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2. Gravel road - Wikipedia

   en.wikipedia.org/wiki/Gravel_road

   This often causes problems if a gravel road is paved without adding sand and gravel sized stone to dilute the percentage of fines. [6] A gravel road is quite different from a 'gravel drive', popular as private driveways in the United Kingdom. This uses clean gravel consisting of uniform, rounded stones and small pebbles.

3. Resin-bound paving - Wikipedia

   en.wikipedia.org/wiki/Resin-bound_paving

   This may also mitigate the need for planning permission when installing a resin driveway, depending on jurisdiction, as they are permeable. Resin-bound systems incorporating 6-10mm dried aggregates and larger sizes are generally used as tree surrounds known as tree pits. These are a cost-effective and practical alternative to metal tree grilles ...

4. Gravel - Wikipedia

   en.wikipedia.org/wiki/Gravel

   It is widely used as a surfacing for roads and driveways, sometimes with tar applied over it. Crushed stone may be made from granite, limestone, dolomite, and other rocks. Also known as "crusher run", DGA (dense grade aggregate) QP (quarry process), and shoulder stone. [30] Crushed stone is distinguished from gravel by the U.S. Geological ...

5. Pavers (flooring) - Wikipedia

   en.wikipedia.org/wiki/Pavers_(flooring)

   Stone pavers are made of many materials including limestone, bluestone, basalt (such as that from The Palisades used in New York City), sandstone and granite. [19] Travertine is a durable, low-porous stone that stays cool in direct sunlight, making it a popular choice for pool-sides, patios, walkways and outdoor entertainment areas.

6. Road surface - Wikipedia

   en.wikipedia.org/wiki/Road_surface

   Gravel road in Namibia. Gravel is known to have been used extensively in the construction of roads by soldiers of the Roman Empire (see Roman road) but in 1998 a limestone-surfaced road, thought to date back to the Bronze Age, was found at Yarnton in Oxfordshire, Britain. [45] Applying gravel, or "metalling", has had two distinct usages in road ...

7. Subbase (pavement) - Wikipedia

   en.wikipedia.org/wiki/Subbase_(pavement)

   In the UK, the specification for aggregate used as a subbase in the construction of driveways and roads includes MOT Type 1 Stone. The thickness of subbase can range from 75 to 100 mm (3 to 4 in) for garden paths through 100 to 150 mm (4 to 6 in) for driveways and public footpaths, to 150 to 225 mm (6 to 9 in) for heavy used roads, and more for ...