Materials selection for concrete overlays : the final report Page: 52
xviii, 192 p. : col. ill. ; 28 cm.View a full description of this report.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
U
C
U-
E
U100%
80%
60%
40%
20%
0%Feb-02
SMay-03
-- Dec-090 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Crack Spacing (ft)
Figure 3.16: Crack spacing distribution
Table 3.11 summarizes the crack spacing results for the three surveys. It can be seen that
the crack spacings are getting smaller and that the variability has increased over time. With the
two previous surveys occurring in the early stages of the pavement's life, and the current survey
being performed more than six years after the last one, it can be concluded that the crack spacing
has stabilized.
Table 3.11: Summary of crack spacing results
Feb-02 May-03 Dec-09
Crack Spacing (ft) 12.2 9.2 7.8
Standard Deviation (ft) 1.3 1.3 1.6
C. of Variation (%) 11.4 14.6 21.2
A comparison of the changes of crack spacing with time can be seen in Figure 3.17, in
which the average crack spacings by station are plotted for the three surveys.20
~15
c0
0,
,-,10
li5Fe -20 2
r-ay-2003
--- Dec-091 10 13 1 19 22 ..2E 2 1 3 7 0 3 E2
Station
Figure 3.17. Average crack spacing with time by station52
A . .
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Kim, Dong H.; Fowler, David W.; Ferron, Raissa P.; Trevino, Manuel M. & Whitney, David P. Materials selection for concrete overlays : the final report, report, July 2012; Austin, Texas. (https://texashistory.unt.edu/ark:/67531/metapth303706/m1/72/: accessed July 17, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.