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Lemon Test - The lemon test is to determine the ability of your granite to resist etching. Follow the steps below: 1  Place a wedge of lemon or lime, cut side down, on the sample overnight. 2  Wipe the sample in the morning and hold it at an angle to the light.  Check for a rough spot where the lemon was placed.
to produce concrete with a high workability is also added. As shown in Table 1.1, seven batches were tested for workability and flow. Batch one established the reference slump value for the Kistner mix using the standard ASTM cone test. The water content was adjusted to compensate for the dry gravel and sand used in the lab. The flow table test procedure does not conform with ASTM standard and is as follows. Concrete is placed into a cylindrical steel mold with an inner diameter of 36 mm.