Water & Wastewater

The care and maintenance of infrastructure has become a global issue, and one of the most critical areas of concern today is the capture and movement of water and wastewater. Look at how our series of solutions that can be used alone or in conjunction with each other to address the problems encountered with water and wastewater infrastructure daily.

GeoSpray® Mortar: Culvert Lining

Dec 27, 2018, 14:01 PM
Title : GeoSpray® Mortar: Culvert Lining
Location : Cary, NC
Source Site :
Source Name :
Author :
Publish Date : Aug 16, 2017, 00:00 AM
The town of Cary, North Carolina, is an affluent municipality located southwest of Raleigh. The town is near the center of the Triangle region, a commuter area consisting of three major universities: Duke, UNC and NC State as well as the technology hub located in Research Triangle Park. The housing development of Preston is located adjacent to the Prestonwood Country Club, where housing values range between $300,000 and $1M. Bridle Creek Dr. is the main entrance to the community, and the golf course with Bridle Creek crossing though a triplet of 52”-54” CMP culverts. In 2016, a section of one of these culverts collapsed, creating a sinkhole on the side of the road. The collapse was quickly repaired with a new section of CMP, but the community was concerned that the remaining CMP sections were showing corrosion in the invert and it would be only a matter of time before a more serious collapse occurred.
Project Overview
The town of Cary, North Carolina, is an affluent municipality located southwest of Raleigh. The town is near the center of the Triangle region, a commuter area consisting of three major universities: Duke, UNC and NC State as well as the technology hub located in Research Triangle Park. The housing development of Preston is located adjacent to the Prestonwood Country Club, where housing values range between $300,000 and $1M. Bridle Creek Dr. is the main entrance to the community, and the golf course with Bridle Creek crossing though a triplet of 52”-54” CMP culverts. In 2016, a section of one of these culverts collapsed, creating a sinkhole on the side of the road. The collapse was quickly repaired with a new section of CMP, but the community was concerned that the remaining CMP sections were showing corrosion in the invert and it would be only a matter of time before a more serious collapse occurred.

Solution
In May 2017 the town put out a project for bid for the pipe renewal using a centrifugally cast-in-place cementitious lining of 1” thickness. The bid was won by Inland Pipe Rehab with a low bid of $79,725 for the lining of 175 linear ft of 52” CMP and an additional 20 linear ft of 54” CMP. Once the project was awarded, the contractor began construction in August. There were three side-by-side pipes, so the flow was diverted into a single section and each of the pipes were pressure-washed and cleaned. There was little to no infiltration do to the low bury depth of the pipes, but several missing sections of the inverts were filled. Then the GeoSpray geopolymer mortar lining was applied to each of the three pipes section over a three-day period. The 1” coating was applied to each section of pipe in a single application. 

Results
This was the first time the Town of Cary had chosen a GeoSpray geopolymer mortar lining solution and many of the town engineers were onsite to observe the process of application. They were impressed with how quickly and easily the pipe could be repaired. The small footprint of the equipment allowed both lanes of the busy road to remain open during the entire duration of the project, which was a major bonus to the residents. The entire project was completed, including site restoration, in under a week.

GeoSpray_Culvert Lining_Cary_Start of LiningGeoSpray_Culvert Lining_Cary_Culverts to be LinedGeoSpray_Culvert Lining_Cary_CorrosionGeoSpray_Culvert Lining_Cary_Casting Equipment PositioningGeoSpray_Culvert Lining_Cary_Equipment FootprintGeoSpray_Culvert Lining_Cary_ApplicationGeoSpray_Culvert Lining_Cary_After
Cary Culvert Lining Case Study Title Page GeoSpray CS-Culvert Lining-CaryNC

GeoSpray® Mortar: Culvert Lining

Dec 27, 2018, 14:01 PM
Title : GeoSpray® Mortar: Culvert Lining
Location : Cary, NC
Source Site :
Source Name :
Author :
Publish Date : Aug 16, 2017, 00:00 AM
The town of Cary, North Carolina, is an affluent municipality located southwest of Raleigh. The town is near the center of the Triangle region, a commuter area consisting of three major universities: Duke, UNC and NC State as well as the technology hub located in Research Triangle Park. The housing development of Preston is located adjacent to the Prestonwood Country Club, where housing values range between $300,000 and $1M. Bridle Creek Dr. is the main entrance to the community, and the golf course with Bridle Creek crossing though a triplet of 52”-54” CMP culverts. In 2016, a section of one of these culverts collapsed, creating a sinkhole on the side of the road. The collapse was quickly repaired with a new section of CMP, but the community was concerned that the remaining CMP sections were showing corrosion in the invert and it would be only a matter of time before a more serious collapse occurred.
Project Overview
The town of Cary, North Carolina, is an affluent municipality located southwest of Raleigh. The town is near the center of the Triangle region, a commuter area consisting of three major universities: Duke, UNC and NC State as well as the technology hub located in Research Triangle Park. The housing development of Preston is located adjacent to the Prestonwood Country Club, where housing values range between $300,000 and $1M. Bridle Creek Dr. is the main entrance to the community, and the golf course with Bridle Creek crossing though a triplet of 52”-54” CMP culverts. In 2016, a section of one of these culverts collapsed, creating a sinkhole on the side of the road. The collapse was quickly repaired with a new section of CMP, but the community was concerned that the remaining CMP sections were showing corrosion in the invert and it would be only a matter of time before a more serious collapse occurred.

Solution
In May 2017 the town put out a project for bid for the pipe renewal using a centrifugally cast-in-place cementitious lining of 1” thickness. The bid was won by Inland Pipe Rehab with a low bid of $79,725 for the lining of 175 linear ft of 52” CMP and an additional 20 linear ft of 54” CMP. Once the project was awarded, the contractor began construction in August. There were three side-by-side pipes, so the flow was diverted into a single section and each of the pipes were pressure-washed and cleaned. There was little to no infiltration do to the low bury depth of the pipes, but several missing sections of the inverts were filled. Then the GeoSpray geopolymer mortar lining was applied to each of the three pipes section over a three-day period. The 1” coating was applied to each section of pipe in a single application. 

Results
This was the first time the Town of Cary had chosen a GeoSpray geopolymer mortar lining solution and many of the town engineers were onsite to observe the process of application. They were impressed with how quickly and easily the pipe could be repaired. The small footprint of the equipment allowed both lanes of the busy road to remain open during the entire duration of the project, which was a major bonus to the residents. The entire project was completed, including site restoration, in under a week.

GeoSpray_Culvert Lining_Cary_Start of LiningGeoSpray_Culvert Lining_Cary_Culverts to be LinedGeoSpray_Culvert Lining_Cary_CorrosionGeoSpray_Culvert Lining_Cary_Casting Equipment PositioningGeoSpray_Culvert Lining_Cary_Equipment FootprintGeoSpray_Culvert Lining_Cary_ApplicationGeoSpray_Culvert Lining_Cary_After
Cary Culvert Lining Case Study Title Page GeoSpray CS-Culvert Lining-CaryNC