Question

Calculate the specific gravity values (dry bulk, SSD, and apparent) and the absorption of the fine aggregate. 5.18 Referring to ASTM specification C33 (Table 5.5), what are the maximum sieve, size and the nominal maximum sieve size (traditional definition) for each of the standard sizes Numbers 357, 57, and 8? 5.19 Calculate the sieve analysis shown in Table P5.19 and plot on a semilog grada tion paper. What is the maximum size? What is the nominal maximum size? TABLE P5.19 Sieve Size 25 mm (1 in.) 9.5 mm (3/8 in. 4.75 mm (No. 4 2.00 mm (No. 10 0.425 mm (No. 40 0.075 mm NO. 200 Amount -Cumulative Amount Cumulative Percent Porcent Retained, g Retained, g Retained Passing 0 47.1 239.4 176.3

5.19

Answer 1

Ans) We know, cumulative retained = Sum of all retained weight till current sieve  

Cumulative retained percent = (Weight on sieve/ Total weight) x 100

Percent passing = 100 - cumulative percent retained

    Following is a required sieve analysis,

Sieve size (mm)	Amount retained (gm)	Cumulative amount retained (gm)	Cumulative percent retained	Peercent passing
25	0	0	0	100
9.5	47.1	47.1	7.37	92.63
4.75	239.4	286.5	40.15	59.85
2	176.5	463	72.48	27.52
0.425	92.7	555.7	87	13
0.075	73.5	629.2	98.50	1.50
Pan	9.6	638.8	100	0

Hence, following is a required plot :

Now,we know the smallest sieve through which 100% of particles passes is maximum aggregate size, So, according to given sieve analysis, maximum aggregate size = 25 mm

Percent passing 0.01 10 Particle size (mm)

Also, the sieve through which more than 90% of particles passes is nominal maximum aggregate size, So, according to given sieve analysis, nominal maximum aggregate size = 9.5 mm