"However, the typical compressive strength is around 1 MPa, around 1/20 that of residential grade concrete. Hempcrete walls must be used together with a frame of another material that supports the vertical load in building construction, as Hempcrete's density is 15% that of traditional concrete. Like other plant products, the hemp crop absorbs CO2 gas as it grows, retaining the carbon and releasing the oxygen. 165 kg of carbon can be theoretically absorbed and locked up by 1 m3 of hempcrete wall over many decades."
Elsewhere I read that hempcrete can be more stronger than traditional concrete at less than 1/10 of the weight. And looks like it also has a selling point as a CO2 friendly resource for those concerned about environment. It also seems like way less water is needed to produce hempcrete than traditional concrete.
Also seems like there are hemp-bricks as replacement for wood, which are far far lighter than wood but better insulators and much cheaper.
Hemp alone can help recover the American economy and reduce reliance on oil and consequently help the entire world economy.
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