- 1/5th the cost of conventional construction.
- Replaces 40% of the NHAB listed costs for a single family house (slab, walls, exterior, roof, waterproofing)
- Premium product ( doesnt burn in wildfires, doesnt rot, resists hurricanes ) 9% of American single family houses are concrete (belonging to wealthiest counties)
So we can make housing cheap. But how can we also reduce the CO2 in the atmosphere?
- Building materials like concrete are billions of tons per year. If we can sequester in buildings, that could be a realistic sink of billions of tons of CO2.
- Bubbling air into water creates carbonic acid.
- Aerated cement (Aircrete) is a porous cement product that provides nucleation sites
- Carbonic acid in a mix with cations ( such as ca+ or mg+) will mineralize sequestering the CO2 and also creating dense/strong building materials.
- Brine wells are a low CO2 source of cations ( cacl2, etc)
- Allowing 30 years for sequestration means the direct air capture powered by solar panels with a small air pump can be inefficient and take 30 years.