63 content, while the lowest of VFWA score was come from crumb rubber 0 with 4.5
asphalt content.
Figure 4.31. VFWA
In terms of VFWA test, the result of all of crumb rubber percentages were not different significantly because the result was up and down not inline with the add of asphalt content
and crumb rubber. Then, based on the result, only one mixture did not meet the requirement of Bina Marga 2010.
4.2.4 Void in Mixture VIM
The result of VIM was obtained from average of VITM. VITM = 100-100bulk specific gravitytheory of compation as mentioned in Formula 2.5. Then the result of VITM from
sample A, B, C were averaged to get VIM score. The detail sample of the calculation for 4.5 asphalt content mixture for 0 crumb rubber is as follow:
VITM for Sample A=100-1002.462.59 = 5.34 VITM for Sample B=100-1002.422.59 = 6.64
VITM for Sample C=100-1002.432.59 = 6.34 VIM CR 0 = 5.34 + 6.64 + 6.34 : 3 = 6.11
VIM Score Of Crumb Rubber 3 VITM for Sample A = 100-1002.542.59 = 2.24
10 20
30 40
50 60
70 80
90
4,5 5
5,5 6
6,5 VF
WA
Asphalt Content
3 4
5
min 65
commit to user
64 VITM Sample B = 100-1002.472.59 = 4.64
VITM Sample C = 100-1002.422.59 = 6.54 VIM CR 3 = 2.24+4.64+6.54 : 3 = 4.47
VIM Score of Crumb Rubber 4 VITM Sample A = 100-1002.402.59 = 7.46
VITM Sample B = 100-1002.572.59 = 0.94 VITM Sample C = 100-1002.552.59 = 1.80
VIM CR 4 = 7.46+0.94+1.80 : 3 = 3.40 VIM Score of Crumb Rubber 5
VITM Sample A = 100-1002.462.59 = 5.37 VITM Sample B = 100-1002.432.59 = 6.52
VITM Sample C = 100-1002.652.59 = 2.08 Vim CR 5 = 5.37+6.52+2.08 : 3 = 3.27
Void in Mixture VIM of the research is presented in Table 4.11
TABLE 4.11.VIM Test
Asphalt Content VIM
VIM VIM
VIM CR 0
CR 3 CR 4
CR 5 4,5
6,11 4,47
3,40 3,27
5,0 5,29
4,15 4,25
3,40 5,5
4,98 4,24
5,43 4,90
6,0 4,75
3,52 3,44
4,65 6,5
4,78 3,86
3,10 3,87
Specification 3.5-5
3.5-5 3.5-5
3.5-5
commit to user
65 Based on Table 4.11, the score of VIM was lower inline with the added of Crumb Rubber.
Then, the added of Asphalt Content also decreased the score of VIM. As we can see on formula 2.5
Based on Bina Marga 2010 the score of VIM test should be on 3.5 to 5. Therefore, the score of VIM that did not meet the requirement were CR 0 with 4.5 and 5.0 Asphalt
Content; CR4 with 5.5, 6 and 6.5 Asphalt Content; CR 5 with 4.5. Then, Figure 4.32 will present about VIM test of crumb rubber added and several asphalt
content level.
Figure 4.32. VIM Test
Based on the Figure 4.32, it can be seen that the crumb rubber added of 0 showed the highest score for VIM test on 4.5 of asphalt content, then the second place was come from
4 of crumb rubber content. On the other hand, the lowest result of VIM test was come from 3 of crumb rubber.
4.2.5 Marshall Quotient MQ
