
Carbon Negative Solutions utilizes multi-objective AI optimization to transform industrial waste into high-performance, carbon-negative supplementary cementitious materials (SCMs). This process effectively doubles both revenue and CO2 reduction compared to traditional mineralization methods. Their flagship product, SlagZero™, offers a -0.16 GWP rating, allows for 30% cement replacement, achieves over 6000psi compression strength, and results in a 36% GHG reduction in concrete. The company aims to address the significant environmental impact of the cement and concrete industry, which accounts for 8% of carbon emissions and 30% of solid waste. Carbon Negative Solutions positions itself as a solution to the growing climate crisis, aligning with global efforts like the Paris Agreement.

Carbon Negative Solutions utilizes multi-objective AI optimization to transform industrial waste into high-performance, carbon-negative supplementary cementitious materials (SCMs). This process effectively doubles both revenue and CO2 reduction compared to traditional mineralization methods. Their flagship product, SlagZero™, offers a -0.16 GWP rating, allows for 30% cement replacement, achieves over 6000psi compression strength, and results in a 36% GHG reduction in concrete. The company aims to address the significant environmental impact of the cement and concrete industry, which accounts for 8% of carbon emissions and 30% of solid waste. Carbon Negative Solutions positions itself as a solution to the growing climate crisis, aligning with global efforts like the Paris Agreement.
Location: Somerville, MA (444 Somerville Avenue)
Product: SlagZero™ — carbon-negative supplementary cementitious material (SCM)
Tech: Multi-objective AI optimization for converting industrial waste into SCMs
Impact claim: -0.16 GWP for SlagZero™; enables 30% cement replacement and 36% GHG reduction in concrete
Team size: 4 employees
Cement and concrete decarbonization; industrial waste valorization
Climate tech / advanced materials / construction materials
Reported participation/portfolio inclusion with Third Derivative (non-equity support)
“Participation in accelerator/program cohorts and non-equity backing from Third Derivative”