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The uses of cannabis in construction

By MikeZillo | Alternative knowledge | 8 Mar 2022


In the introductory article I spoke in general about the potential of cannabis in the medical field, and the necessary substances are extracted from the apical part of the plant.

And can the remaining part of the plant have a specific use?

Certainly!

Every part of the plant can have a specific use, especially in the construction of buildings and clothing.

The stem

The stem, or the structure of the plant, offers the possibility of obtaining two different products from its respective parts: fibres from the outer part and canapulo from the woody inner part.

The fibres can mainly be used to obtain yarns for textiles, bioplastics, paper and in some cases to replace synthetic fibres for the restoration of structures; here are some Italian examples of fibre applications in the textile sector

https://www.maekotessuti.com/eng/hemp/

https://www.altramoda.net/en/material/79102

Hemp is used in the building industry as an insulator.

Hemp in construction

The use of hemp in construction has brought enormous benefits, especially in relation to pollution.

The processing of this plant to obtain raw materials for the construction of building components has a really low environmental impact; we could even consider that hemp, from its birth until its use in construction, does not produce CO2, but transforms it thanks to photosynthesis.

As mentioned above, hemp stalk and fibres are obtained from the plant; these materials have two different uses in the building industry.

 

Canapulo

The inner part, reduced to shavings, has very high hygroscopic and insulating capacities; together with lime it can be used to make bricks, screeds and fill cavities as insulation.

The lightness of this material makes it suitable for the construction of floor screeds as it can be an excellent substitute for lightened aggregates for lightened screeds.

Its hygroscopicity is extraordinary as the material absorbs moisture when it is high and releases it when the environment tends to be dry: a natural solution to the mould that occurs in some homes.

The insulating power, both thermal and acoustic, benefits the healthiness of the home: there is always little talk of noise pollution, and it is very important to have materials which keep noise out.

Thermal insulation has many positive effects, starting with the elimination of thermal bridges (areas in which the cold outside is transmitted to the inside of the heated environment), which are increasingly often the cause of mould in the corners of rooms, energy savings and a reduction in CO2 production.

Some images of what can be achieved with canapulo

Hemp

hemp

Fibre

Fibre, which is found on the outside of the canapulo, is a very valuable material as it is extremely versatile.

Because of its resistance to stresses and strains, it is used in construction for structural reinforcement.

Hemp fibre replaces carbon fibre, glass fibre and steel fibre with almost no environmental impact.

The processing of the fibre is extremely simple and in many situations does not require synthetic materials to give it additional stability.

In most cases it is possible to combine hemp fibre with potato starch or natural glues.

The process of constructing the panels is quite simple: when the fibre is ready with the decided binder, all that needs to be done is to press it at a high temperature.

The panels thus obtained can be used to make insulating coats (internal or external) and insulating panels for attics.

It is also possible to obtain plaster nets (shaving nets).

Here are some examples of building components obtained with hemp fibre

Hemp   HEMP fibre = Panels for thermo-acoustic insulation

 

Hemp Nets: plaster holder

Processing

Another extremely important aspect of hemp is the environmental impact of processing the raw material to obtain the various derivatives.

In the diagram below, two very significant figures are immediately apparent: the negative value on CO2 production and the amount of water required for the production chain, which is the lowest of all the cases examined.

Hemp

Conclusions

As we have seen, hemp, thanks to its intrinsic properties, is widely used in construction.

But it is not only theory, there are many buildings made with this material and the functional characteristics are really first class.

The buildings are all over Europe, the most famous being in Italy and France.

In Italy, houses have been built with 90% European funding because of the extraordinary seismic resistance of the structure.

In 2012, following the earthquake in Emilia-Romagna, which reached 6° on the Richter scale, a house built a few years earlier did not suffer any surface or structural damage.

This resistance is mainly due to the elasticity of the structure, which is completely made of wood, and the hemp and lime brick infill.

HempHousing built in San Giovanni in Persiceto - Italy

 

Hemp"An amazing house is made of hemp and resists shocks"

In Bisceglie, Apulia, an entire building with 40 residential units and commercial spaces has been constructed.

Below is a photograph

Hemp

Here are some European constructions

Hemp     ARAGON - SPAIN

 

Hemp         PENKER - FRANCE

This type of construction is having a great response for the thermal characteristics of hemp.

In the photo below we can see how at an outside temperature of 35°, inside the house we can have 22° without any cooling equipment activated.

Hemp 

The extraordinary insulating power of this material can be seen in the graph below: the internal temperature: the graph is quite clear and immediately gives us an idea of the efficiency of hemp as an insulator: the thermal delta settles in a handful of degrees centigrade even in rather significant temperature ranges (between 19 and 20 May we have a range of almost 10°!

Hemp

The same applies to humidity. In the graph below we can see how the relative humidity is maintained inside the house.

And that's not all.

The range is also lower than the standards for a healthy environment: 60% is the limit prescribed, while it remains between 55 and 58%.

Hemp

 

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MikeZillo
MikeZillo Verified Member

Daily Trader, Mining Farm Project Manager, Blockchain consultant, Cryptocurrency evangelist. You can find more videos here https://www.youtube.com/channel/UCvyXx6I1C__zmLAYUXNZwQQ? Telegram: @mikezillo


Alternative knowledge
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