Civil Engineering Reference
In-Depth Information
10
8
8
6
6
4
4
2
0
2
3.5
4.0
4.5
5.0
5.5
6.0
6.5
3.5
4.0
4.5
5.0
5.5
6.0
6.5
Percent asphalt
Percent asphalt
25
2.42
20
2.40
15
2.38
10
2.36
5
0
2.34
3.5
4.0
4.5
5.0
5.5
6.0
6.5
3.5
4.0
4.5
5.0
5.5
6.0
6.5
Percent asphalt
Percent asphalt
110
16.5
16.0
90
15.5
15.0
70
14.5
14.0
50
3.5
4.0
4.5
5.0
5.5
6.0
6.5
3.5
4.0
4.5
5.0
5.5
6.0
6.5
Percent asphalt
Percent asphalt
FIGURE SP9.6
■
9.9.6
Hveem Method of Mix Design
The basic steps required for performing Hveem mix design are the following
(The Asphalt Institute 1995):
1. aggregate evaluation
2. asphalt cement evaluation
3. evaluation of centrifuge kerosene equivalent of fine aggregate
4. evaluation of surface capacity of coarse aggregate
5. estimation of optimum asphalt content
6. specimen preparation
7. measurement of the Hveem stability
8. density and voids analysis
9. determination of design asphalt content.
The evaluation of aggregate and asphalt cement is performed as in the
Marshall method of mix design. The Hveem method requires measuring
Search WWH ::
Custom Search