Concrete Strength Results: Graphene Additive Gives 67% Higher Compressive Strength in Third-Party Testing

Press release

At 5% by weight of cement, the graphene concentrate increased compressive strength by 67% and water resistance by 25% in independent third-party testing in 2023.

CHARLOTTE, NC — July 4, 2023 — Graphene Integrations has introduced a graphene concrete additive. In independent third-party testing in 2023, adding the graphene concentrate at 5% by weight of cement increased concrete compressive strength by 67%.

Ready to add

The additive is supplied ready to add, so it fits into existing batching and mixing. Results depend on the cement, aggregates, water-cement ratio and curing, so Graphene Integrations tests with each concrete producer in its own mix.

“A 67% gain in compressive strength at 5% by weight of cement is a strong result in independent third-party testing in 2023. The next step is proving it in our customers' own mixes, project by project.”

What the results mean

Higher compressive strength may give designers more options. Any change to a mix design, or to the amount of concrete used, should be confirmed by the project engineer with testing on that mix. Concrete with 5% graphene also increased water resistance by 25%. Long-term field durability still has to be shown project by project.

How a producer can test it

Producers start with a baseline mix design they already use. Graphene Integrations suggests a starting dose and quotes R&D samples. Test specimens are then cast with and without the additive, using the same materials, water-cement ratio and curing, and strength and water uptake are compared at the ages the producer normally tests. The results go to the project engineer before any design is changed. Graphene is supplied already dispersed in the liquid concentrate, so there is no dry graphene powder to handle. Mixing, storage and safety instructions are on the spec sheet and SDS supplied with the product.

What is not claimed

Graphene rebar is a separate effort that is in development. It is not a product yet, and no performance claims are made about it.

See the graphene concrete additive page, read how the additive works and what we tested, or request samples or a spec sheet.

Request a quote Learn about the graphene concrete additive →

About Graphene Integrations

Graphene Integrations, formerly Graphene America, is a US graphene manufacturer based in Charlotte, NC. The company makes graphene and supplies it pre-mixed in water, solvents, resins and oils, never as a dry powder, so manufacturers can add it to products and processes they already run. Its products are patent pending and made in the USA. Learn more about Graphene Integrations.

###