While Rollcon has built a solid reputation as the premier roller compacted concrete (RCC) contractor in the United States, our capabilities don’t end there. We offer a full line of paving solutions and services to satisfy the unique needs of any job or project. If you have a question about our services, materials, pricing, or capabilities, please don’t hesitate to ask. Our team of paving experts is standing by to provide a consultation on your next project.
- ROLLER COMPACTED CONCRETE (RCC)
- CONCRETE PAVEMENT/ PREVIOUS CONCRETE
- CEMENT-TREATED BASE (CTB)
- SOIL STABILIZATION/ CEMENT-MODIFIED SOIL (CMS)
ROLLER COMPACTED CONCRETE (RCC)
THE NEW STANDARD
Roller compacted concrete (RCC) is a tough, durable type of concrete pavement that is well suited for heavy industrial applications, as well as low-speed roads and arterial roads.
RCC has a similar ingredients to what the industry calls “conventional concrete” (stone, sand, cement, and water).
The difference between RCC and conventional concrete is that RCC is mixed using different proportions and placed by different methods.
Roller compacted concrete pavement is a dry mix that is rigid enough to bear the weight of 12-ton rollers and stiff enough to be compacted by high-density pavers. Typically, RCC is first placed through a high-density paver and then compacted by a non-vibratory or vibratory roller.
Most of the time, RCC is constructed without formwork, steel reinforcement, or dowels, contributing to a significant time and cost savings in these areas for the job at hand.
Rollcon completes roller compacted concrete projects for clients across the United States. For more information on RCC, please visit our “What is RCC?” page.
FULL PROJECT MANAGEMENT
As North America’s premier roller compacted concrete contractor, Rollcon has the tools and experience to manage any concrete project. Our expert tradespeople, project managers, job site superintendents, and office personnel utilize the latest software to work with architects, engineers, government inspectors, general contractors, and building owners to complete projects in a safely, on time, and on budget.
CONCRETE PAVEMENT/PREVIOUS CONCRETE
Concrete pavement is a highly compacted mixture of soil/aggregate, cement, and water.
As the cement reacts, or hydrates, the mixture gains strength and improves the engineering properties of the raw soil.
The major variables that control the properties and characteristics of concrete pavement mixtures are the type of soil or aggregate material, the proportion of cement in the mix, the moisture conditions, and the degree of compaction.
It is possible, simply by varying the cement content, to produce soil-cement that ranges from a basic modification of the compacted soil (or cement-modified soil) to fully hardened soil-cement that is strong, durable, and frost-resistant.
Around the United States, concrete pavement is widely used as a low-cost pavement base for roads, residential streets, parking areas, airports, shoulders, materials handling, and storage areas. Its cost compares favorably with that of granular-base pavement.
When built for equal load-carrying capacity, soil-cement is almost always less expensive than other low-cost site treatment or pavement methods. The advantages of great strength and durability combined with low first cost make concrete pavement the outstanding value in its field. Rollcon is proud to offer the expertise and materials necessary to handle any concrete pavement project in the U.S.
CEMENT-TREATED BASE (CTB)
Cement-treated base (CTB) is an intimate mixture of aggregate material and/or granular soils combined with measured amounts of Portland cement and water that hardens after compaction and curing to form a durable paving material. A bituminous or Portland cement concrete layer is placed on the CTB to complete the pavement structure.
Cement-treated base is widely used as a pavement base for highways, roads, streets, parking areas, airports, materials handling, and storage areas.
CTB offers slab-like characteristics in strength and, when properly engineered, can act as a load-carrying element by distributing weight over a wider area and reducing stress on the subgrade materials.
It is virtually waterproof and resists rain, freezing, and other seasonal weather damage. Overall, it is much stronger than granular bases.
Cement-treated base is used in heavy civil construction applications such as transportation infrastructure, airports, and ports. It’s an economical and environmentally friendly pavement base option because it utilizes local aggregates and on-site soils.
CTB also allows for quick construction and associated savings in time and expense.
SOIL STABILIZATION/CEMENT-MODIFIED SOIL (CMS)
A cement-modified soil (CMS) is a soil material that has been treated with a relatively small proportion of Portland cement (less than is required to produce hardened concrete pavement). Cement application rates for CMS typically vary from 2–6 percent by dry weight of the soil/aggregate being modified with the majority of cases being between 3–5 percent.
The objective of the treatment is to amend the undesirable properties of problem soils/aggregates so that they are suitable for use in construction.
With the small quantities of cement generally used, CMS becomes caked or slightly hardened. However, it still functions essentially as a soil, although an improved one. The degree of improvement depends on the quantity of cement used and the type of soil.
The pavement base provides the thickness and stiffness necessary to carry heavy traffic loads. Therefore, by the addition of varying amounts of cement, it is possible to produce cement-modified soils with a wide range of engineering properties.
The strong uniform support provided by cement stabilization results in reduced stresses applied to the subgrade.
A thinner cement-stabilized section can reduce subgrade stresses more than a thicker layer of untreated aggregate base. Subgrade failures, potholes, and road roughness are thus reduced.
As North America’s premier roller compacted concrete contractor, Rollcon has the tools and experience to manage any concrete project. Our expert tradespeople, project managers, job site superintendents, and office personnel utilize the latest software to work with architects, engineers, government inspectors, general contractors, and building owners to complete projects safely, on time, and on budget.
ASK THE EXPERTS
Want to know more about roller compacted concrete and the other paving services that Rollcon provides? Let’s talk! Contact us today for more information or specifics on our services and materials.