FINENESS OF CEMENT TEST IS 4031 (Part 1):1988

 

Objective: 

Determination of fineness of cement by dry sieving. Reference: IS 4031 (Part-1):1988.

 Apparatus:

  IS-90 micron sieve conforming to IS: 460 (Part 1-3)-1985; Weighing balance; Gauging trowel; Brush. Material: Ordinary Portland cement

Procedure: 

1. Weigh accurately 100 g of cement to the nearest 0.01 g and place it on a standard 90 micron IS sieve. 2. Break down any air-set lumps in the cement sample with fingers.

 3. Agitate the sieve by giving swirling, planetary and linear movements for a period of 10 minutes or until no more fine material passes through it. 

4. Collect the residue left on the sieve, using brush if necessary, and weigh the residue. 

5. Express the residue as a percentage of the quantity first placed on the sieve to the nearest 0.1 percent.

 6. Repeat the whole procedures two more times each using fresh 100 g sample.

Result: 

Percentage residue of cement sample by dry sieving is ___________ percentage. 

Conclusions:

The given sample of cement contains less than/ more than 10% by weight of material coarser than 90 micron sieve. Therefore it satisfies/ not satisfies the criterion as specified by IS code. Precautions: (Discuss about the precautions to be taken while conducting this experiment) 

 

Observation Table:

SR.NO	WEIGHT OF SAMPLE TAKEN (W) (in g.)	WEIGHT OF          RESIDUE  (R) (in g.)	%AGE OF           RESIDUE = (𝑅/ 𝑊) × 100	AVERAGE     % RESIDUE
1
2
3

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