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Makes Z12, a carbon-negative concrete additive that sequesters CO2 while improving concrete strength and durability, designed to integrate with existing production methods

Low-Carbon MaterialsEarlyGolden, COFounded Undisclosed (recent)

The interesting angle

Led by CEO Howard Janzen with Colorado School of Mines ties; completed its first municipal pilot with the City of Golden, achieving a 42% carbon reduction on a residential retaining wall, curb, and gutter pour; lead researcher represents the company on the ASTM C09.28 Subcommittee working to establish the first-ever industry standard for biochar in concrete

Related in Low-Carbon Materials

Last updated August 2026Sources: [1][2][3][4][5][6]

Snapshot

Funding
Early stage (specific amount undisclosed)
Stage
Early
HQ
Golden, CO
Founded
Undisclosed (recent)
Target customer
Concrete producers, municipalities, construction industry

HQ location

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