eight weeks of production. (b) When the chloride content is greater than 0.25 [0.15] and less than or equal to 0.33 Ib/yd3 [0.20 kg/m3], determine chloride content at a frequency of not less than one for every two weeks of production, as long as the values remain at or below 0.33 Ib/yd3 [0.20 kg/m3]. (c) When the chloride content is greater than 0.33 Ib/yd3 [0.20 kg/m3], make subsequent chloride content tests for each day's production. (2) For all reinforced concrete, other than the concrete covered in (1) above, determine the chloride content on a frequency of not less than one test every four weeks. As an exception to the aforementioned testing frequency, when eight consecutive chloride content determinations are below 0.40 Ib/yd3 [0.24 kg/m3] of concrete, the Engineer may reduce the frequency to not less than one for every eight weeks of production. For any case listed above, when the source of any concrete component material, including admixtures, is changed, determine the chloride content immediately. 09/09 01000-96 03-4122.F