Microsurfacing is a mixture of polymer modified asphalt emulsion, mineral aggregate, mineral filler, water, and other additives, properly proportioned, mixed and spread on a paved surface in variable thick cross-section which resists compaction.
Micro surfacing
We provide Innovative Infrastructure SolutionsMicro surfacing
Microsurfacing is a fast and durable pavement preservation technique that utilizes the benefits of cold-mixes using latex/polymer modified bitumen emulsion, fine aggregates and special additive, spread on a structurally sound pavement using a special computerized paver, spread in a thin film. Microsurfacing provides cost-effectiveness, fast application and durable material which delay distresses occurrence with traffic load and where pavement life extension is required before any casualty. The technology utilizes the advancement of asphalt emulsion technology by special mix design done in laboratory with carefully graded crushed aggregate, polymerized bitumen emulsion, fillers and break control additive that provide complete sealing of surface. Here this technique can be used for periodic renewals of roads in place of hot-mix treatment with excellent results and longer life to pavements.
Advantages of Microsurfacing
- Microsurfacing seals small cracks and surface imperfections, waterproofs the surface, and protects the pavement structure of both asphalt and concrete pavements.
- The high quality, crushed aggregate improves skid resistance.
- The mat provides an attractive, smooth black surface which aids in lane delineation.
- The very thin surfacing (4 to 8 mm) is ideal where curbs and overhead clearances need to be preserved.
- The microsurfacing emulsion reduces user delay by allowing traffic in about an hour after construction.
- The quick setting microsurfacing is suitable for night application on heavy-traffic streets, highways and airfields.
- Micro-surfacing fills depressions, small cracks and ruts, and provides some surface leveling.
- Microsurfacing is environmental friendly and easy in construction.
| Type II | For roads in urban and rural areas, residential streets, as preventive and renewal treatment (<1500 CVPD) |
| Type III | For primary and inter-state routes, highways and runways to give maximum skid resistance, preventive and renewal treatment (1500 to 4500 CVPD) |
| Specifications | ||
|---|---|---|
| Items | Type II ( 4-6 mm) | Type III ( 6-8 mm) |
| Quantity of Mix ( kg/m2 ) | 8.4 to 10.8 | 11.1 to 16.3 |
| Residual Binder ( % by weight of dry aggregate ) | 6.5 to 10.5 | 5.5 to 10.5 |
