What is AC6 surface course?
The surface course is the layer that is in direct contact with the traffic load and its smooth surface improves traction and reduces skidding. Our surface courses include: AC6 dense surf 100/150 for lighter traffic areas such as footpaths and low stress roads such as access roads. speed roads or access roads.
What is AC10 tarmac?
AC10 is an “asphalt concrete” with a maximum stone size of 10mm. It comprises of crushed rock (or recycled aggregates) of 10mm and smaller bound together with bitumen (the “binder”). It is suitable for relatively low stress areas (estate roads and of course cycle tracks).
What is the difference between binder course and wearing course?
The wearing course is the upper layer in roadway, airfield, and dockyard construction. The wearing course is typically placed on the binder course which is then laid on the base course, which is normally placed on the subbase, which rests on the subgrade.
How thick should driveway Tarmac be?
2 to 3 inches
The best layer of thickness is usually 2 to 3 inches. The tarmac will then be laid, and compacted with a heavy roller and formed at a 45 degree angle at the edges.
What is HDM material?
HDM invented and commercialized a revolutionary fabric material called, SuperFabric®, which is abrasion, cut, puncture, and flame resistant. SuperFabric® brand material is used by companies with brands that include 3M, Timberland, North Face, Scott Sports, Wolverine, Rocky, and Samsonite.
Are there different grades tarmac?
As a sweeping generalisation, the harder grades (70pen or less), are used as ‘asphalts’, while the softer grades (100 pen or more, are used as binders for bitumen macadams (bitmac). Bitumens of different pen grades can be blended to create binders with a specific pen grade.
What is 6mm SMA tarmac?
ULTIDRIVE is a long-lasting asphalt for driveways and car parks. The dense, crack resisting finish prevents frost damage to driveways in cold weather. Available as a 6mm or 10mm SMA in black or red, ULTIDRIVE incorporates a complementary aggregate for longer lasting colour that resists surface wear.
What is the minimum thickness of wearing course?
The thickness of base course must be great enough to reduce the load capacity on sub-grade and Subbase courses. The minimum base course thickness recommended is 100 mm.
What is the difference between AC6 and AC10 dense surf 100/150?
AC6 dense surf 100/150 for lighter traffic areas such as footpaths and low stress roads such as access roads. speed roads or access roads. AC10 dense surf 100/150 and AC14 dense surf 100/150 is suitable for low speed roads and those with light traffic.
What is AC 20 dense binder 100/150?
AC 20 dense binder 100/150 is normally used between the surface course and the base course and is suitable for footpaths and light traffic areas. The base course is immediately beneath the surface or binder course and provides extra load distribution and sub-surface drainage. Our base course includes:
What are coarse aggregates for surface courses?
Coarse Aggregates for Surface Courses Aggregates for use in surface courses ar e the point of contact between th e vehicle tyre and road surface, accordingly they shall be of a single rock type and source. In addition they shall comply with the PSV and AAV requirements stated in Appendix 7/1.
What core sizes are acceptable for surface course materials?
For surface course materials, cores of 100mm diameter are acceptable. The cores shall be extracted outside of the wheel tracks for the surface course layer. The core log shall note if the site is confined. The compaction and compaction control for method compaction shall be as specified below unless otherwise specified in Appendix 7/1.