Richway Industries is the premier manufacturer of equipment and foam concentrate for the production of cellular concrete. With over 39 years of foam generation and manufacturing experience, Richway Industries can provide the equipment, foam concentrate, technical support, and customer service to assist with all of your cellular concrete needs.

Richway Industries is located in Janesville, IA. With our 60,000 sq. ft facility and a full line up of CreteFoamers we have the ability to provide you with all of your equipment needs. All of our products are backed by solid technical expertise and outstanding customer service, which means you can count on Richway.

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Annular Space Pipe Fill

As part of a road reconstruction project in the Green Bay, WI. area, a new 8” diameter sewer pipe needed to be run through a 24” diameter tunnel bore underneath 290’ of existing roadway. Once the new pipe was in place, cellular concrete was chosen to fill in the annular space between the tunnel bore and the 8” pipe. Cellular concrete is an ideal material choice because of it’s ability to be pumped at low pressures and effectively fill the void. Also, cellular concrete reduces the risk of floating the pipe or collapsing it during the fill.

The CT-100D machine used on this project was owned by a customer, as was the project. Richway staff were on site to provide technical assistance and support. The CT-100D was used with a 2” pump hose that was connected to a 2” PVC pipe, serving as access to the annular space to be filled, which was 12 feet under ground. Density tests were done on both the injection and vent end of the pipe. Across 290’ of pipe there was only a difference of 1 PCF in density. As seen in the photos, a “test” tee was placed on the injection line to take samples for density checks on the cellular concrete, a critical part of quality control.

Click here to download the PDF for this project.
Richway Industries, Ltd. 504 North Maple P.O. Box 508 Janesville, Iowa USA 50647
Toll Free: (800) 553-2404 Voice: (319) 987-2976 Fax (319) 987-2251
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