. Bulletin of the Department of Agriculture. Agriculture; Agriculture. SAMPLING AND TESTING HIGHWAY MATERIALS. 67 In making the slump test in the laboratory or in the field it is recommended that the form be filled immediately after mixing and withdrawn three minutes after mixing has been completed. When central mixing plants are used slump tests shall be made at the plant and at the end of the haul. At the plant the sample of concrete shall be taken after the h 4". PLAN Fig. 35.—Cone for concrete slump test. entire batch has been discharged from the mixer. At the end of the haul the
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. SAMPLING AND TESTING HIGHWAY MATERIALS. 67 In making the slump test in the laboratory or in the field it is recommended that the form be filled immediately after mixing and withdrawn three minutes after mixing has been completed. When central mixing plants are used slump tests shall be made at the plant and at the end of the haul. At the plant the sample of concrete shall be taken after the h 4". PLAN Fig. 35.—Cone for concrete slump test. entire batch has been discharged from the mixer. At the end of the haul the slump sample shall be taken from the batch after it has been dumped on the subgrade. The slump at the points of deposition shall be suitable for the particular type of finish Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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