Week 14 - Asphalt Works continue & Demobilisation Starts
We had a good spell of fine weather, allowing us to complete nearly a third of the runway resurfacing. The design calls for the removal of the existing chip-sealed top surface. We use a milling machine that controls the depth and maintains a constant level of approx 30mm. The "millings" are spread on a dirt track parallel to the runway near the work area. This provides us with an easily accessible dump site for a waste product. The upside of the millings is that they are spread and compacted to form a reasonably surfaced road, which means vehicles don't have to travel along the runway. Another unscheduled flight N349CL Cessna 700 Citation Longitude Once the surface is cleaned off and rolled, a tack coat of emulsion is sprayed on, and a light coating of the chip is placed. This provides a binding layer for the asphalt to the basecourse layer below. Once the chip surface is rolled, the paving machine places a "mat" of asphalt approximately 30mm thick. A fabric mes...