Expectations
The success of HIR is dependent on a good structural section and the adequacy of the selected treatment to restore the viscosity of the aged binder and mitigate the existing distress. In short: you cannot treat what you cannot reach.
The HIR processes are not meant to address structural failures of the pavement such as structural rutting or existing mixture instability. HIR is meant to treat non-load associated distresses and minor structural distresses that occur in the top 1-3 inches of the pavement structure and can slow the return of transverse or reflective cracking.
|
HIR |
Optimum |
Moderate
|
Reactive
|
|
Type of Distress |
Oxidation, poor ride quality, deformations, raveling or minor cracking |
Potholes, rutting, reflective cracking |
Transverse cracking, deep rutting, stripping |
|
Depth of Distress |
Within treatment depth |
Within 1-2 inches of treatment depth |
Beyond treatment depth |
|
Life Extension |
7-15 years |
7-10 years |
4-7 years |
EXAMPLES OF ROADS THAT HAVE BEEN TREATED WITH Hot In-Place Recycling OVER VARIOUS STAGES IN SERVICE LIFE:
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Dutch Ave, Hesston, KS Before HIR
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Dutch Ave, Hesston, KS During HIR
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Dutch Ave, Hesston, KS 2 Years After HIR
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US-77 Marion, CO., KS Before HIR
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US-77 Marion, CO., KS Before HIR
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US-77 Marion, CO., KS After HIR
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US-77 Marion, CO., KS 3 Years After HIR
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Estrella Pkwy, Before HIR
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Estrella Pkwy, Before HIR
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Estrella Pkwy, During HIR
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Estrella Pkwy, 5 Years After HIR
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