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    • President Trump Signs Historic 867 Billion 2018 Farm Bill
    • Oregon Senator Wyden Addresses Hemp History Week
    • HempTek Goes To Washington DC on Hemp Lobby Day
    • VoteHemp Delegation Advocates in Washington for Hemp Farming Act 2018
  • HempFacts
    • Factoid #15 – Five Godly Facts You Didn’t Know About Hemp
    • Hemp Factoid #1 – Over 10,000 Years Old
    • Hemp Factoid #2 – Protein Source
    • Hemp Factoid #3 – Canvas from Cannabis
    • Hemp Factoid #4 – A History Lesson in Medical Marijuana
    • Hemp Factoid #5 – Henry Ford’s Hemp Car
    • Hemp Factoid #6 – George Washington grew Hemp
    • Hemp Factoid #7 – Popular Mechanics and the Billion Dollar Crop
    • Hemp Factoid #8 – Cannabis Concrete? The Next Generation Building Material
    • Factoid #9 Hemp vs Trees
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Home›Articles›Factoid #8 – Cannabis Concrete? The Next Generation Building Material

Factoid #8 – Cannabis Concrete? The Next Generation Building Material

By Mason Blair
June 9, 2017
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Did you know that Hemp can be made into mortar and brick to build homes? Today, more and more eco-friendly contractors are turning to this remarkable plant for more than just food and fabric.

Also referred to as hempcrete, limecrete, and hemplime is a bio-composite material the use of this ‘textile block’ is durable and has some superior insulation properties. It is just as easy to make as conventional concrete which bonds exceptionally well to lime, a key ingredient in cement. A basic hempcrete recipe consists of is 4-1-1 mixing ratio. Four parts industrial hemp hurd to one part lime-based binder, to one part water. Water is mixed with dried hemp hurd (the inner core of the hemp stalk) first so that it can reconstitute itself and adhere to the lime molecules. The mixture is then used to fill block and brick molds for drying. It can even be used as a stucco application. Setting and drying will fluctuate depending on the temperature and humidity of the day.

Hempcrete, if mixed properly, is mold resistant, pest resistant, and fire retardant with amazing R-Value. It is more flexible than concrete block and won’t crumble on impact which means it doesn’t need expansion joints. Nails can easily be driven into hempcrete brick with adhering sheathing or drywall. It is a perfect moisture regulator while absorbing CO2, retaining the carbon and releasing O2.

You can also use discarded and leftover hempcrete as a soil amendment.

Unfortunately, builders still need to import hemp hurd products from Canada and China.

TagsbuildingCO2HempHempcretehousingO2Organic
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HempTek.org was founded as an educational resource and informational site passionately dedicated to the future of industrial hemp in all it’s potential. Hemp is truly a miracle plant that possesses the distinct ability to heal, nourish, cloth and even shelter. There is no other substance that can encompass such a wide variety of areas as hemp. We fight daily for its legalization and ultimate assimilation back into the lives of humans where it belongs and has been absent for far too long. This is our mission and life work.

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