Monday 10 November 2008

Hemp Applications #2

The hemp lime is an environmentally friendly construction material that presents several advantages in its application.

It's 7 times stronger than concrete, has half the weight and it's much more elastic which provides more flexibility in their use. Studies indicate that per m 2 of concrete, are released 200kg of CO 2 , which represents, in developed countries, almost half of the annual emissions of this greenhouse effect gas. Moreover for each m 2 of hemp lime applied, 23kg of CO 2 are removed of the atmosphere (CO 2 set over the life of the plant).

There are several brands that sell this product in Europe:

Hemcrete, Canobiote, Canosmose

With a thermal conductivity of λ = 0.07W / mk and a resistance after 90 days of 0.9Mpa, the great disadvantage of hemp lime is the price of around 107 euros per square 3 .


A detailed technical description can be found at:

http://www.backtoearth.co.uk/downloads/hemcrete_detailed.pdf (English)

Here is a list of some producers of cement hemp:

http://www.chanvre.oxatis.com /

http://www.limetechnology.co.uk/home/index.php

http://www.hempsteads.com/hempcrete.htm

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