Displaying items by tag: biocement

US: Prometheus Materials' microalgae-based biocement has demonstrated 12 times greater sound absorption than ordinary Portland cement (OPC). Prometheus Materials produces its biocement at ambient temperature, with no process CO₂ emissions.

Egypt: Researchers at the University of Cairo have used nanomaterials from agricultural wastes to produce biocement with 'increased strength and durability' compared to ordinary Portland cement (OPC). The study employed microbially induced calcite precipitation (MICP) with the addition of carbon nitride nanosheets and ash from waste maize cobs. Besides its improved physical performance, the researchers also found that their biocement offers improved endurance against water permeability.

US: Prometheus Materials’ microalgae-based biocement has secured certification for use in concrete masonry unit (CMU) mixes. The cement now holds an ASTM C129 certificate for use in non-loadbearing CMUs and an ASTM C90 certificate for use in loadbearing CMUs. Prometheus Materials’ biocement produces concrete with comparable or superior mechanical, physical and thermal properties to ordinary Portland cement (OPC)-based concrete. It offers little-to-no CO₂ emissions and 95% of water used in production is recycled.

Prometheus Materials CEO Loren Burnett said “We are thrilled to have achieved these two foundational certifications as we proceed in full force with our goal of decarbonising construction. Prometheus Materials’ product is poised to change the future of construction, converting one of the most carbon-polluting industries to a low-carbon – and one day net-zero carbon – reality.”

US: Prometheus Materials has been awarded ASTM C129 certification for non-loadbearing concrete masonry units (CMU) and ASTM C90 for loadbearing CMUs for its bio-cement product. The company is commercialising a process to produce cement and concrete using microalgae.

Loren Burnett, the chief executive officer of Prometheus Materials, said “We are thrilled to have achieved these two foundational certifications as we proceed in full-force with our goal of decarbonising construction.” He added, “Prometheus Materials’ product is poised to change the future of construction, converting one of the most carbon-polluting industries to a low-carbon – and one day net-zero carbon – reality.”

Find out more about Prometheus Materials in the October 2022 issue of Global Cement MagazinePrometheus Materials in the October 2022 issue of Global Cement Magazine

Signapore: Researchers at the Nanyang Technological University in Singapore (NTU Singapore) have successfully used bacteria to combine two abundant waste streams into clinker-free biocement. NDTV news has reported that the scientists developed the material from by combining calcium ions with urea in a mixture of industrial carbide sludge and urine. The process takes place at room temperature, reducing CO₂ emissions while also offering waste management benefits.

The NTU Singapore team is presently testing the biocement on artificial beaches. It will subsequently investigate other possible large-scale applications around Singapore.