The growing concerns around the rising carbon emissions insisted the leaders make efforts to prevent the ill-effects of global warming and climate change. This led to the resurrection of the organic concrete building materials that can segregate carbon, and are renewable sources of energy. Hemp Concrete is a variety of organic concrete that is the most widely researched building material in the current times.
Is Building With Hemp A New Phenomenon?
Well, it seems likely that human beings would have hemp for millennia for so many uses without using it in their buildings. However, it is quite unlikely that physical evidence of such use in ancient times would survive. The reason is, plant-based material will eventually decay. But, today, more and more people are interested in hempcrete. It is a low-impact building material that allows them to build their dream home without leaving any adverse effects on the environment.
In the United Kingdom, commercial, as well as residential buildings, have now been built using hemp. But, a notable upsurge in the use of hemp building material came with the Renewable House Programme. This program was funded by the UK government between 2007 and 2010. This scheme provided the developers with funds to create social housing using renewable materials.
Hemp Fiber-An Alternative To Concrete
Hempcrete is a lightweight, concrete-like material with insulation properties that can be poured into the molds, and used in the blocks. It is made by mixing by mixing the hurds. And, the woody core left after the fiber is stripped off. Made from hemp shivs (waste material from hemp fiber growing), and lime, it can be used for floors, walls, and roof insulation. It absorbs and emits moisture to avoid the trapped moisture and mold growth, and regulate humidity. Hemp for construction use forms a small but growing proportion of the output from hemp farming.
Developed in France in the mid-1980s, Hempcrete became popular when people were in search for a permanent replacement for wattle and daub in timber-frame buildings. At that time, awareness was growing across Europe about the damage done to the buildings in the post-war period using ordinary Portland cement.
Thus, a replacement that would preserve the vapor-permeable nature of the building’s fabric was sought. It was discovered that the stem of the hemp plant was an ideal aggregate for lime mortars to achieve this effect. It is highly durable and contains strong cellulose.
A hempcrete has a great ability to absorb and release moisture-thanks to the cellular structure of the hemp stalk, and matrix structure formed by the individual pieces of hemp in the wall.
Moreover, the density lime binder adds to the wall gives the finish material an adequate amount of thermal mass. As this technique developed for repairing the historic buildings, people started experimenting with it for creating a sustainable new build. Eventually, they found that the material was suitable for this application.
Specialized Farming Equipment Are Used In The Hemp Industry Today
With the passing of the Farm Bill, the evolving hemp industry has seen a boom in production and revenue. From building and textiles to several health products containing CBD, some companies even use hemp as a source of biomass energy.
The hemp harvesting equipment is a bit complex and uses technology from different disciplines. One requires substantial agricultural knowledge, as the type of machine used depends upon precise growing methodology. Seed drill, transplanter, combine, hemp harvester, etc., are some of the equipment used in the farming process.
To Sum Up
Hempcrete is a natural building material that can be locally produced. It sequesters carbon dioxide and keeps it away in the environment. As the lime absorbs carbon emissions, hempcrete hardens over time, and make the building last longer without needing any expensive repairs.