A Fireproof Board Made from Sawdust and a "Smart" Mineral

Published on March 20, 2026 | Translated from Spanish

The search for more sustainable and safer construction materials takes a step forward. A team of researchers has created a new fire-resistant material using an abundant resource: sawdust. The key lies in its binder, a mineral called struvite, whose crystallization is controlled through a bioinspired process. The result is a robust and recyclable composite with remarkable fireproof properties.

A light brown board, granular texture of compact sawdust, with shiny struvite crystals embedded. A blue flame slides across its surface without burning it, leaving only a faint trail of smoke.

The role of a watermelon enzyme in crystallization 🔬

The process is based on the urease enzyme, extracted from watermelon seeds. This enzyme controls the reaction that forms struvite, allowing its crystals to grow in an orderly manner and fill all the spaces between the wood particles. This mineral bond generates a solid structure. When exposed to fire, struvite decomposes endothermically, releasing water vapor and ammonia. This phenomenon cools the surface and displaces oxygen, effectively slowing the spread of flames.

When the partition decides to act as its own firefighter 🧯

It's an interesting twist: your partition would no longer be just a space divider, but an active safety element. Imagine that, in the face of a small fire, instead of feeding the flames, the wall starts releasing a refreshing vapor and smothering the fire out of boredom, by taking away its air. Leave behind the idea of a material that only burns with dignity; this one prefers a more dramatic chemical reaction, as if it had an internal emergency mode button.