PARTICLE SIZE DISTRIBUTION TEST - SIEVE ANALYSIS

 PARTICLE SIZE DISTRIBUTION TEST - SIEVE ANALYSIS

AIM:

To determine the Particle Size Distribution of the Aggregate by Sieve Analysis.

APPARATUS REQUIRED:

1. Set of IS Sieve         

2. Weighing Balance

PROCEDURE:

1. The test sample is dried to a constant weight at a temperature of 110 ± 5oC and weighed.

2. The sample is sieved by using a set of IS Sieves for 5 minutes.

3. On completion of sieving, the material on each sieve is weighed.

4. Cumulative weight passing through each sieve is calculated as a percentage of the total sample weight.

5. Fineness modulus is obtained by adding cumulative percentage of aggregates retained on each sieve and dividing the sum by 100.

OBSERVATION:

Tabulation for Coarse Aggregate:

SI.No	Sieve Size	Weight Retained	Cumulative Weight Retained	Cumulative % Retained	Cumulative % Passing
1	80
2	40
3	20
4	10
5	4.75

Tabulation for Fine Aggregate:

SI.No	Sieve Size	Weight Retained	Cumulative Weight Retained	Cumulative % Retained	Cumulative % Passing
1	4.75
2	2.36
3	1.18
4	600µ
5	300µ
6	150µ
7	75µ

Note:

Acceptance value for coarse aggregate

SI. NO	IS SIEVE DESIGNATION	PERCENTAGE PASSING FOR SINGLE SIZED AGGREGATE OF NOMINAL SIZE
		63mm	40mm	20mm	16mm	12.5mm	10mm
1	80mm	100	-	-	-	-	-
2	63mm	85 – 100	100	-	-	-	-
3	40mm	0 – 30	85 – 100	100	-	-	-
4	20mm	0 - 5	0 – 20	85 – 100	100	-	-
5	16mm	-	-	-	85 – 100	100	-
6	12.5mm	-	-	-	-	85 – 100	100
7	10mm	0 - 5	0 – 5	0 – 20	0 – 30	0 – 45	85 – 100
8	4.75mm	-	-	0 – 5	0 - 5	0 - 10	0 – 20
9	2.36mm	-	-	-	-	-	0 – 5

SI. NO	IS SIEVE DESIGNATION	PERCENTAGE PASSING FOR GRADED AGGREGATE OF NOMINAL SIZE
		40mm	20mm	16mm	12.5mm
1	80mm	100	-	-	-
2	63mm	–	-	-	-
3	40mm	95 – 100	100	-	-
4	20mm	30 - 70	95 – 100	100	100
5	16mm	-	-	90 - 100	–
6	12.5mm	-	-	-	90 - 100
7	10mm	10 - 35	25 – 55	30 – 70	40 – 85
8	4.75mm	0 – 5	0 - 10	0 – 10	0 - 10
9	2.36mm	-	-	-	-

Acceptance value for Fine Aggregate

SI. NO	IS SIEVE DESIGNATION	PERCENTAGE PASSING FOR
		GRADING ZONE 1	GRADING ZONE 1	GRADING ZONE 3	GRADING ZONE 4
1	10mm	100	100	100	100
2	4.75mm	90 – 100	90 – 100	90 – 100	95 – 100
3	2.36mm	60 – 95	75 – 100	85 - 100	95 – 100
4	1.18mm	30 – 70	55 – 90	75 – 100	90 – 100
5	600 micron	15 – 34	35 – 59	60 - 79	80 -100
6	300 micron	5 – 20	8 – 30	12 – 40	15 – 50
7	150 micron	0 - 10	0 - 10	0 - 10	0 - 15

REFERENCE:

IS: 383 – 1970, IS: 2836 (PART - 1) – 1963.