Pavement markers can be installed using either epoxy or bituminous adhesive.
For small jobs (a few markers) a two part epoxy can be used to adhere the markers
to the pavement.
For larger jobs, hot bituminous is much more cost effective. It is heated in a melter
and poured onto the pavement, then the marker is placed on top of the hot
bituminous and allowed to harden.
Placement of Raised Pavement Markers . Parallel slots shall be cut into the pavement for installing RPM castings. Residue or loose material resulting from the cutting operation shall be removed from the pavement. The RPM casting shall be installed within 24 hrs after the slots are cut into the pavement. On recently resurfaced roadways RPM placement may commence as soon as the pavement markings for that section are completed and dry.
The RPM casting shall be free of dirt, dust, oil, grease, rust, moisture, or any foreign matter which will impair adhesion to the pavement. The Contractor shall clean contaminated castings by sandblasting or other means approved by the Engineer.
The pavement surface temperature and the ambient air temperature at the time of RPM placement shall be not less than 5 C (40 F). Both parts of the RPM casting adhesive shall be heated to 38 C +/- 5º C (100 F +/- 10 F) during installation when the pavement surface or ambient air temperature is between 5 C and 10 C (40 F and 50 F). RPMs shall not be installed if the pavement surface is wet.
|
Ambient Air Temperature |
Minimum Period Protected from Traffic (minutes) | |
| C | (F) | |
| 38 | (100) | 15 |
| 32 | (90) | 20 |
| 27 | (80) | 25 |
| 21 | (70) | 30 |
| 16 | (60) | 35 |
| 10 | (50) | 45 |
| 5 | (40) | 60 |
| no application below 5C (40 F) | ||
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