What are the characteristics of closed-cell foam board?

You might have just heard of closed-cell foam board for the first time. It's a material that is widely used in many of our dams, wharfs, and infrastructure projects. But how much do you actually know about it? Today, we're going to take a closer look at what closed-cell foam board is, why it's so popular, and where it's commonly applied.

What is closed-cell foam board?

Closed-cell foam board is known for its high density and superior performance compared to traditional materials like three-oil four felt, asphalt, and wood fiber boards. It’s also an environmentally friendly option, making it a great choice for those who are conscious about sustainability. Its installation is straightforward, and it offers excellent waterproofing and leak prevention properties. The density of the board plays a key role in its water resistance—low-density versions offer exceptional waterproofing, with minimal water absorption measured in cubic centimeters.

Beyond its impressive waterproofing capabilities, closed-cell foam board has several other notable features. It can withstand extreme temperatures without becoming brittle or melting. It is resistant to corrosion from acids, alkalis, and oils, and has a unique closed-cell structure that gives it a high recovery rate. Additionally, it is highly resistant to aging, which makes it a long-lasting solution for various applications. These qualities have made it a preferred choice in many construction and engineering projects.

Today, closed-cell foam board is used in a wide range of applications, including expansion joints in concrete highways, water-stop boards for road and bridge joints, expansion joint boards in dams, reservoirs, slopes, and retaining walls, as well as in thermal power plants, water towers, and construction sites. It's also used in settlement joints, frame joints, and water-stop joints in domestic water treatment facilities, sewage systems, airport runways, ports, docks, tunnels, and subway systems.

Key Features of Closed-Cell Foam Board

1. Low density with a high recovery rate and a fully closed-cell structure.

2. Minimal water absorption and excellent resistance to seepage.

3. Resistant to corrosion from acids, alkalis, salts, and oils, along with strong aging resistance.

4. Does not melt at high temperatures and remains flexible at low temperatures.

Applications of Closed-Cell Foam Board

This versatile material is used in various types of concrete structures, such as highway expansion joints, bridge and road joints, overpasses, underpasses, underground passages, subways, bridgehead barriers, slope protection on highways, roadbed protection, and more. It is also used in power plants, cooling towers, and other construction projects for water-stop joints. Whether it's for airports, ports, tunnels, or hydraulic projects, closed-cell foam board provides reliable sealing and protection against water damage.

We’ve covered the basics of closed-cell foam board today. If you’re looking for more information on construction materials, home improvement, or sustainable building solutions, be sure to check out our website regularly.

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