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Nicolson pavement, alternatively spelled "Nicholson" and denominated wooden block pavement and wood block pavement, is a road surface material consisting of wooden blocks. Samuel Nicolson invented it in the mid-19th century. [1] Wooden block pavement has since become unfavored because of its poor surface quality and high cost of maintenance.
The alley is 530 feet (160 m) long and composed of wooden blocks roughly 6 to 10 inches (150 to 250 mm) long and 4 inches (100 mm) wide. This wood block technique is a derivative of Nicholson paving, a more durable method of wooden paving which replaced plank paving in many U.S. cities in the nineteenth century.
Usually constructed of concrete, pavers, brick, stone, or asphalt, it is designed for pedestrians. A sidewalk is normally higher than the roadway , and separated from it by a curb . There may also be a planted strip between the sidewalk and the roadway and between the roadway and the adjacent land.
Pavers (or paviours), generally in the form of pre-cast concrete blocks, are often used for aesthetic purposes, or sometimes at port facilities that see long-duration pavement loading. Pavers are rarely used in areas that see high-speed vehicle traffic.
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Fly ash bricks. Fly ash brick (FAB) is a building material, specifically masonry units, containing class C or class F fly ash and water. Compressed at 28 MPa (272 atm) and cured for 24 hours in a 66 °C steam bath, then toughened with an air entrainment agent, the bricks can last for more than 100 freeze-thaw cycles.
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