Advantages, limitations and uses of RCC - RCC

Paving contractors, road builders and even government agencies are using RCC as a large selection of pavements because roller-calculated concrete [also known as RCC] is recognized throughout the United States. RCC has a unique quality that is different from traditional concrete or asphalt, making the pavement an economical, fast-structure candidate for many applications previously used for asphalt or conventional concrete.

RCC has traditionally been used for low-speed loads of heavy-duty surfaces because of its relatively rough texture, but in recent years RCC has been chosen as the preferred pavement for more commercial and industrial applications. Cities like Columbus, Ohio, have begun using RCC on residential streets, and Atlanta, Georgia, has used RCC for interstate shoulder construction. RCC is mainly used for industrial and commercial parking lots and construction of low traffic roads.

Typical applications for RCC include:

• Industrial access and parking area
• Delivery code and port
• Trucks and cargo terminals and distribution centers
• Commodity storage and composting areas
• Aircraft parking area
• City, country and park road
• Large commercial parking lot
• Temporary travel lane

RCC is also used in pavement systems for higher traffic speeds, as a basis for traditional concrete, or for lower lift in double-layer laying operations.

There are many benefits to using roller compaction concrete, but the main factor is that RCC can be manufactured faster and cheaper than conventional concrete and multi-layer asphalt pavement. The RCC can be constructed quickly because it is usually placed with an asphalt paver equipped with a standard or high-density screed and then compacted with a roller. Unlike traditional concrete, no stencils, pins, reinforcements and vibrations are used. In addition, no transverse joints are required, but when the project stipulates that they must be present, the joints are spaced apart from conventional concrete.

The cost savings associated with RCC are not only due to ease of construction, but also the use of less Portland cement as the most expensive component of conventional concrete. The specific savings associated with the use of roller concrete depend on the complexity of the structure, the size of the project and the specified hybrid design.

Other benefits of RCC - RCC

• Durability and chemical resistance
• High freeze-thaw durability even without air entrainment
• High strength, able to support repeated repetitive loads without failure
• Reduce cracking and shrinkage
• Rigid surface eliminates rutting except for heavy tire chains or inlaid tires
• Resistant to wear even under heavy traffic loads and volumes
• Light-colored surface reduces the illumination required for parking and storage areas
• Light vehicles and cars can be driven on the RCC immediately after completion

While the benefits of RCC are numerous, it is important to understand that there are some limitations to using RCC. For example, the production of a large number of RCCs requires specialized equipment. Although the transport mixer truck can mix RCC, the mixing time is significantly longer than conventional concrete, and due to the drying of the RCC mixture, the amount of RCC that can be mixed in the truck is reduced. In addition, the RCC surface may not be suitable for high speed traffic without diamond grinding.

Other restrictions on RCC

• Adjacent plates and multiple horizontal lifts must be placed within one hour to ensure a good connection without cold joints
• The edge of the pavement is more difficult to compact, resulting in 96% modified supervised density on most cold joints.
• Due to the drying of the material, the amount of mixture on the RCC may be higher than that of conventional concrete.
• Laying RCC in hot weather requires extra attention to reduce the possibility of water loss and evaporation

When considering the versatility of RCC, its ease of application compared to conventional concrete and its durability compared to asphalt, it is clear that roller concrete is a suitable paving alternative. When considering the rising cost of basic products such as petroleum and petroleum, such as asphalt, it is clear that RCC is a paving material for the future.

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