Rayo 3D Biotech Oy has initiated third‑party testing of InLiq Concrete, a biobased additive in collaboration with 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 stage compares InLiq Concrete both a) against and b) in combination with mixes containing a commercial high‑performance PCE superplasticizer. Promising 1 day - results indicate that InLiq Concrete is also compatible with the selected high‑performance PCE superplasticizer. 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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