The superior performance and economic advantages of roller compacted concrete (RCC) for industrial paving projects – and as a base for conventional paving – are a win-win for contractors and pavers across the nation.
Roller compacted concrete construction is fast and competitive. Over its lifetime, RCC exhibits significantly lower maintenance costs as it does not rut, deteriorate with under extreme freeze or thaw conditions, and withstands the rigors and daily wear and tear of heavy, high traffic loads.
What is Roller Compacted Concrete?
Roller compacted concrete – or rolled concrete – is a special blend of concrete that has the same ingredients as conventional concrete, just in different ratios. RCC contains aggregates, cement, and water, but is much drier and essentially has no slump. It is placed in a manner similar to traditional paving – often by dump truck or conveyor – then spread by bulldozers or modified asphalt pavers. After placement, RCC is compacted by vibratory rollers. The process requires no forms, finishing, surface texturing, or joint sawing and sealing.
When to Use Roller Compacted Concrete
Traditionally used for concrete pavements, RCC is increasingly being used as a fast, economical construction method for dams, off-highway projects, heavy duty parking and storage areas, and as a base for conventional pavements. RCC is used when strength, durability, and fast construction are primary needs of projects at:
- Port, intermodal, and distribution facilities
- Parking, storage, and staging areas
- Manufacturing plants
- Military bases
- Airports and railways
Roller compacted concrete is increasingly being used to build concrete dams because the low cement content causes less heat to be generated while during than conventional massive concrete pours. For dam applications, RCC section are built lift-by-lift in successive horizontal layers resulting in a downstream slope that resembles a concrete staircase.
Advantages of Roller Compacted Concrete
No rutting, no potholes – the high strength of RCC pavements eliminates common and costly problems associated with asphalt pavements. RCC pavements not only resist rutting, they also:
- Span soft localized subgrades
- Will not deform under heavy, concentrated loads
- Do not deteriorate from spills of fuels and hydraulic fluids
- Will not soften under high temperatures
Roller compacted concrete owes much of its economy to high volume, high speed construction methods. The production pace is set by large capacity mixers – typically continuous mixing pugmills – on or near the construction site. Continuous mixing technology makes it possible to discharge a constant flow of mixed material to keep up with the fast construction and placement needs.
Equipment Recommendations for Roller Compacted Concrete
RWC Equipment Leasing recommends Rapidmix mobile pugmill plants for high volume, accurate RCC production. Depending on the Rapidmix model, material can be produced at speeds up to 600 tons per hour using volumetric measurement or continuous weigh systems.
If you plan on using roller compacted concrete for your next pavement project, consider the benefits of leasing or renting a high-volume, Rapidmix mobile pugmill from RWC Equipment Leasing. For more information, call Bobby Carroll at (561) 400-3204.