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Road Surface Repair
Enviado por dxbdave em qui, 2009-12-31 19:04
Road surfaces may be repaired by a method known as "Chip Seal" or "Seal Coat". This is an application laid directly on top of an existing road that needs repair, and results in a surface rougher than the original pavement. This method is between 75% and 90% cheaper than a complete re-surfacing, and extends the surface life by 5 to 7 years. The problem is in our region these repairs have resulted in surfaces that are either uncomfortable for cycling, or in some cases, make cycling totally impossible. Has anyone experienced this type of repair, if so, where and if cycling was not badly affected, please advise the name of the government agency responsible so I can try and get a copy of their specifications. For information on this process please see http://www.fs.fed.us/eng/pubs/html/99771201/99771201.htm#CHIP If you have experienced adverse chip seal, I would also like to hear from you with the location, and what, if any, improvements may have been made after cyclists complained about the rough surface. Many thanks and Happy New Year to all!!! See us on www.bicycletrek.org
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chipseal
From what I have read and know personally, chip seal can be a term with differing meanings. What you describe (chip over a prior hard surface) seems to be one that would be most problematical for cycling.
Our area has many roads with "oil and chip" surfacing which can be quite nice riding. This allows more rural roads to have a much better surface than gravel even though it is less smooth than asphalt. Admittedly, however, our area tends to use a finer chip (CA10) than I have heard of elsewhere. The description of roads in other areas have included what sounds like 1.5 to 2 inch rock which would be a very different experience.
Due to budget issues lately I have seen patched areas use a heavier gravel, which can be rougher. A bigger problem can be on extremely hot days having the oil percolate to the surface, or, newly applied oil and chip messing up the bike.
Living and regularly riding on and oil and chip roads works well for me so I would advise awareness of the type of chip seal used prior to discounting the use of these roads.
I also live near and ride regularly on a "screened limestone" surfaced bike trail (Tunnel Hill). This provides a usable link between the TransAm and the Great Rivers ACA routes. However, some information refers to this as a gravel surface...I've ridden gravel - it's not the same, so I would also advise the same understanding of the local meaning of terms.