| 1. |
Partial depth repairs have become an effective way to extend the service life of concrete pavements in Minnesota. |
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True |
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False |
| 2. |
Which of the following material type is not used in the repairs? |
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Cementitious based |
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Sand based |
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Epoxy-based |
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Asphalt based |
| 3. |
Recent studies and guidelines on concrete pavement joint deterioration have reported that once concrete becomes saturated beyond a critical level (~85%), damage can occur within __________ freeze/thaw events. |
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1 to 2 |
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2 to 3 |
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3 to 4 |
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4 to 6 |
| 4. |
In addition to freeze/thaw durability and the retention of bond to the underlying pavement, some patch materials must also survive direct vehicular loading. |
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True |
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False |
| 5. |
During the October 2014 field assessment, a ____________ was used to test for the consistency of the tone within each patch area, with “hollow” sounds indicating compromised bonding of the patch material. |
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Ball-peen hammer |
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Tuning fork |
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Shovel |
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All the above |
| 6. |
Which of the following rating describes the patch condition as ‘Good condition, some random cracks, limited material missing’? |
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1 |
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2 |
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3 |
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4 |
| 7. |
After performance of the patches after 3 years of Minnesota climate and interstate traffic, overall, __________ patches remained in good serviceable condition as of October 2014. |
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40% |
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59% |
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65% |
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72% |
| 8. |
Patches lying in wheel paths are subject more often to direct tire loads, as well as the opening and closing of the transverse joints. |
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True |
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False |
| 9. |
Presence of _____________ can have a profound effect on the moisture condition of the concrete as well. |
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Debris |
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Deicing chemicals |
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Both A & B |
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None of the above |
| 10. |
After performance of the patches after 3 years of Minnesota climate and interstate traffic, the location of the patch did not seem to affect the performance significantly. |
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True |
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False |
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