Gravel road wikipedia - Search
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  2. Road surface - Wikipedia

     
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    What is the difference between a gravel road and a dirt road?Compared to a gravel road, a dirt road is not usually graded regularly to produce an enhanced camber to encourage rainwater to drain off the road, and drainage ditches at the sides may be absent. They are unlikely to have embankments through low-lying areas.
    en.wikipedia.org
    Where does gravel come from?Gravel is a loose aggregation of rock fragments that occurs naturally on Earth as a result of sedimentary and erosive geological processes .It is also produced in large quantities commercially as crushed
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    What type of gravel is used in road construction?The gravel used consists of varying amount of crushed stone, sand, and fines. Fines are silt or clay particles smaller than .075 millimetres (0.0030 in), which can act as a binder. Crushed stone, also called road metal, is used because gravel with fractured faces will stay in place better than rounded river pebbles.
    en.wikipedia.org
    What type of rock is gravel derived from?Most gravel is derived from disintegration of bedrock as it weathers. Quartz is the most common mineral found in gravel, as it is hard, chemically inert, and lacks cleavage planes along which the rock easily splits.
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  4. History of road transport - Wikipedia

    WebOutside cities, roads were dirt or gravel consisting of mud in the winter and dusty in the summer. Early organizers cited Europe where road

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    • 1. General - ROADEX Network

      Web. Most daily journeys on public roads are generally on paved roads but in the ROADEX area 1/3 of public roads are still gravel roads. The overall total length of gravel roads however in most countries is much longer than …

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    • Road - Simple English Wikipedia, the free encyclopedia

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    • Materials | National Site Materials Simi Valley, California