Sieve Size 3/4 in. (19 mm) 3/8 in. (9.5 mm) No. 4 (4.25 mm) No. 10 (2 mm) No. 40 (0.425 mm) No. 200 (0.075 mm) A 100 80 50 43 20 4 Percent Passing by Weight B 98 76 45 33 30 8 Required Mix 96 to 100 65 to 80 40 to 55 35 to 40 15 to 35 5 to 8
Sieve Size 3/4 in. (19 mm) 3/8 in. (9.5 mm) No. 4 (4.25 mm) No. 10 (2 mm) No. 40 (0.425 mm) No. 200 (0.075 mm) A 100 80 50 43 20 4 Percent Passing by Weight B 98 76 45 33 30 8 Required Mix 96 to 100 65 to 80 40 to 55 35 to 40 15 to 35 5 to 8
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The following table shows the gradation of two aggregates A and B which are to
be blended to produce an acceptable aggregate for use in manufacturing asphalt
concrete for highway pavement construction. If the required limits of gradation for
asphalt concrete are shown in the table below, determine a suitable ratio for
blending aggregates A and B to obtain the acceptable combined aggregate.
Transcribed Image Text:Sieve Size
3/4 in. (19 mm)
3/8 in. (9.5 mm)
No. 4 (4.25 mm)
No. 10 (2 mm)
No. 40 (0.425 mm)
No. 200 (0.075 mm)
A
100
80
50
43
20
4
Percent Passing by Weight
B
98
76
45
33
30
8
Required
Mix
96 to 100
65 to 80
40 to 55
35 to 40
15 to 35
5 to 8
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