Technology for creating prefabricated buildings of hempcrete
The story will focus on a few key points to consider when drawing up the classic business plans - the cost of English primary processing of hemp plant, as well as the market for the final product (the creation of pre-fabricated buildings hempcrete).
In the collection of the British Museum of Science more than 220 thousand exhibits. More than 90% is stored in the store. Many of them are in the giant hangars from World War II. But these raw space can quickly turn the treasure in the trash. The solution - to build a building within a building to prevent rotting. And surprisingly, it is built from hemp. How is it done?
From classics airplanes and cars, to the old bike. In buildings storerooms stores more than 16 thousand of amazing items. But an employee of the museum Meta Moore's problem.
Met Moore - Inside these hangars quite cold and can be wet. And it's bad for some particularly sensitive items, such as coaches.
They need a perfect control of humidity and many scientists will tell you that nature usually have a solution.
In this field, full of industrial hemp, belonging to the cannabis family. However, this species is almost no drug. It is grown as a building material. most of the new museum building will be built from this abundance of grass. Every year in Europe grow more than 20 thousand hectares of cannabis. From one hectare receive up to 12 tons of the crop. The compressed and dried hemp straw comes here, a modern factory for processing hemp in the east of England. If you want to know, they hemp experts.
Straw consists of two main parts. Fiber and woody core, called shiv (used in construction). According to the manager Steve Holton, to remove the kostra, it is necessary to thresh straw.
The factory separate the two main components of hemp - fiber and woody portion in the core.
This car is worth 5 million pounds in shares hemp into its component parts. First, the straw passes through the pipeline, where it is cut into a giant guillotine. Then hemp enters the crusher where it is crushed to pieces.
This crusher - the heart of the process. The rotor is 3.5 tons and three hundred and fifty hammers inside. They crushed the straw on the fiber and woody core.
The crusher can be divided up to 100 tons per day. Through a sieve finer kostra falls down, and the fibers are sucked giant pipe. Kostra are pressed and sorted by types, which are then automatically packed and sealed, there is no waste. Because cannabis can receive up to 25 thousand kinds of products. Dust pressed into briquettes, the fibers used for textiles and paper. Packed and sealed kostra avtoshtabelerovschikom stored. This robot is worth 250 thousand pounds. It can store up to 250 packages per hour. Now forklift trucks to deliver stacks.
Next stop - lime processing plant near Didcot, southern England. Here the kostra is converted to hempcrete panels needed for the construction. First, 420 kg kostra poured into truck that delivers it into a giant blender. By itself, dry hemp will not hold the shape, so it strengthens, using 825 kg of material, which was used to build the ancient Romans - lime. An additional advantage of lime - it makes the panel resistant to mildew. The last ingredient, good old-fashioned water in large quantities - 800 liters. Mixer with an engine of 140 horsepower mixes kostra, lime and water, creating a viscous mulch, called hempcrete, which hardens forming a solid wall. The mixture is poured into wooden molds, then tamped workers and smooth it.
Pierce Ashley Carter
Insulation - is the air retention. But we do not need large voids. I think it's like baking cakes.
But the cake is too moist. So that they harden, they need to be dried. As explained Pearce Ashley Carter.
Pierce Ashley Carter
Behind me, a big industrial fan that drives the air temperature required for this network of pipes. This pulls air and moisture through the panel 18 hours completely dry, is less than 10% moisture.
After drying, the panel is closed with a protective film. It allows moisture, maintaining a constant level of humidity inside the finished building. The panels were then loaded on a car and taken to the museum construction site. Each panel weighs up to 400 kg, so the workers use their truck for accurate placement. Panels precisely adjusted to each other. When the loader puts them into place using the laser vymeryat location accuracy. They sew straps before mounted on a metal frame of the building. Hemp will act as a natural air conditioner, keeping cool indoors. And this can not be smoking cannabis, hempcrete refractories.
After 16 weeks of a new store Science Museum 150 hemp panels ready. The shelves will soon be filled with the most important scientific relics of our time, including fragile notebooks of Albert Einstein. At the end of the pipe sucked the cool night air to maintain a constant temperature. Matt Moore pleased with the result.
The results of all the tests are positive. They show that the temperature has stabilized to a level allowing contain collection.
Comment of the Association "Ukrainian industrial hemp"
Considering the area of technical industrial hemp crop, in the nearest time in our country will be extremely acute problem of processing the trusts, grown in the territory of Western Ukraine. Most likely for several years in the Western and Central region of the country will be run power for the primary processing of hemp for them onovnom raw materials - hemp fiber and kostra. Those who are actively interested in the possibility of transformation into a commodity trusts, as well as investors who are considering entering the hemp business "without reference" to the very process of growing, this story will be much interesting. It also focused on a few key points to consider when drawing up the classic business plans - the cost of English primary processing of hemp plant, as well as the market for the final product (the creation of pre-fabricated buildings hempcrete).