Wiki source code of Gravel
Last modified by Roelof Zwaan on 2021/09/30 15:18
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9 | Gravel is a granular sedimentary rock. The grains need to have a diameter of more than 2 mm and less than 63 mm. De grains of this rock are coarser than those of [[sand>>doc:Environmental Surveys.Rock types.Sedimenten.Sand.WebHome]] and less coarse than those of [[pebbles>>doc:Environmental Surveys.Rock types.Sedimenten.Pebbles.WebHome]] and [[boulders>>doc:Environmental Surveys.Rock types.Sedimenten.Boulders.WebHome]]. | ||
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13 | = Sub-categories = | ||
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15 | Within the grainsize gravel there are some subcategories to characterize the types of gravel. Following table describes them. | ||
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18 | |=Type|=Grain size | ||
19 | |Coarse gravel|> 20 - ≤ 63 mm | ||
20 | |Medium coarse gravel|> 6.3 - ≤ 20 mm | ||
21 | |Fine gravel|> 2.0 - ≤ 6.3 mm | ||
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23 | = References = | ||
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25 | * NEN-EN-ISO 14688-1:2019 | ||
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32 | = Gravel = | ||
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34 | [[image:Gravel.jpg||alt="image.jpg"]] | ||
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37 | |=(% scope="row" %)Image|[[Gravel>>url:https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.kurtz-bros.com%2Flandscape-supplies%2Fgravel%2F34-gravel%2F&psig=AOvVaw1HOO3ay1HNQQVkKDXved5L&ust=1607177561668000&source=images&cd=vfe&ved=0CAIQjRxqFwoTCMi-npLBtO0CFQAAAAAdAAAAABAb]] | ||
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42 | **Contents** | ||
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44 | {{toc/}} | ||
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