|
|
| |
|
|
| |
| Economics |
| |
| In order to fairly assess the comparative cost involved in undertaking repairs using BRP Road Patch against the cost involved using traditional repair methods the following aspects should be considered: |
| |
- Amount of preparatory work necessary, e.g. with BRP Road Patch it is not necessary to box out potholes because the hole is back-filled up to the existing surface level and surface cracking can be resealed without foundation excavations.
- Cost of the seal.
- Amount of wastage.
- Transport costs.
- Equipment costs.
- Productivity.
- Expected service life of the repair.
- BRP Road Patch will provide at least a five year service life with many existing repairs still in service after 12 years.
- Texturising of the asphalt repair to match surrounding chip seal.
|
| |
| BRP Road Patch Application Procedure |
| |
- Ideally road surface temperature should be 10 degrees Celsius and rising
- Evenly apply emulsion to surface. If temperature is below 10 degrees Celsius, also treat paper with emulsion.
- Wait for emulsion to "break".
- Place in position paperside down, do not overlap, butt edges carefully at joints.
- When on site, refrain from placing product aggregate side down on the road surface for extended periods, particularly in elevated temperatures.
|
| |
| Storage |
| |
- Store BRP Road Patch flat on a level, dry surface.
- Store paper-side downwards.
- Store out of sunlight and water.
- If stored in this manner, the product will store for at least nine years.
|
| |
| Materials and Equipment Requirements |
| |
The only materials and equipment required for all of the above applications are as follows:
- Stable grade anionic 60% or 65% cationic emulsion or local equivalent.
- Broom
- Chalk
- Straight Edge
- Block brush or similar for application of emulsion
- Tape Measure
- Knife
|
| |
| Important Notes |
| |
- Place emulsion tack coat sparingly (0,75L/m²) ensuring that the entire area is covered and that there are no pools of emulsion.
- Allow emulsion to break completely.
- Do not remove paper-backing.
|
| |
| Causes of Surface Failure |
| |
As road foundation layers age, they experience progressively more movement which results in cracking of the road surface and subsequent ingress of moisture, causing pumping of fine material and further deterioration of the foundation layers.
To retard this deterioration, a flexible waterproof repair seal is needed to absorb movement in the foundation layers and, by so doing, ensure an extended service life of the road.
Repairing with conventional materials that characteristically harden and brittle will not provide a medium to long-term solution and will result in repeated repairs to the same area. |
|
| |
|
|
|
