runway pavement design
runway pavement design
(OP)
i am looking for suggestions on how to rehabilitate a runway.
the project has an existing runway which is in disrepair. meaning there are many potholes and drainage channels throughout due to the high level of rain. the current pavement is onsite crushed coral compacted and covered with a sprayed on soil cement. this cement spray does not last long and needs to be done too frequently.
the traffic would be 1-2 planes per month up to c-130 size.
the location is very remote. AC or concrete pavement is not an option.
we would like to use the onsite coral as base where the elevations are low. the subgrade is very dense coral.
the main problem is the wear and tear of the wearing surface. and maintenance of it.
any suggestions of a wearing surface that would be for long term use would be appreciated. tentatively we are planning a soil cement mixed with the onsite coral several inches. perhaps a cement treated base (CTB)as the surface?
thanks
the project has an existing runway which is in disrepair. meaning there are many potholes and drainage channels throughout due to the high level of rain. the current pavement is onsite crushed coral compacted and covered with a sprayed on soil cement. this cement spray does not last long and needs to be done too frequently.
the traffic would be 1-2 planes per month up to c-130 size.
the location is very remote. AC or concrete pavement is not an option.
we would like to use the onsite coral as base where the elevations are low. the subgrade is very dense coral.
the main problem is the wear and tear of the wearing surface. and maintenance of it.
any suggestions of a wearing surface that would be for long term use would be appreciated. tentatively we are planning a soil cement mixed with the onsite coral several inches. perhaps a cement treated base (CTB)as the surface?
thanks





RE: runway pavement design
Do a soil-cement mix design to get as much as you can out of the strength parameters....should be able to get in the 600psi range without too much difficulty. The coral is calcareous and will help the cement reactivity.
RE: runway pavement design
RE: runway pavement design
yes the bearing and strength of the soil is not really the issue. just the protection of the surface from loose gravels and erosion.
how long could we expect the sprayed asphalt to last under these conditions? right now the sprayed on product in use needs to be maintained every year. this is too often considering the location and difficulty of bringing in the product.
RE: runway pavement design
The short answer - if an asphalt product will get good penetration in your coral base, you can expect that you can get years of use from a properly applied asphalt product. Cutbacks will work best, and if you can count on a good 24-48 hours rain-free, sunny days, for cure time, environmental risks are minimized.