Breining Microsurfacing serves as an ideal road maintenance arsenal. A look at how it works.
Providing a suitable solution for a broad range of problems on today’s streets, highways, and airfields, Microsurfacing is one of the most versatile tools in the road maintenance arsenal. A polymer-modified cold-mix paving system, Microsurfacing like its parent product slurry seal, begins as a mixture of dense-graded aggregate, asphalt emulsion, water and mineral fillers. While conventional slurry seal is used around the world as an economic treatment for sealing and extending the service life of both rural and urban roads, Microsurfacing has added capabilities. Its enhanced strength comes from the use of high quality, carefully monitored material, including advanced polymers and other modern-day additives.
Introduced in the late 1960s, Microsurfacing was pioneered in Germany. Being challenged to use the conventional slurry, German scientist had to find a way to use it in thicker applications which could be applied in narrow courses for wheel ruts, and not destroy the expensive road striping lines on the autobahns. When they used highly selected aggregates and modified bitumen, blended together with stabilisers and emulsifiers, the new product remained stable even when applied in multi-stone thickness; the result was Microsurfacing.
Introduced in the United States in 1980, Microsurfacing now is recognised not only as the most cost effective way for surface maintenance and treatments, but also an effective tool to treat other road surface problems. It is now used in countries like Europe, United States, and Australia and is making inroads into many other areas.
Microsurfacing serves as an ideal solution for the maintenance of national highways both from economical and ecological point of view. Its technique caters to surface re-profiling, surface s, cosmetic s, routine and preventive road maintenance requirements.
With the need to make the roads more durable, Microsurfacing easily protects the penetration of water into s, thereby preventing further damage to the road, which could eventually require expensive and time consuming repair activities. An ideal money saver for BOT operators, this technique with its rapid remedial efficacies opens the surface to traffic within 30 minutes of treatment.
In the case of maintenance activities, Microsurfacing does not require equipment such as rollers, further reducing the carbon emissions from maintenance activities and less hazardous to the operating crew. Reducing accidents on site, modern automated machines like the Breining micro surfacing paver prepares the slurry mix on the jobsite, eliminating the need for a mixing plant, mix transport vehicle and labour involved in the activity.
Available with a life expectancy usually exceeding seven years, Microsurfacing fills wheel ruts up to 1-1/2 inches (38 mm) deep when the pavement has stabilised. It is not subject to plastic deformation and solves this problem without milling.
New age solution
Using various design mixes, techniques, and equipment, Microsurfacing can be successfully used in different situations. Due to its quick-traffic properties, it can be applied in a broad range of temperature and weather conditions, effectively lengthening the paving season. It is particularly suitable for night applications on heavy-traffic streets, highways, and airfields.
High traffic areas: In quick-traffic applications as thin as 3/8 inch (9.5 mm), Microsurfacing increases skid resistance, colour contrast, surface restoration, and service life to high-speed roadways (interstates and autobahns). Such projects and applications have a great advantage as the roads are often reopened to traffic within less than an hour.
Modern, continuous-load pavers can lay over 500 tonne of Microsurfacing per day, with no long traffic delays. This equates to an average 10 to 11 km per day for surfacing applications.
Airfields: Dense-graded Microsurfacing produces a skid-resistant surface without loose rock that damages aircraft engines. It is applied to sections of roads or runways to eliminate hydroplaning problems that occur during rains. It helps restore the proper surface profile and makes the area safe to use.
City roads maintenance: As a thin, restorative surface source on urban arterials and heavy traffic intersections, Microsurfacing does not alter drainage; there is no loss of curb revealed. It can be applied to both asphalt and cement concrete roads and is often used to restore a skid-resistant surface to slick bridge decking with minimum added dead weight.
Breining, Germany, is a Fayat Group company, having an enviable track record of serving the industry for more than 100 years. The Breining machine and technology has been used world wide to treat and enhance life to thousands of kilometres of roads. The fully automatic machine and stores produces and lays the mix right on the job site without assistance of any other machine. The machine carries aggregates, bitumen, filler, water and additives to the site, where the mix is metered and mixed inside its mixer and applied using the on board screed; similar to a paver finisher.
Breining machines are at present used in New Delhi to prepare the city roads for the upcoming Commonwealth games.