ce332lab2 - Procedure A. Sampling and reducing sample size...

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Procedure A. Sampling and reducing sample size Using metal scoop, load bin with twice the required amount of aggregate While sampling, take scoops from different parts of pile- smaller aggregate stays in the middle, while larger aggregate falls to the edges Split sample in half to get an even sample B. Dry Rodded Unit Weight Once sample is obtained from splitter, fill container with known volume and weight one third with aggregate Using blunt metal rod, rod the aggregate 25 times, getting through the whole layer each time Add another third of aggregate to the container and rod another 25 times, again getting through the whole layer Fill to overflowing and rod 25 times again Use rod to scrape off any excess aggregate Weigh aggregate and container together DRUW is (Wf-Wc)/Vc C. Gradation Once a sample is obtained from the splitter, place a scoopful into a container of known weight and find the weight of the aggregate Stack all necessary sieve sizes in order from smallest at the bottom to largest at
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This note was uploaded on 03/27/2008 for the course CE 332L taught by Professor Khosla during the Spring '08 term at N.C. State.

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ce332lab2 - Procedure A. Sampling and reducing sample size...

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