Reducing Field Sample of Aggregate to Test Sample

Reducing Field Sample of Aggregate to Test Sample

Purpose: To obtain laboratory samples of aggregates from stockpiles.

Equipment: Shovel, scoop , boom.

Procedure: 

1-Obtain a sample of aggregate (about 50 kg) from three places in the  stockpile: from the top third, at the midpoint, and from the bottom third   of the volume of the pile.                     

2- Place the field sample on a hard, clean level surface.

3- Mix the material thoroughly by turning the entire sample three times.

4- Shovel the entire sample into a conical pile.

5- Carefully flatten the conical to a uniform thickness and diameter by  pressing down the apex with a shovel. ( The diameter should be approximately four to eight times the thickness).

6- Divide the flattened mass into four equal quarters with a shovel.

7- Remove two diagonally opposite quarters. Brush the cleared spaces  clean.

8-Mix and quarter the remaining materials until the sample is reduced to  the desired size.

Note 

   The sample splitters can be used instead of  flattening the mass on a level surface.

                           

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I am Thomas Britto here to share my experiences in the civil engineering field to all my readers.Today many students are struggling to buy books at high prices. So I decided to start a blog and share my experience and knowledge with all my readers.

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