HOW TO CHECK QUALITY OF CEMENT ON SITE | EASY NIRMAN

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• It is necessary to check the quality of cement on
  site at the time of preliminary inspection.

• on site we can perform these field tests to judge
  the quality of cement. These field tests are as
  follows

1. Date of packing
5. Float Test
2. Color
6. Smell Test
3. Rubbing
7. Presence of lumps
4. Hand Insertion
8. Shape Test
9. Strength Test
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FIELD TESTS ON CEMENT
1. Date Of Packing

• Date of manufacture should be seen on the bag. It
  is important because the strength of cement
  reduces with age.

Date Of Packing 12/12/16
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FIELD TESTS ON CEMENT
2. Color

• The cement should be uniform in colour. In
  general the colour of cement is grey with a light
  greenish shade.

• The colour of cement gives an indication of
  excess lime or clay and the degree of burning.

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FIELD TESTS ON CEMENT
3. Rubbing

• Take a pinch of cement between fingers and rub
  it. It should feel smooth while rubbing. If it is
  rough, that means adulteration with sand.

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FIELD TESTS ON CEMENT
4. Hand Insertion

• Thrust your hand into the cement bag and it
  should give cool feeling. It indicates that no
  hydration reaction is taking place in the bag.

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FIELD TESTS ON CEMENT
5. Float Test

• Throw a small quantity of cement in a bucket of
  water. It should sink and should not float on the
  surface.

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FIELD TESTS ON CEMENT
6. Smell Test

• Take a pinch of cement and smell it. If the
  cement contains too much of pounded clay and silt
  as an adulterant, the paste will give an earthy
  smell.

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FIELD TESTS ON CEMENT
7. Presence Of Lumps

• Open the bag and see that lumps should not be
  present in the bag. It will ensure that no
  setting has taken place.

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FIELD TESTS ON CEMENT
7. Shape Test

• Take 100g of cement and make a stiff paste.
  Prepare a cake with sharp edges and put on the
  glass plate. Immerse this plate in water. Observe
  that the shape shouldnt get disturbed while
  settling.

• It should be able to set and attain strength.
  Cement is capable of setting under water also and
  that is why it is also called Hydraulic Cement.

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FIELD TESTS ON CEMENT
7. Strength Test

• A block of cement 25 mm25 mm and 200 mm long is
  prepared and it is immersed for 7 days in water.

• It is then placed on supports 15000 mm apart and
  it is loaded with a weight of 340 N. the block
  should not show any sign of failure.

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