Posts Tagged ‘hempcrete’

Hempcrete Spraying

Sunday, June 22nd, 2008

You may have read my article about hempcrete and its various implementations (such as Hemcrete, Canobiote, Canosmose, Isochanvre).

Hempcrete is basically an eco-friendly alternative to concrete. Not only is hempcrete more environmentally friendly, but it is stronger than concrete, less prone to cracking, and about half the weight of concrete. Using hempcrete in buildings makes sense in more ways than one.

Hempcrete is usually mixed on site, then sprayed directly onto the building frame.

The following video shows hempcrete being sprayed onto a building frame. I decided that, since I’ve already written about hempcrete, I may as well link to this You Tube video.

Hempcrete: The Future of Concrete?

Saturday, February 2nd, 2008

Did you know that more concrete is made each year than any other man-made material? It’s second only to water as the most consumed substance on the planet. It’s been reported that each year, more than one ton of concrete is produced for each person on earth!

Hempcrete is being billed as an eco-friendly alternative to concrete. Hempcrete is a generic term for a hemp-based building material that can be used in place of concrete. It consists of a mixture of hemp, lime, sand, plaster, and cement, and can be used in the same way as concrete.

There are a number of trademarked variations for hempcrete. Here are some of them:

Hemcrete

Hemcrete, or Tradical Hemcrete, is a trademarked version of hempcrete produced by Lime Technology in the UK.

Canobiote

Canobiote consists of hemp hurds coated with mineral salts. Canobiote is intended to provide insulation for wood-framed, closed lofts and floors . It’s particularly ideal for those that receive regular use.

Canobiote was patented by a group called La Chanvriere de L’Aube (LCDA). LCDA is a French company that specializes in production and processing of industrial hemp. Established in 1973, LCDA works together with many hemp farmers located in Champagne - the vineyard region in Eastern France.

Canosmose

Also patented by LCDA, Canosmose is a light-weight concrete made with hemp hurds and natural lime. Canosmose is intended for non-load bearing masonry, such as walls sectioned with wooden supports.

Isochanvre

Isochanvre was created by France Périer, who previously worked for LCDA promoting Canobiote. Like Canobiote, Isochanvre is typically used for acoustic and thermal insulation. It is also increasingly being used as a construction material.

The Difference?

These products appear to be quite similar. Isochanvre and Canobiote are slanted towards insulation, while Canosmose and Hemcrete are promoted as a construction material.

As with many proprietary products, it’s not absolutely clear what the technical difference is between these products. What we do know is that they are all hemp-based, and used for housing construction. We also know that hempcrete has some great benefits over concrete.

The Future of Concrete?

Who knows what the future of concrete will be. Given the sheer scale of the concrete industry, I think it’s unlikely that one solution will completely replace concrete. I suspect we’ll see more and more environmentally friendly versions of concrete. Hempcrete will be one of the many. But one thing’s for sure; hempcrete won’t make any headway in the U.S. until the U.S. government finally recognizes hemp for its outstanding potential.

You say “Hemcrete”, I say “Hempcrete”

Friday, February 1st, 2008

I recently raved about the environmental benefits of hemp. I also compiled a list of various ways hemp is being used around the world. There’s no doubt to the versatility of this fiber.

One industry that is reaping the benefits of hemp is the building industry. Sustainable housing is becoming more and more important and hemp can certainly step up to the mark.

There are many applications of hemp in the building industry. It can be used for insulation, fiberboard, stucco and mortar and more. The use of hemp in the building industry has even sparked a new word - hempcrete.

What is Hempcrete?

Put simply, hempcrete is an eco-friendly alternative to concrete. It consists of a mixture of hemp, lime, sand, plaster, and cement, and can be used in the same way as concrete. Hempcrete is typically mixed on site, then sprayed on to the building frame. Hempcrete can also be used for making pipes.

Hempcrete is self insulating. It’s resistant to rotting, mice, rodents, etc. It is also fireproof, waterproof, and weather resistant.

Hempcrete actually has some pretty cool benefits over concrete too.

Benefits of Hempcrete

Hempcrete has a number of environmental benefits over concrete. It also has a number of general benefits too.

General Benefits

Here are some of the general benefits of hempcrete over concrete:

  • Stronger: Hempcrete is said to be 7 times stronger than concrete
  • Lighter: Hempcrete is about half the weight of concrete
  • Less cracking: Hempcrete is more elastic than concrete, which means it is less prone to cracking

Environmental Benefits

Using hempcrete instead of concrete can drastically reduce carbon emissions produced by our buildings.

In the UK for example, the construction and ongoing use of buildings accounts for over 50% of of carbon dioxide emissions. Studies have shown that, for each square meter of house walling, up to 200 kilograms of carbon dioxide is emitted from its construction. This works out to be around 40 tonnes of carbon dioxide emitted for a typical house.

Hempcrete, on the other hand, can actually remove carbon dioxide from the air, and trap it within the wall construction. The producers of Tradical Hemcrete claim that it has been found to lock up around 110 kilograms of carbon dioxide per m3.

So, which is it? “Hemcrete” or “hempcrete”?

Both! Hempcrete (with a “p”) is the generic name for the product. Hemcrete (without the “p”), is a proprietary version of hempcrete. Its full name is Tradical® Hemcrete®, and it’s a registered trademark of Lime Technology in the UK.

60 Ways to use your Hemp

Thursday, January 31st, 2008

Hemp is an extremely versatile plant with enormous environmental benefits. It can be used in a wide variety of applications.

It’s no wonder that companies such as Ford, BMW, Mercedes, The Body Shop, Calvin Klein, and many more are turning to hemp so that they can create more eco-friendly products.

Here are 60 examples of how hemp is being used around the world:

Paper

  • Printing paper
  • Specialty paper
  • Cigarette filter paper
  • Coffee filter paper
  • Newsprint
  • Cardboard
  • Packaging

Foods

  • Cooking oils
  • Salad dressing/oils
  • BIO-EFA food oil
  • Margarine
  • Vitamins/Food supplements
  • Granola
  • Bird seed
  • Flour (protein enriched, gluten-free)

Body Care

  • Soap
  • Shampoo
  • Bath/shower gels
  • Hand cream
  • Cosmetics
  • Moisturizing lotions
  • Balms

Consumer Textiles

  • Apparel
  • Bags
  • Shoes
  • Socks
  • Denim
  • Diapers / Nappies
  • Fabrics

Industrial Textiles

  • Canvas
  • Rope
  • Twine
  • Nets
  • Tarpolans
  • Carpet
  • Geotextiles
  • Brake/clutch linings
  • Caulking (i.e. sealing the seams in boats or ships to make them watertight)
  • Agro-fiber composites

Industrial/Technical Products

  • Oil paints
  • Varnishes
  • Printing ink
  • Fuel
  • Solvents
  • Lubricants
  • Putty
  • Coatings
  • Molding
  • Chemical Absorbent
  • Mulch
  • Pultrusion
  • Biocomposite
  • Animal bedding
  • Ethanol/biofuel
  • Erosion control

Building Materials

  • Fiber board
  • Insulation
  • Fiberglass subsitute
  • Hempcrete
  • Stucco and mortar

This list is not exhaustive - I’ve heard that there are over 25,000 known uses for hemp. Feel free to name some more!