1. Given the following two aggregate gradations shown in Table 1. plot individually on a semi-log scale and determine which ASTM C33 size number is appropriate for each. following chaum in Tabl
1. Given the following two aggregate gradations shown in Table 1. plot individually on a semi-log scale and determine which ASTM C33 size number is appropriate for each. following chaum in Tabl
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![45
1.
2.
Given the following two aggregate gradations shown in Table 1. plot individually on a
semi-log scale and determine which ASTM C33 size number is appropriate for each.
Give the following two aggregate gradations shown in Table 1, determine the best
combined aggregate gradation using a 45 power curve. Include a neat, well-organized
spreadsheet with at least three possible combinations in addition to the original gradations and
state which combination you think is the most well-graded.
Table 1. Aggregates for blending
Sieve
1 in.
% in.
½ in.
3/8 in.
#4
#8
# 16
# 30
# 50
# 100
Percent Passing
100
80
60
80
40
60
20
40
20
0
Percent Passing
100
Aggregate 1 (%
passing)
0
100
100
68
41
6
3.0
2.3
2.1
2.0
1.9
Aggregate 2 (% passing)
100
100
100
100
99
93
76
2
3
Sieve Size Raised to 0.45 Power
Figure 1. Basis of 0.45 Power Chart (Source: Asphalt Institute SP-2)
45
14
1
Example:
4.75 mm sieve plots at (4.75) 0.45 = 2.02
OREK) ۹:۰۰ م | 0.5ك.ب/تا
max
size
-maximum density graciation
0
0 075 3 6 1.18 2.36 4.75 9.5 12.5 19.0
Sieve Size, mm, Rased to 0.45 Power
Figure 2. Maximum Density Gradation for 19mm Maximum Size (Source: Asphalt Institute
SP-2)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F41879cc4-65c2-4edc-bf63-85018c7adad6%2Fa99ec396-4d1b-4c23-8214-3841540ba805%2Febk78c_processed.jpeg&w=3840&q=75)
Transcribed Image Text:45
1.
2.
Given the following two aggregate gradations shown in Table 1. plot individually on a
semi-log scale and determine which ASTM C33 size number is appropriate for each.
Give the following two aggregate gradations shown in Table 1, determine the best
combined aggregate gradation using a 45 power curve. Include a neat, well-organized
spreadsheet with at least three possible combinations in addition to the original gradations and
state which combination you think is the most well-graded.
Table 1. Aggregates for blending
Sieve
1 in.
% in.
½ in.
3/8 in.
#4
#8
# 16
# 30
# 50
# 100
Percent Passing
100
80
60
80
40
60
20
40
20
0
Percent Passing
100
Aggregate 1 (%
passing)
0
100
100
68
41
6
3.0
2.3
2.1
2.0
1.9
Aggregate 2 (% passing)
100
100
100
100
99
93
76
2
3
Sieve Size Raised to 0.45 Power
Figure 1. Basis of 0.45 Power Chart (Source: Asphalt Institute SP-2)
45
14
1
Example:
4.75 mm sieve plots at (4.75) 0.45 = 2.02
OREK) ۹:۰۰ م | 0.5ك.ب/تا
max
size
-maximum density graciation
0
0 075 3 6 1.18 2.36 4.75 9.5 12.5 19.0
Sieve Size, mm, Rased to 0.45 Power
Figure 2. Maximum Density Gradation for 19mm Maximum Size (Source: Asphalt Institute
SP-2)
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