ACPA Quarter 3 2018

www.acpa.org Quarter 3, 2018 17 A L A B A M A R C C P R O J E C T replace material. “This project was different for us because we are usually a subcontractor, but we were the prime contractor on this project,” says RodneyWoodham, project manager for A.G. Peltz. Woodham’s crew handled the grading and placement of 10 in. of RCC but subcontracted the asphalt milling to another company. To allow time to cure, lanes across the bridge and entrance/exit ramps were constructed in phases. Traffic was re-routed to the next interstate exit to minimize traffic at the work site. This is not the first RCC road pavement placed by A.G. Peltz, and although the process is similar to industrial or commercial applications, there are two differences, says Chris Carwie, business development manager for the contractor. “This pavement must meet rideability specifications set by ALDOT, so it was necessary to grind,” he says. “Also, the pavement design was thinner than typically required for container stacking operations at an intermodal facility so a single lift RCCwas possible—10 in. was placed in one pass.” One lesson learned in this—the first RCC road pavement in the area—was related to contract language, says Couch. “Detail work, such as the top of the entrance and exit ramps, required cast-in-place concrete to provide the transition from the RCC pavement to the ramp,” he says. “We did not anticipate that and will provide a separate line item for that work in the future.” “It was an efficient process with the same paver used to spread and compact the base that was used to place the RCC,” says Couch. He does see RCC as a potential solution for road projects that have long, uninterrupted stretches of pavement, for which temporary lane closures to allow cure time are possible. “I will recommend use of RCC tomy supervisors again for the right application.” Although the concrete is not as deep as traditional asphalt pavement, it provides the structural strength needed in areas of heavy truck traffic. AL ABAMA I - 59/2 0