ASTM C 702

ASTM C 702 - material Turn over the sample with a shovel at least three times for mixing Shovel into a conical pile and flatten Divide the sample

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Reducing Field Samples ASTM C 702 Tim Boyer CM 442 Pre-Lab Purpose The purpose of this test is provide a standard method of selecting samples from a larger quantity of aggregate for purposes of performing different tests on the aggregate. Equipment Sample Splitter – even number of equal width chutes Receptacles to collect aggregate Hopper or pan for steady flow Straight-edged scoop or shovel Broom or brush Canvas Blanket (6 by 8ft) Small scoop Procedure Method A Place the sample into the pan or hopper evenly from edge to edge and introduce to the chute in such a way that the aggregate can flow freely. Repeat for smaller samples. Method B Deposit large sample onto a surface so that there is neither loss of material nor any addition of a foreign
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Unformatted text preview: material. Turn over the sample with a shovel at least three times for mixing. Shovel into a conical pile and flatten. Divide the sample into four equal quarters. Remove two opposite quarters including fine material with a brush. Repeat for smaller samples. Method C Repeat Method B except after that flattening, remove five increments of material from random locations on the pile. Post-Lab Test Conditions Method A was used to acquire samples for the sieving. Method B was exercised but the samples weren’t used for any other experiment. Results The two sample sizes acquired were 3150.5g and 3692.2g Comments Only the large sample splitter was used for reducing the coarse aggregate....
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This note was uploaded on 04/29/2008 for the course CE 320 taught by Professor Mckinney during the Spring '08 term at Rose-Hulman.

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ASTM C 702 - material Turn over the sample with a shovel at least three times for mixing Shovel into a conical pile and flatten Divide the sample

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