CARBON NEGATIVE MATERIAL
Like other plant products by photosynthesis, hemp absorbs CO2 from the atmosphere as it grows, retaining the carbon and releasing the oxygen. This process is called carbon sequestration, and involves the capture of carbon and the long-term storage of atmospheric carbon dioxide. It has been proposed as a way to slow the atmospheric and marine accumulation of greenhouse gases.
Even when the hemp shiv is mixed with concrete (80-90% of hemcrete composition as hemp shiv), it is able to still sequester CO2. The lime-based binder absorbs carbon from the air continuously over time, petrifying the hemp shiv. Each tonne of lime-based hempcrete is estimated to absorb and sequester 249 kg of CO2 over a 100 year lifecycle. Generally, hempcrete is estimated to sequester 110kg per cubic meter (depending on transportation use) which means large-scaled projects have the capabilities of drawing tonnes of CO2 out of the atmosphere.
Yes!!!
https://www.mindfulwellness.us/community/hempcrete-carbon-negative-building-material