Rayo 3D Biotech Oy has initiated third‑party testing of InLiq Concrete, a biobased additive in collaboration with Mitta Ltd, an accredited materials‑testing company in Finland. The program began in the 27th of January 2026. In addition, Rayo 3D Biotech Oy engaged a senior concrete‑industry advisor to support and guide the whole testing process.

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Testing Program Overview

The testing program focuses on compressive‑strength development at three standard intervals: 1 day, 7 days, and 28 days. It is structured into multiple phases to evaluate InLiq Concrete under different comparative conditions. Throughout the program, we are using a commercial blast‑furnace slag (SCM) and a commercial cement mix common in Finland. We have defined three control groups, each containing a different replacement level of cement with blast‑furnace slag.

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First Testing Phase

In the initial phase, the only liquid the control mix contained was water. Mixes incorporating InLiq Concrete show a clear improvement in compressive strength compared to water‑only mixes at all standard testing intervals. Overall, the results demonstrate also that InLiq Concrete performs well with the commercial blast‑furnace slag (SCM).

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Second Testing Phase

The second phase began on the 18th of February and is still ongoing. This phase will continue with additional test groups, including scenarios where a significantly larger proportion of cement is replaced with blast‑furnace slag.

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Further Testing Phases

Additional evaluations are underway using selected industrial waste materials to explore circular‑economy opportunities (other SCMs) and assess the commercial potential of InLiq Concrete in sustainable construction applications.

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