Sieve analysis is conducted to establish the particle size distribution of the coarse and fine aggregates. This is performed with sieving the aggregates according to IS: 2386 (Part I) – 1963. Here, various types of sieves are applied as recommended by the IS code and then the aggregates are passed through them and thus the particles with different sizes are obtained which are abandoned on various sieves.
The following equipments are utilized for sieve analysis.
i) A set of IS Sieves of sizes – 80mm, 63mm, 50mm, 40mm,31.5mm, 25mm, 20mm, 16mm, 12.5mm, 10mm, 6.3mm,4.75mm, 3.35mm, 2.36mm, 1.18mm, 600µm, 300µm, 150µm and 75µm.
ii) Balance or scale with a precision to calculate 0.1 percent of the weight of the test sample. The sample for sieving is created from the bigger sample either by quartering or with the help of a sample divider.
Sieving Test Method as per British standard
Materials Required
Specimen, sieve shaker, BS410 Standard sieves, 0.1g accuracy balance, oven, porcelain dish and spatula, receiving pan, cleaning brush and clock.
Method:
Cleanse the sieves of sieve shaker with cleaning brush to check whether any particles are blocked in the openings.
Note down the weight of each sieve and receiving pan.
Dry the specimen in oven for 3-4 minutes to obtain the dried specimen (overlook, if the specimen is already dried).
Weigh the specimen and note down its weight.
Place the sieves in such a manner that the smaller openings sieve remains to the last and larger openings sieve remains to the top. (Just, organize them to the ascending order of sieve numbers – No.4 sieve on top and no.200 sieve at bottom).
Retain the weight recorded specimen on the top sieve and then provide the complete sieve stack on the sieve shaker along with the lid and receiving pan.
Let the shaker to function 10-5 minutes – Utilize the clock here.
Detach the sieve stack from the shaker and note down the weight of each sieve and receiving pan individually.
Download the following sample sheet for sieve analysis.
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Published By
Rajib Dey
www.constructioncost.co
~~~~~~~~~~~~~~~~~~~~~~~~
The following equipments are utilized for sieve analysis.
i) A set of IS Sieves of sizes – 80mm, 63mm, 50mm, 40mm,31.5mm, 25mm, 20mm, 16mm, 12.5mm, 10mm, 6.3mm,4.75mm, 3.35mm, 2.36mm, 1.18mm, 600µm, 300µm, 150µm and 75µm.
ii) Balance or scale with a precision to calculate 0.1 percent of the weight of the test sample. The sample for sieving is created from the bigger sample either by quartering or with the help of a sample divider.
Sieving Test Method as per British standard
Materials Required
Specimen, sieve shaker, BS410 Standard sieves, 0.1g accuracy balance, oven, porcelain dish and spatula, receiving pan, cleaning brush and clock.
Method:
Cleanse the sieves of sieve shaker with cleaning brush to check whether any particles are blocked in the openings.
Note down the weight of each sieve and receiving pan.
Dry the specimen in oven for 3-4 minutes to obtain the dried specimen (overlook, if the specimen is already dried).
Weigh the specimen and note down its weight.
Place the sieves in such a manner that the smaller openings sieve remains to the last and larger openings sieve remains to the top. (Just, organize them to the ascending order of sieve numbers – No.4 sieve on top and no.200 sieve at bottom).
Retain the weight recorded specimen on the top sieve and then provide the complete sieve stack on the sieve shaker along with the lid and receiving pan.
Let the shaker to function 10-5 minutes – Utilize the clock here.
Detach the sieve stack from the shaker and note down the weight of each sieve and receiving pan individually.
Download the following sample sheet for sieve analysis.
~~~~~~~~~~~~~~~~~~~~~~~~
Published By
Rajib Dey
www.constructioncost.co
~~~~~~~~~~~~~~~~~~~~~~~~
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