Standard Test Method for K-slump of Freshly Mixed Concrete

Abstract

5.1 This test method permits a rapid assessment of the consistency of freshly mixed concrete. 5.2 This test method can be used to provide information on the change in consistency with time of a freshly mixed concrete mixture. It is especially valuable for assessing the consistency of flowing or self-consolidating concrete mixtures. 5.3 This test method can be used to assess batch-to-batch variations in consistency of freshly mixed concrete. 5.4 There is no general reliable relationship between the K-slump value and slump measured in accordance with Test Method C143/C143M or slump flow measured in accordance with Test Method C1611/C1611M. However, this test method is useful as a quality control tool. For example, the user can make trial batches in the laboratory and determine the range in K-slump corresponding to an acceptable range in slump or slump flow. That range in K-slump can be used to check the consistency of field batches. 5.5 This test method is not suitable as the basis for acceptance or rejection of concrete.