FAQ

Our Product

What are Armorock Polymer Concrete manholes and structures made of?

Armorock Polymer Concrete consists of four ingredients: resin, sand, aggregate, and FRP rebar.

What does the 50-year corrosion warranty cover?

Armorock's 50-year corrosion warranty guarantees resistance to H₂S gas and corrosive environments. To date, no customer has ever needed to use the warranty—proving the long-term reliability of our material.

Is your product truly 100% corrosion proof?

Yes. Armorock uses FRP rebar to reinforce structures, which is completely corrosion-resistant. Other manufacturers often use steel rebar reinforcement, which is not corrosion-proof and becomes exposed during coring.

What makes Armorock different from traditional concrete structures?

Armorock structures are 100% corrosion-proof, engineered with over twice the compressive and flexural strength of traditional concrete. In addition, our product is designed to be lighter, reducing the need for heavy lifting equipment during installation. Unlike traditional concrete, Armorock products do not require coatings, liners, admixtures, or ongoing maintenance. This results in less rehabilitation, reduced labor, and significantly lower life cycle costs. Choosing Armorock is not just a product decision, it is an investment in the future of your infrastructure.

Do Armorock structures require coatings, liners, or admixtures?

No. Armorock is not a coating, liner, or admixture. It is a fully corrosion-proof material from the inside out.

What sizes are available for Armorock structures?

Armorock structures are available in standard diameters ranging from 48 inches to 192 inches. Custom sizes and configurations are also available to meet specific project requirements.

Is there an ASTM standard for polymer concrete?

Currently, no ASTM standard exists specifically for polymer concrete structures. However, Armorock uses ASTM D6783 (rigid polymer concrete pipe) and ASTM C478 (precast concrete manholes) as benchmarks for mix design and load criteria. Armorock is also ISO 9001:2015 certified, ensuring consistent quality and compliance with internal operating standards.

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FAQ

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industry standards

Our Product

What are Armorock Polymer Concrete manholes and structures made of?

Armorock Polymer Concrete consists of four ingredients: resin, sand, aggregate, and FRP rebar.

What does the 50-year corrosion warranty cover?

Armorock's 50-year corrosion warranty guarantees resistance to H2S gas and corrosive environments. To date, no customer has ever needed to use the warranty—proving the long-term reliability of our material.

Is your product truly 100% corrosion proof?

Yes. Armorock uses FRP rebar to reinforce structures, which is completely corrosion-resistant. Other manufacturers often use steel rebar reinforcement, which is not corrosion-proof and becomes exposed during coring.

What makes Armorock different from traditional concrete structures?

Do Armorock structures require coatings, liners, or admixtures?

No. Armorock is not a coating, liner, or admixture. It is a fully corrosion-proof material from the inside out.

What sizes are available for Armorock structures?

Armorock structures are available in standard diameters ranging from 48 inches to 192 inches. Custom sizes and configurations are also available to meet specific project requirements.

installation

Why are Armorock structures lighter?

While polymer concrete itself weighs similar to concrete, Armorock structures are lighter due to their thinner walls. With a compressive strength of 11,000 psi, our structures do not have the additional thickness that is required of traditional concrete.

Are Armorock structures difficult to install?

Armorock Polymer Concrete structures install just like traditional precast concrete only lighter, saving money on lifting equipment and installation time.

Can I core into an Armorock structure in the field? Does this void the warranty?

Yes, Armorock structures can be field-cored using a diamond masonry bit. No, coring does not void the warranty. Our structures are engineered to maintain their integrity even when modified on-site.

Is Armorock onsite during installation?

Yes. Our Sales Managers, Account Managers, and Project Managers frequently attend job sites to assist contractors and ensure successful installations. It is part of our white glove service commitment.

industry standards

How long has polymer concrete been around?

Polymer concrete has been manufactured since the 1960s, primarily in Europe. In the U.S., it has been used since the 1980s, most commonly in large-diameter sewer interceptor pipes and other infrastructure applications.

Are Armorock structures traffic-load rated?

Yes. All Armorock structures are HS-20 load rated. There are no special bedding requirements or top/bottom loading slabs needed.

Can Armorock withstand high groundwater or buoyancy conditions?

Yes. We provide buoyancy calculations and flotation collars as needed for installations in high groundwater areas.

Is there an ASTM standard for polymer concrete?

Is Armorock polymer concrete manufactured in the United States?

Yes. Armorock is proudly American-made.

Armorock's 50-year corrosion warranty guarantees resistance to H₂S gas and corrosive environments. To date, no customer has ever needed to use the warranty—proving the long-term reliability of our material.