Arlington National Cemetery Uses Geopolymer Mortar for Storm Water Rehab Project

Project conducted at night to avoid cemetery operations

aboveground work at Arlington National Cemetery
completed manhole lining with GeoSpray

The U.S. Army Corps of Engineers (USACE) is responsible for the maintenance and operation of utilities at Arlington National Cemetery, on the banks of the Potomac River in Arlington, Va. USACE is currently engaged in a multi-year, multi-phase project to rehabilitate and upgrade the storm water system that handles water and drainage throughout the solemn national landmark.

The cemetery has been in operation since 1864, and while the plan for land usage at the site today is very detailed and organized, this has not always been the case. Determining the exact locations of sewer assets and evaluating their condition are complex processes in planning for rehabilitation. Additionally, repair efforts are complicated by the fact that each day, there are, on average, 25 to 30 funerals and interments, during which no construction can be conducted.

Rehabilitation Solution

The USACE had originally specified a spiral-wound product for a 300-linear-ft section of pipe that on the original drawings was round with few complications. After the pipe was inspected, it was determined that there were several junction boxes and other concerns that made a spiral-wound solution less desirable.

After evaluating alternatives, it was determined that lining with a geopolymer was a viable option. USACE changed the specification and allowed for the application of GeoSpray geopolymer mortar for the pipes, junction boxes, and 200 vertical ft of manholes and other structures. USACE already had installed the product with good success in other military applications, including a project at Fort Bragg in North Carolina in 2015. Inland Pipe Rehab was awarded a subcontract for pipe bursting, geopolymer pipe lining and a portion of new construction work during phase 2 of the project.

Completed manhole lining with GeoSpray.

Results

The GeoSpray geopolymer lining was installed at night to avoid any disruption to the public or the operations of the cemetery while also adhering to detailed government regulations. Over a two-week period, all the pipe lining, manholes and junction boxes that were part of the project phase were completed. Further opportunities for use of GeoSpray are being evaluated by USACE for trenchless rehabilitation of military and other government assets.

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