A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Roller Compacted Concrete Pavement in Virginia
Roller compacted concrete (RCC) is a concrete mixture with a low cementitious material and water content and a dry consistency. It is placed using an asphalt paver and consolidated using roller compaction. This zero-slump concrete does not require slip-form conventional concrete paving equipment for placement. It does not contain reinforcement, tie-bars, or dowels. RCC can be placed and opened to traffic in a short period of time. All of these factors combined make it a relatively low-cost roadway compared to either asphalt or conventional concrete pavements. However, RCC may lack the smoothness required for high-speed roadways and can ravel and/or crack; an asphalt overlay may remedy the smoothness and raveling issues. Although cracks may occur in the RCC and potentially reflect through the asphalt layer, such cracks should stay tight because of the low shrinkage of RCC. A composite pavement with RCC and an asphalt overlay has the potential to be a cost-effective long-lasting pavement system. The Virginia Department of Transportation (VDOT) has implemented RCC technology to rebuild a section of Route 684 (Staffordboro Boulevard) and roads leading to a commuter parking lot in Stafford, Virginia. Approximately 2 lane-miles of the pavement were reconstructed or built using RCC with a 2-inch asphalt overlay. This paper summarizes the construction procedures and provides information on the lessons learned. After initial difficulties, the project is progressing successfully. Although the majority of the roads were open to traffic in 48 hours, a portion of Staffordboro Boulevard was opened to traffic in 6 hours. The mixture used had 15% fly ash for improved durability and sustainability. An issue with compaction occurred because the equipment had to be adjusted to provide the required density. Compaction was dependent not only on the equipment but also on the mixture consistency, which relates to the moisture content. Continuous determination of density and moisture was essential in the quality control of RCC.
Roller Compacted Concrete Pavement in Virginia
Roller compacted concrete (RCC) is a concrete mixture with a low cementitious material and water content and a dry consistency. It is placed using an asphalt paver and consolidated using roller compaction. This zero-slump concrete does not require slip-form conventional concrete paving equipment for placement. It does not contain reinforcement, tie-bars, or dowels. RCC can be placed and opened to traffic in a short period of time. All of these factors combined make it a relatively low-cost roadway compared to either asphalt or conventional concrete pavements. However, RCC may lack the smoothness required for high-speed roadways and can ravel and/or crack; an asphalt overlay may remedy the smoothness and raveling issues. Although cracks may occur in the RCC and potentially reflect through the asphalt layer, such cracks should stay tight because of the low shrinkage of RCC. A composite pavement with RCC and an asphalt overlay has the potential to be a cost-effective long-lasting pavement system. The Virginia Department of Transportation (VDOT) has implemented RCC technology to rebuild a section of Route 684 (Staffordboro Boulevard) and roads leading to a commuter parking lot in Stafford, Virginia. Approximately 2 lane-miles of the pavement were reconstructed or built using RCC with a 2-inch asphalt overlay. This paper summarizes the construction procedures and provides information on the lessons learned. After initial difficulties, the project is progressing successfully. Although the majority of the roads were open to traffic in 48 hours, a portion of Staffordboro Boulevard was opened to traffic in 6 hours. The mixture used had 15% fly ash for improved durability and sustainability. An issue with compaction occurred because the equipment had to be adjusted to provide the required density. Compaction was dependent not only on the equipment but also on the mixture consistency, which relates to the moisture content. Continuous determination of density and moisture was essential in the quality control of RCC.
Roller Compacted Concrete Pavement in Virginia
Hossain, M. Shabbir (author) / Ozyildirim, H. Celik (author)
Airfield and Highway Pavements 2015 ; 2015 ; Miami, Florida
Airfield and Highway Pavements 2015 ; 429-440
2015-06-05
Conference paper
Electronic Resource
English
User's Guide: Roller-Compacted Concrete Pavement
| NTIS | 1994
Roller-Compacted Concrete Pavement: An Industry Perspective
| British Library Conference Proceedings | 2005
Roller-Compacted Concrete Pavement: An Industry Perspective
| British Library Conference Proceedings | 2005