WHAT IS SIEVE ANALYSIS TEST ??? WHAT IS THE PROCEDURE FOR SIEVE ANALYSIS TEST???

SIEVE ANALYSIS TEST

For assessing particle size distribution of granular material by allowing the material to pass-through

a series of sieves of progressively smaller mesh size and weighing the amount that is stopped by each

sieve as fraction of the whole mass. this procedure is called "SIEVE ANALYSIS TEST" it is also

called GRADATION TEST.sieve analysis is important for analyzing materials because particle size

distribution can affect a wide range of properties, such as the strength of concrete, solubility of 

mixture, surface area properties, etc.

PROCEDURE FOR SIEVE ANALYSIS TEST

  This procedure is applicable for checking properties of aggregate like   

   Fineness modulus, grading & zone of fine aggregates.

1)   Apparatus:  

a)    IS Sieves (40mm, 20mm, 10mm, 4.75mm 2.36mm, 1.18mm  0.6mm, 0.3mm, 0.15mm)

b)    balance pan, 

c)    weigh balance 10kg Capacity, Standard Weights. 

2)   Material   :   Dry aggregate samples.

      PROCEDURE

      Conduct quartering for sample preparation according to procedure

      as shown below i.e. divide materials into 4 parts and select diagonally

      opposite parts. Take following quantity of materials for quartering.

FAII= 6kg  + - 200 grams

CAI= 5 kg + - 200 grams

CAII= 5 kg + -  200 grams.

1)     Take dry sample of FaII 1.5 Kg, CAI  = 1.2 kg., CAII  = 1.2 Kg

         ( all + - 100 grams )  for sieve analysis and start sieving.

2)     Continue sieving till material stops falling through sieve.

3)     Weigh samples retained on each sieve.

4)     Calculate Cumulative Percent Passing, Cumulative Percent

        Retained and Fineness Modulus (FM) using the table given below.

5)     FM  =   Addition of all values of Cum. Percent Retained / 100

       Sieve Analysis

IS Sieve Size(mm)	Wt held	Wt. passed	% passing	% held.
40 mm
20 mm
10 mm
4.75 mm
2.36 mm
1.18 mm
0.6 mm
0.3 mm
0.15 mm
Balance			Σ=
Total			F.M.

Sample Calculations

Building:		Material: Fall	Sample:	1500 gm	Date:
Sr No	Sieve Size(mm)	Wt. Held	Wt. Passing	% Passing	% Held
1	40mm	0	1500	100	0
2	20mm	0	1500	100	0
3	10mm	5	1495	100	0
4	4.8mm	150	1345	90	10
5	2.4mm	200	1145	76	24
6	1.2mm	420	725	48	52
7	0.6mm	280	445	30	70
8	0.3mm	405	40	3	97
9	0.15mm	35	5	0	100
	Balance	5		Σ=	353
	Total	1500		F.M.	3.53

 

6)  Observation/Conclusion   :        

     Fineness Modulus of aggregate as per Sample calculation     =     3.53.

        Zone of Fine aggregate =    2.