Prometheus Bio-Cement Rates 12x Better for Sound Absorption

 Seagriculture EU 2024
Prometheus Bio-Cement Better for Sound-Absorption

Prometheus Materials’ initial pre-cast bio-concrete product line includes masonry units, segmented modular block, paving stones, grass pavers, and acoustic panels.

C​olorado-based Prometheus Materials has developed a process that combines microalgae with other natural components to form zero-carbon bio-cement and bio-concrete, providing superior alternatives to traditional carbon-intensive portland cement. The company has recently announced results in the ASTM C423 sound-absorption testing of its innovative technology.

The Johns Manville Technical Center in Littleton, Colorado — a world-class research and development facility — conducted the independent testing, which found that Prometheus Materials’ bio-concrete demonstrated a Noise Reduction Coefficient (NRC) of 0.60. This NRC rating indicates 60% sound absorption — twelve times that of traditional concrete.

Prometheus’ initial pre-cast bio-concrete product line includes masonry units, segmented modular block, and acoustic panels — where this sound-absorption characteristic will be an essential feature — as well as paving stones and grass pavers. These products are currently available strictly for select projects, with commercial availability slated for the first half of 2024.

Noise Reducing Applications

In settings where noise can be damaging or distracting, builders are often forced to rely on secondary products to achieve some measure of noise reduction. Beyond the added expense, these materials can sometimes have negative effects, including health risks.

With Prometheus’ bio-cement and bio-concrete products, facilities can incorporate sound-absorption capabilities without additional cost, safety concerns or other drawbacks. Residential, commercial and institutional buildings, amphitheaters, music studios, highway barriers, and a vast array of other end-uses can benefit from this noise-reduction capability, while concurrently reducing their carbon footprint. 

“Our latest ASTM testing results embody our commitment to innovative design,” said Loren Burnett, President, CEO & Co-founder of Prometheus Materials. “We’ve developed a novel material that provides a zero-carbon alternative to traditional concrete while delivering additional performance benefits and applications. We’re proud to pave the way toward a more technologically advanced and environmentally responsible future for the construction industry.”

Seagriculture USA 2024



  • April 22, 2024: New England Kelp Harvest Week, a project started by the Sugar Kelp Collective in 2021, runs from April 20-30 this year. The group of kelp farmers and activists works with restaurants, bakeries, and fish markets to create special dishes and menus that use the sea vegetable, which grows in winter and is harvested in the spring. Across Connecticut, this provides an ideal opportunity for people to explore dishes and cocktails made with kelp. READ MORE...
  • April 19, 2024: Hospitalized COVID-19 patients who took spirulina had a lower risk of death than those who did not, according to results of a randomized controlled trial recently published in Frontiers in Immunology. READ MORE...
  • April 17, 2024: A research team exploring the untapped potential of seaweed farming for carbon sequestration is positioning Taiwan to play a role in offsetting global carbon emissions. READ MORE...
  • April 15, 2024: Somater, a French manufacturer of plastic and polymer primary packaging for cosmetics, pharmaceuticals, food, and industry, has partnered with French start-up Eranova to create a 100% bio-based line of packaging from green algae collected on the banks of a brackish water lagoon near Marseille, in the south of France. READ MORE...

Algae Europe 2024

A Beginner’s Guide