How Does EPS Geofoam Help Reduce Lateral Loads on Retaining Walls?

The construction industry has been revolutionized by the highly flexible and reliable construction material that is referred to as Expanded Polystyrene (EPS) Geofoam. We would like to tell you why EPS Geofoam is so important to construction, and specifically, how it helps to reduce lateral loads on retaining walls.


What Is EPS Geofoam?

EPS geofoam is a lightweight, rigid, and engineered filling material that is composed of Expanded Polystyrene, which is also referred to as EPS.

As a filling material, the main benefit of EPS geofoam is its weight. It is approximately 100 times     less heavy than soil; EPS geofoam is a about ten percent the mass of water and around one to two percent the mass of soil.

EPS Geofoam maintains a very predictable level of compressive strength, and this makes it ideal for numerous structural applications.

How and Why Does EPS Geofoam Reduce Lateral Loads on Retaining Walls?

A retaining wall is a structure that serves to retain or hold soil. A few examples of materials that are utilized in the construction of retaining wall would be boulders, crushed rock, soil sand or concrete.

The main issue with the use of these traditional construction materials is that they tend to be on the heavier side, and therefore are much more difficult to construct things with these materials, in terms of time, resources, and manual labor efforts.

EPS geofoam is a fantastic, lightweight substitute for A fantastic, lightweight substitute for traditional retaining wall materials, which usually weigh approximately 100 times more than blocks of EPS geofoam.

The lower weight of Geofoam allows construction workers to effortlessly work on and build retaining walls that are segmental in shape, in a way that is quicker and more efficient. The expanded polystyrene material itself possesses a high resistance to compression, which makes this material highly suitable for ensuring that surrounding soil and structures are held in their rightful places.

Another benefit of EPS geofoam is its resistance to water absorption. EPS geofoam is a closed-cell material, and it will not decompose, leach into the ground, or rot over extended periods of time. This makes the material highly unaffected to the wear and tear that may be caused by moisture over time. In addition, EPS geofoam can offer great levels of stability. Utilizing an EPS geofoam filling in a retaining wall will ensure lowered levels of lateral pressure, and it will also prevent any kind of settlement.

Most construction teams will instate a system for drainage underneath the geofoam for the prevention of any buoyancy or hydrostatic pressure.

Poly Molding specializes in the supply of Expanded Polystyrene (EPS) products like Geofoam that are utilized in a wide range of industries and sectors and can advise you on the best way to incorporate this eco-friendly, lightweight, and inexpensive insulation material into your project. Please contact us at for more information. 

Contact us at (800) 229-7161 or (973) 835-7161.

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