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Table 2.6. Treatment Usage on PCC-Surfaced Roadways According to Pavement Condition
Pavement Distress
Surface Distressa
Treatment Smoothness Friction Noise Light Moderate Heavy
Concrete joint resealing Limited None Limited Extensive Moderate Limited
Concrete crack sealing Limited None Limited Extensive Moderate Limited
Diamond grinding Extensive Moderate Moderate Limited Limited Limited
Diamond grooving Moderate Extensive Limited Limited Limited Limited
Partial-depth concrete patching Moderate None Limited Moderate Extensive Moderate
Full-depth concrete patching Moderate Limited Limited Limited Extensive Extensive
Dowel bar retrofitting Moderate Limited Limited Limited Moderate Moderate
Ultra-thin bonded wearing course Extensive Moderate Limited Moderate Moderate Limited
Thin HMA overlay Moderate Moderate Limited Moderate Moderate Limited
Note: Extensive = Use by 66% of respondents; Moderate = 33% to 66% usage; Limited = <33% usage.
a
Spalling, various forms of cracking.
using each treatment was summarized, with the results shown thin PCC overlays on PCC pavements, were reportedly not
in Tables 2.7 and 2.8. In these tables, extensive treatment use used on either rural or urban high-traffic-volume roadways
in a climate region is understood as at least two-thirds of in deep-freeze environments. In other cases, such as use of
respondents in that region reporting using the treatment on ultra-thin whitetopping, limited use may be more likely attrib-
high-traffic-volume roadways. Moderate use is defined as uted to high cost or lack of local experience, rather than climate-
between one-third and two-thirds of respondents using the related performance issues.
treatment. Limited use is defined as less than one-third of
respondents reporting using that treatment.
Work Zone Duration
Although there is variability among the climate regions
Restrictions
regarding treatment usage, for the most part there is not a sig-
nificant difference between treatment use on rural versus The time available to apply a treatment is a practical consid-
urban high-traffic-volume roadways within a climate region. eration in treatment selection on high-traffic-volume road-
Two treatments, slurry seal on HMA-surfaced pavements and ways, as it dictates how much time is available to do the work.
Table 2.7. Preservation Treatment Use on High-Traffic-Volume HMA-Surfaced Roadways, by Climate Region
Microsurfacing Chip Seal
Climatic Crack Crack Slurry Single Multiple Single Multiple With
Region Fill Seal Seal Course Course Course Course Polymer
RURAL
Deep freeze Extensive Extensive None Moderate Moderate Extensive Extensive Extensive
Moderate freeze Extensive Extensive Moderate Extensive Moderate Moderate Limited Limited
No freeze Moderate Moderate Limited Moderate Limited Moderate Moderate Moderate
URBAN
Deep freeze Extensive Extensive None Moderate Moderate Moderate Moderate Moderate
Moderate freeze Extensive Extensive Moderate Extensive Extensive Moderate Limited Limited
No freeze Extensive Extensive Moderate Moderate Limited Moderate Moderate Moderate
Note: Extensive = Use by 66% of respondents; Moderate = 33% to 66% usage; Limited = <33% usage.
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