South Korean technology for thin overlays

South Korean company Hansoo Road Industry has developed an ultra-thin hot mix asphalt pavement layer, Recover asphalt, designed to overlay cracked pavements at a depth of between 10 and 20mm. “Our company has been studying asphalt modifiers since 1999 and has know-how on research and development of asphalt modifiers,” said Yulia Min, manager at Hansoo Road Industry. “Recover asphalt was developed through a four-year study based on the previous studies of asphalt modifier technology.” Recover asphalt has
May 15, 2019 Read time: 2 mins
Hansoo Road Industry’s Recover asphalt is a 2cm-thick overlay, which can be installed over cracked roads
South Korean company Hansoo Road Industry has developed an ultra-thin hot mix asphalt pavement layer, Recover asphalt, designed to overlay cracked pavements at a depth of between 10 and 20mm.


“Our company has been studying asphalt modifiers since 1999 and has know-how on research and development of asphalt modifiers,” said Yulia Min, manager at Hansoo Road Industry. “Recover asphalt was developed through a four-year study based on the previous studies of asphalt modifier technology.”

Recover asphalt has been used on national, local and urban roads in Korea since 2016 after the produce received its patent. It is currently undergoing tests and trials in China and Europe, says Min.

Recover asphalt is created by adding pellets containing CSM Modifier to the asphalt plant. Based on microfibres, the modifier contains additives which give elasticity and ductility to the asphalt mixtures at both low and high temperatures.

Min says that asphalt mixtures containing the modifier show “excellent plastic deformation resistance which can increase the performance of the asphalt pavement”. Because the small size of the aggregates in Recover asphalt, a maximum of 5mm, the overlay is used in downtown areas to reduce noise levels from road pavements. Hansoo said that over 8dB noise reduction is achieved, when compared to the existing, aged pavement with up to 12dB reduction observed for some roads.

Materials

Related Content

  • Quality road markings deliver greater road safety
    February 24, 2012
    Special high quality glass beads provide a vital part of the solution with road markings, particularly in the dark. In the European Union alone, roughly one-third of traffic accidents involving injuries happen at night, although only 20% of all traffic flows after dark.
    Read More
  • Russian quarry increases efficiency with Sandvik equipment
    August 20, 2015
    A quarry facility in Russia has increased working efficiency by using Sandvik machinery. Located in in the Kurgan Region (Urals) of Russia, the Sinarsky Quarry is benefiting from an increase in throughput and reduced downtime since its new Sandvik crushing and screening plant became fully operational. The company invested over €2 million on the new plant, and is aiming to use it in order to double its aggregates production. This increase in production is required in order to meet the doubling of demand for
    Read More
  • Cold road reclamation in South Africa
    July 18, 2012
    Raubex Construction’s new Cat RM500 rotary mixer is proving its worth on a road reclamation work on a South African highway Part of an extensive motorway network some 185km long, South Africa’s ongoing Gauteng Freeway Improvement Project (GIFP) is creating a modern, world-class toll route system. The new road will provide major impetus to socio-economic growth in the country’s most populous and commercially active region. Being built in stages by the South African National Roads Authority (SANRAL), these r
    Read More
  • Asphalt Plant innovation in the US and Eastern Europe
    May 20, 2014
    While one leading asphalt plant manufacturer is claiming a RAP production first, another is proving a big success in one part of Eastern Europe. Guy Woodford reports Astec Industries is continuing its track record for innovation by claiming it is the only asphalt plant manufacturer offering asphalt mix producers a 100% RAP [Recycled Asphalt Pavement] plant. With the addition of the Conexpo 2014 launched RAP KING plant to its product line, Astec says it is now able to offer a complete array of plants coverin
    Read More

Highlighted Content