Today, hemp bricks are being used to build eco residences in the Province of Granada www.biocarburanti.org/, Spain. Hemp as an industrial produce has been around for thousands of years. After a reporting period reject, it is now beginning to show a re-emergence in this eco-age as a sustainable house product.
Hemp comes from the Anglo-Saxon word ‘haemp’ and is the popular honour for floras of the cannabis genus. Hemp often refers to the strainings of the bush cultivated alone for industrial use as opposed to cannabis which is associated with pan and same drugs.
Hemp has a huge variety of works but continues to be overshadowed by the cannabis meaning of illegal drugs, with which it is often flustered. However, hemp can legally be developed, under license, in many countries, including the European Union countries and Canada.
Cannabis sativa L. is the variety chiefly germinated for industrial purposes, it is a fast growing seed and has been cultivated for numerous thousand of years being used to utter tether, clothing, paper, hemp oil and drugs. Growing hemp improves the condition of the floor and abbreviates ambient taint. It is a robust weed that requires neither herbicides nor pesticides during its cultivation.
Hemp as an industrial information has a ten thousand time autobiography. The first preserved employ of hemp was as a cloth cloth, may be in China as far back as 8000 BC.C. Circa 4000 B.C. hemp started to be used, again in China, to manufacture tethers and as meat. 2000 year later, the Chinese hemp petroleums and prescription were in use. By 1000 B.C. its usage had spread to India and Greece where the first instances of hemp newspaper were found.
By the 6th century, hemp was being be used in Europe in some surprising practices, in France a hemp buttressed connect was constructed, and it is still in use today. The hemp fiber too met implements in sailmaking, caulking substances, fishing cyberspaces and courses. Later hemp was used to make a form of butter and even beer. By the 15 th century, Renaissance painters were working hemp canvases.
Today industrial hemp is used to make a tremendous variety of makes ranging from drugs, organization maintenance concoctions, house and insulating materials, garb, textiles, nutrient, gasoline, livestock food and bedclothe, plastics and paper.
In the construction industry hemp bricks, because of their sustainability and superb isolation qualities, are being used to construct external and internal walls of green residences. In this area of Spain, the outer walls of an eco-house will consist of an eco-bricks, manufactured in Guadix with the proprietary list of Cannabric( r ).
Cannabric( r) derives its properties from industrial hemp fibers( canamo ). The hemp bricks are made up of industrial hemp fibers, slaked lime and a mix of inert mineral fabrics. The chunks combine the terms of reference of a consignment permitting wall that is fire-resisting and is not involve the additive of thermal or acoustic insulation.
The most important component of the eco-brick is industrial hemp which has a very low thermal conductivity( 0.048 W/ m2k) producing a brick with enormously superior insularity assets against both cold and heat. The mineral factor of the bricks affords them their mechanical fortitude. Being a solid brick, with a high specific heat, it has the optimal thermal belongings to protect against heat.
These attributes stir hemp bricks the ideal hand-picked in areas of southern Europe where there are extremes in temperature through summertime and winter.
The mechanical fortitude of the chunk begin with the process of creating insoluble hydrates. The backbone increases over meter with the carbonation of the free lime,( a ingredient of slaked lime) by moisture and carbon dioxide present in the air. Another important factor in the progressive cure of the eco-bricks is the gradual petrifaction of the industrial hemp by the lime and minerals found in the bricks.
Due to its unique arrangement, the hemp bricks permit the transpiration and diffusion of ocean vapor between the inside and outside of the building equalizing humidity within the building thus avoiding humid and freezing the regions and minimizing distillation on the inside wall surfaces.
Slaked lime acts as the binder, basically harbouring the brick together, but it has other uses. On one surface it protects against humidity by closing any holes and avoiding the entering of spray on external surfaces exposed to sprinkle. On the other handwriting, it provides protection for the industrial hemp fibers against fungal and parasite attack.
The hemp bricks when laid endwise are for the construction of external walls thirty centimeters thick. The internal walls built with hemp bricks are thinner being half the thickness. The delectable, favourite cave residences of this field of Andalusia are naturally environmental in that they are re-developed from ancient dilapidated cave homes. Where ever probable the construction materials consumed are repaired from derelict assets that have been razed. This recycling reduces the environmental impact.
It is ironic that this area of Spain, the Altiplano, until the late nineteen sixties, was renown as an industrial hemp flourishing arena. With the fabrication and development of nylon and related commodities, coupled with the end of the Franco area and farm mechanization the primary agriculture of the place fell apart shedding immense numbers of beings out of work. The population of many hamlets dropped by seventy-five percentage or more, most of the inmates moving to the coast and major municipalities in search of work.
As a result of these traumatic a difference in demographic the remaining population was mainly aged, the village’s incomes dropped to near poverty level, and countless empty-bellied mansions fell into disrepair.
Most of the land workers who moved away lives in cave lives which are now being revitalized by the growing is asking for eco-properties.