Asphalt Thin Surfacing
Asphalt thin surfacing are used as cost-effective thin surfacings or re-sealing layers with enhanced long-term friction/ skid resistance and sealing properties.
Using thin surfacing for road paving is only possible to a certain degree that allows for a predetermined amount of deterioration before resurfacing is needed.
More important than the thickness of the asphalt on roads is the material used. As a general rule of thumb, for main roads that see a lot of traffic, the rocks in the asphalt mix are of bigger size then they are for pedestrian roads, for example.
This bigger rocks lead to higher durability, but also look less attractive closer, something that is not typically a problem with highways.
New technological advancements in asphalt technology are pushing the durability up for asphalt products, which also means the asphalt on roads can be laid out thinner.
The thinner asphalt is the less it will be used, and thus leading to smaller costs for the constructor and purchaser of asphalt paving.
There are also something called Ultra-Thin Friction Courses asphalt.
Ultra-thin friction courses (UTFC’s) are defined as a special group of open to gap-graded asphalt mixes which generally have less than 22 to 28% of aggregates passing the 2.36 mm sieve and the remainder of the aggregate consisting of a single size stone (between 6.7 mm and 13.2 mm).
From Asphalt Thin Surfacing page to Asphalt Guide index