Nomaflex expansion joint filler has been installed in commercial, residential and DOT applications throughout the US since its introduction in 2015.
Its primary purpose is for use as an expansion joint filler for concrete sidewalks, driveways, curb & gutters, medians, roadways, concrete ditches, retaining walls and other concrete structures. It can be used as a form, especially where curves or radii are required. It can also be used with or without joint sealant.
This gallery of installations supports the physical property testing as completed through the national AASHTO APEL program. The APEL data substantiates the benefits of using Nomaflex as an alternative to the currently specified materials. View ASTM D8139, the new standard specification for semi-rigid, closed-cell polypropylene foam.
Used as a Form
In December 2015, Nomaflex 6″ wide plank was used as a form for a college fountain project in Durham, NC. Nomaflex bends easily and will not crack or break. After the concrete was poured, the contractor easily removed the Nomaflex form and can re-use the product on future jobs.
Highway / Bridge Retaining Walls
Contractors disliked the asphalt expansion material leaching and staining the decorative wall and spent a ton of time and money sanding off stains. To eliminate this common problem caused by asphalt impregnated fiberboard, the contractor chose Nomaflex Sheet which contains no asphalt binders.
Nomaflex was used as expansion joint filler for a cast-in-place, highway/bridge earth retaining wall project in Downtown Columbus, OH. Before the concrete pour, Nomaflex Sheet was easily trimmed with a utility knife, then held in place with standard concrete nails with washers. It was positioned to form the gap between the vertical concrete walls & footings, between the vertical walls & drainage ditch, and as transverse expansion joint filler for all vertical structures as well as horizontal structures and flatwork. After the pour, tooling around the Nomaflex was easy and joint appearance was flawless. After curing of the concrete, there are no signs of looseness or significant gaps that would allow incompressible materials to penetrate the joint and there were no signs of concrete spalling around the joint system.
As a result of using Nomaflex, there are no stains or leaching from the material, which resolved the contractors #1 issue with using fiberboard.
Municipal Sidewalk Project
In December 2016, Nomaflex was installed as expansion joint filler on a municipal sidewalk project in Tucson, AZ. Before the concrete pour, Nomaflex was positioned against a wood form and along the backside of the curb & gutter. It was not held in place with fasteners. During the pour, Nomaflex stayed in place and did not float or extrude.
After the pour, tooling around Nomaflex was easy and joint appearance was flawless. Once the concrete cured, sealant was not applied, leaving Nomaflex exposed to the environment. There were no signs of extrusion of the material above the joint/slab surfaces. After more than two years of service, Nomaflex is still in place and shows no signs of degradation, no signs of looseness or significant gaps that would allow incompressible materials to penetrate the joint and are no signs of concrete spalling around the joint system.
DOT Project
Nomaflex was used as both expansion joint filler and a concrete form on a Mississippi community college sidewalk, curb and gutter project. This project was completed in March 2017 and required nearly 1000 linear feet of Nomaflex expansion joint filler. As of today, Nomaflex is still in place and shows no signs of degradation.
“I think you have a winner with this product. Yes, besides being easy to work with, after a couple of weeks the concrete "turns loose" of the top edge of the expansion joint material leaving a clean job. With the asphalt type, you had to scrape the over pour off. With Nomaflex, you just sweep clean!”Contractor
Commercial Installation
Nomaflex was installed in May 2015 in this North Carolina commercial building. It was used as both expansion joint filler and isolation joint filler on the curb and gutter, between pedestrian walkway slabs and between the slab and building. Before the concrete pour, Nomaflex was held in place with standard nails and pins. The contractors were pleased that Nomaflex could easily bend around corners without breaking.
After 4 years of service, Nomaflex is still in place and shows no signs of degradation – unlike the adjacent asphalt impregnated fiberboard shown in the gallery below.
