Today, hemp bricks are being used to build eco dwellings in the Province of Granada http://www.biocarburanti.org, Spain. Hemp as an industrial product has been around for thousands of years. After a period of lessen, 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 epithet for floras of the cannabis genus. Hemp often refers to the strivings of the weed fostered alone for industrial use as opposed to cannabis which is associated with bowl and similar drugs.
Hemp has a huge variety of applications but continues to be overshadowed by the cannabis meaning of illegal drugs, with which it is often muddled. However, hemp can legally be flourished, under permission, in many countries, including the European Union countries and Canada.
Cannabis sativa L. is the variety chiefly changed for industrial purposes, it is a fast growing flower and has been raised for many thousand of years being used to prepare rope, garb, newspaper, hemp oil and medicines. Growing hemp improves the condition of the ground and abbreviates ambient pollutant. It is a robust embed that requires neither herbicides nor pesticides during its cultivation.
Hemp as an industrial information has a ten thousand year autobiography. The first entered exert of hemp was as a cloth textile, found in China as far back as 8000 BC.C. Circa 4000 B.C. hemp started to be used, again in China, to stimulate lines and as menu. 2000 years later, the Chinese hemp lubricants and medicine were in use. By 1000 B.C. its employ had spread to India and Greece where the first instances of hemp article were found.
By the 6th century, hemp was being employed in Europe in some surprising roads, in France a hemp reinforced aqueduct was improved, and it is still in use today. The hemp fiber also obtained operations in sailmaking, caulking substances, fishing cyberspaces and words. Later hemp was used to make a kind of butter and even brew. By the 15 th century, Renaissance painters were exerting hemp canvases.
Today industrial hemp is used to make a tremendous various forms of concoctions wandering from medicines, mas caution makes, build and insulating materials, garb, textiles, menu, ga, sheep nutrient and pillow, plastics and paper.
In the construction industry hemp bricks, because of their sustainability and superb insulation belongings, are being used to construct external and internal walls of dark-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 honour of Cannabric( r ).
Cannabric( r) derives its qualities from industrial hemp fibers( canamo ). The hemp bricks are made up of industrial hemp fibers, slaked lime and a mixture of inert mineral textiles. The blocks combine the terms of reference of a consignment carrying wall that is fire-resistant and does 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) used to produce brick with enormously superior isolation qualities against both freezing and hot. The mineral factor of the bricks pays them their mechanical concentration. Being a solid brick, with a high specific heat, it has the optimal thermal owneds to protect against heat.
These features constitute hemp bricks the ideal pick in areas of southern Europe where there are extremes in temperature through summer and winter.
The mechanical strong of the obstruction starts with the formation of insoluble hydrates. The persuasivenes increases over era with the carbonation of the free lime,( a ingredient of slaked lime) by humidity and carbon dioxide present in the air. Another important factor in the progressive curing of the eco-bricks is the steady petrifaction of the industrial hemp by the lime and minerals found in the bricks.
Due to its unique arrangement, the hemp bricks stand the transpiration and diffusion of water vapor between the inside and outside of the building equalizing humidity within the building thus avoiding sultry and cold areas and minimise distillation on the inside wall surfaces.
Slaked lime acts as the binder, mostly regarding the brick together, but it has other uses. On one back it protects against sweat by closing any holes and foreclosing the introduction of water on external skin-deeps exposed to torrent. On the other mitt, 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 deliciou, favourite cave residences of this area of Andalusia are naturally ecological in that they are re-developed from ancient dilapidated cave mansions. Where ever possible construction sites information consumed are repaired from ramshackle assets that have been demolished. 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 thriving arena. With the invention and development of nylon and related makes, coupled with the end of the Franco area and raise mechanization the primary agriculture of the region fell apart hurling gigantic numbers of beings out of work. The population of numerous hamlets dropped by seventy-five percentage or more, most of the dwellers moving to the coast and major metropolitans in search of work.
As a result of these harrowing a difference in demographic the remaining population was chiefly aged, the village’s incomes fallen to near poverty level, and countless empty-bellied homes fell into disrepair.
Most of the land workers who moved away lives in cave residences which are now being revitalized by the growing demand for eco-properties.