HOW MUCH AGGREGATE SAMPLE SHOULD WE COLLECT?

The amount of total sample to be collected is dependent on the maximum nominal size of the aggregate. The quantity of the total sample should be of such quantity, so that necessary tests can be done to judge its quality. A sample of the aggregate is collected using a sample scoop.

How much sample should we collect in total
How much sample should we collect in total

take a number Salary increment (at least 10), at regular intervals, so that the minimum amount of the gross sample is equal to the amount given in the following table.

Minimum weight of gross sample

Maximum Nominal Size of Gross(mm)

Minimum Weight of Gross Sample (kg)

for fine aggregate

2.36

10

4.75

10

for coarse aggregate

9.5

10

10

10

12.5

15

13.2

15

16.0

20

19.0

25

20.0

25

25.0

50

37.5

75

40.0

80

50.0

100

63.0

125

75.0

150

80.0

160

90.0

175

notes

  • The minimum amount of gross sample to be collected is 10 kg.
  • For aggregates with a maximum nominal size greater than 20 mm, the minimum weight (in kg) of the aggregate sample is twice its maximum nominal size.
  • For all aggregates, the minimum weight of the gross sample shall be the mass of the coarse aggregate (minimum) plus 10 kg.
  • One Salary increment Means the amount of aggregates received by a sampling instrument at a time.


Er. Mukesh Kumar

Photo of author
Er. Mukesh Kumar is Editor in Chief and Co-Funder at ProCivilEngineer.com Civil Engineering Website. Mukesh Kumar is a Bachelor in Civil Engineering From MIT. He has work experience in Highway Construction, Bridge Construction, Railway Steel Girder work, Under box culvert construction, Retaining wall construction. He was a lecturer in a Engineering college for more than 6 years.