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The wearing course, also known as a friction course or surface course, is the upper layer in roadway, airfield, and dockyard construction. The term 'surface course' is sometimes used slightly different, to describe very thin surface layers such as chip seal. In rigid pavements the upper layer is a portland cement concrete slab.
Surface Preparation: Ensure the concrete surface is clean and free of debris, oil, surface coatings and other contaminants. Application: Apply Ashford Formula with a low-pressure, high-volume sprayer at 200 ft 2 /gal (5 m 2 /L), creating a flood coat. Agitate the surface with fine-bristled brooms to help penetration.
Asphalt batch mix plant A machine laying asphalt concrete, fed from a dump truck. Asphalt concrete (commonly called asphalt, [1] blacktop, or pavement in North America, and tarmac or bitumen macadam in the United Kingdom and the Republic of Ireland) is a composite material commonly used to surface roads, parking lots, airports, and the core of embankment dams. [2]
Diamond grinding is a pavement preservation technique that corrects a variety of surface imperfections on both concrete and asphalt concrete pavements. Most often utilized on concrete pavement, diamond grinding is typically performed in conjunction with other concrete pavement preservation (CPP) techniques such as road slab stabilization, full- and partial-depth repair, dowel bar retrofit ...
A recent study was conducted that shows that diamond grinding is an effective means of extending the service life of concrete by imparting a smooth pavement surface with desirable surface texture. The process can also be used to address faulting at joints or cracks, roughness, polished concrete surfaces exhibiting inadequate macrotexture, wheel ...
Chipseal (also chip seal or chip and seal) is a pavement surface treatment that combines one or more layers of asphalt with one or more layers of fine aggregate. In the United States, chipseals are typically used on rural roads carrying lower traffic volumes, and the process is often referred to as asphaltic surface treatment.