Facts about Asphalt Paving and Road Striping Among materials used in the construction of road pavements, asphalt is the most sustainable, because of the following benefits: 1. It is smooth, so vehicles consume less fuel and produce lower emissions., 2. It is quiet, so expensive noise walls don’t need to be constructed., 3. It is safe, providing excellent gripping power., 4. It is durable, so that the road never needs to be removed and replaced., 5. It is also the most recycled material for road pavements. Asphalt is a mixed product of aggregates, binder and filler and is used for constructing and maintaining all kinds of roads, as well as parking and sport areas. In producing asphalt, about 5% of binder, which is commonly bitumen, and filler are used to mix with 95% of the aggregates, crushed rock, sand, gravel or slags, to produce a cohesive mixture. The following is the complete process for asphalt pavement installation: 1. The existing road surface material, whether it is asphalt, concrete or pavers, is removed using heavy machinery, such as bobcats, forklifts, front loaders, and dump trucks., 2. Then the debris-free surface is graded to ensure that water will run-off appropriately because the presence of water causes damage, like potholes, cracks and heaving, and, therefore, proper water drainage is constructed., 3. The sub base is prepared, which is a stable surface incorporating base thickness, compaction and stability, to support the new pavement., 4. After grading and compaction of the sub base, a proof roll, which involves driving a dumb truck loaded with 72,000 pounds row by row of the entire surface, to ensure the underlying surface is strong and ready to support the new asphalt., 5. If the proof roll finds soft areas in the sub base, necessary repairs are done by undercutting method, which involves digging down below the surface, 2 or 3 feet, and replacing the underlying soft clay or soil with stronger aggregate material., 6. Then the binder, which binds the asphalt, is added which is made of large aggregate mixed with oil., 7. As soon as the support structures on the surface are installed, the surface is added with a top layer of fresh asphalt., 8. Then the road contractors smooth the new asphalt to the butt joints, which are areas comprising old concrete or asphalt, in order to have a smooth continuity of a road pavement., 9. As soon as the asphalt and butt joints have been laid, the entire new asphalt pavement is smoothed and compacted, using a roller truck.
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Soon after the installation of the asphalt pavement is completed, road markings are done on the road using a device or material that can be painted on the road to provide direction or signs for drivers to observe to ensure their safety. Paints are commonly used for marking since it is cost-effective; however, markings that need to be visible during night time, so drivers can see the surface signs, make use of reflectorized paints.The 10 Best Resources For Services