Changing Air voids percentage:
We change the air voids percentage to check its
effects on the fatigue life and rut depth and plot those results on graph.
1. First of all we open mitch pave
2. Then we go to option no 4 (modify an existing) file
menu.
3. After in this menu we press 1 to change the initial
settings where we change file name and leave the rest as be then we press f1
key to save.
4. After pressing f1 we are now in the new menu which
is shown in the figure 3.4 and here we change the value of air voids. This is
highlighted in figure.
5. After that we press f1 again to save our changes
and this takes us back to modify and existing file menu.
6. Now we press 2 to modify material type.
7. We do not change anything in this menu and press f1
to go back to modify an existing data file menu.
8. Now we press 3 to go to the next menu which is
named as modify material properties here we also do not change anything we just
press f1 to go back to modify an existing file menu.
9. Now we press 4 to go to next menu named as modify
cross sections for computation we also do not change anything in this menu and
just press f1 to go back to modify an existing file menu.
10. There are no 5, 6 and 7 options too but our
concern is with no 7 which is go back to main menu so we press no 7 and go back
to main menu.
11. In main menu now we press 5 to perform analysis
12. A new menu opens showing results of every data we
changed.
13. Then we put this data on excel sheets to make a
graphical representation of our results.
One important thing to note is that we cannot see our
results on mitchpave again after closing so we have to capture a screen shot.
Figure: Change in Air Voids Percentage
Air Voids (%) Fatigue Life (ESALs)
3.5 45630000
4 33780000
4.5 25000000
5 25000000
Table 3.3
In case of Fatigue Life the difference between initial
and final Air voids is measured as 84.52%. final data shown in diagram.
Fig: results Of Air voids On Fatigue Life
Air Voids (%) Rut Depth (in)
3.5 0.1999
4 0.221
4.5 0.2482
5 0.2482
Table 3.4
In case of rut depth the results are shown in the
above table when Air Voids are increased from 3 to 5 the rut depth was also
increased by about 24.16%. data shown in diagram.
Graphs of air
Voids vs. Rut depth
Changing AC Modulus:
We change the value of Ac Modulus and check its effect
on the results of Fatigue life and rut depth. Then we plot these results on
graph and make a trend line.
1. First of all we open mitch pave
2. Then we go to option no 4 (modify an existing) file
menu.
3. After in this menu we press 1 to change the initial
settings where we change file name and leave the rest as be then we press f1
key to save.
4. After pressing f1 we are now in the new menu we
don’t change anything here and press f1to go back..
5. Now we press 2 to modify material type.
6. We do not change anything in this menu and press f1
to go back to modify an existing data file menu.
7. Now we press 3 to go to the next menu which is
named as modify material properties
8. In this menu we change the values of Ac Modulus as
shown in figure highlighted
9. Now we press f1 to save the changes and go back to
modify an existing file menu.
10. Now we press 4 to go to next menu named as modify
cross sections for computation we also do not change anything in this menu and
just press f1 to go back to modify an existing file menu.
11. There are no 5, 6 and 7 options too but our
concern is with no 7 which is go back to main menu so we press no 7 and go back
to main menu.
12. In main menu now we press 5 to perform analysis
13. A new menu opens showing results of every data we
changed.
14. Then we put this data on excel sheets to make a
graphical representation of our results.
One important thing to note is that we cannot see our
results on mitchpave again after closing so we have to capture a screen shot.
AC Modulus (psi) Fatigue Life (ESALs)
300000 23320000
350000 25000000
400000 26690000
450000 28320000
Table 3.5
In case of fatigue life the results are shown in the
above table when AC Modulus is increased from 300000 to 450000 the fatigue life
was also increased by about 1.05%. Final data results in diagram below.
 |
| Figure Graphical Representation of AC modulus vs fatigue life |
Figure Graphical Representation of AC modulus vs
fatigue life
AC Modulus (psi) Rut Depth (in)
300000 0.2493
350000 0.2482
400000 0.2474
450000 0.2467
Table 3.6
In case of rut depth the results are shown in the
above table when AC Modulus is increased from 300000 to 450000 the rut depth
was decreased by about 21.40%. Final results is look at the diagram below.
 |
| Graphical Representation of AC modulus vs rut depth |
: Graphical Representation of AC modulus vs rut depth
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