Lightweight concrete blocks to build your house step by step part 1
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- Опубліковано 12 сер 2020
- Non autoclaved lightweight aerated concrete recipe you can find here www.pioner-group.com/concrete/
Autoclaved aerated concrete (AAC) is a type of precast concrete composed of natural raw materials. It was first developed in Sweden in the 1920s, when an architect first combined the conventional concrete mixture of cement, lime, water, and sand with a small amount of aluminum powder. The aluminum powder serves as an expansion agent that causes the concrete to rise, somewhat like bread dough. The result is a concrete that consists of almost 80 percent air. AAC concrete typically is made into blocks or slabs and is used to build mortared walls in a manner similar to that used for standard concrete block construction.
Autoclaved aerated concrete begins with the same process used to mix all concrete: Portland cement, aggregate, and water are mixed together to form a slurry. Upon the introduction of aluminum as en expansion agent, air bubbles are introduced throughout the material, generating a low-density lightweight material. The wet concrete is molded into shapes using forms, then cut into slabs and blocks once partially dried. The units are then moved to an autoclave for full curing under heat and pressure, which takes only 8 to 12 hours.
AAC concrete units are highly workable and can be cut and drilled with conventional woodworking tools, such as band saws and ordinary power drills. Because it is lightweight and relatively low-density, the concrete must be tested for compressive strengths, moisture content, bulk density, and shrinkage.
AAC concrete can be used on walls, floor, roof panels, blocks, and lintels.
• Panels are available in thicknesses of between 8 inches to 12 inches and 24 inches in width, and lengths up to 20 feet.
• Blocks come in lengths of 24, 32, and 48 inches, and thicknesses of 4 to 16 inches; height is 8 inches.
Cured blocks or panels of autoclaved aerated concrete are joined with thin bed mortar, using techniques identical to those used with standard concrete blocks. For additional strength, walls may be reinforced with steel or other structural members run vertically through spaces in the blocks.
AAC concrete can be used for walls, floors, and roofs, and its light weight makes it more versatile than standard concrete. The material offers excellent sound and thermal insulation, and is strong and fire resistant. However, in order to be durable, AAC must be covered with an applied finish, such as polymer-modified stucco, natural or engineered stone, or siding. If used for basements, the outer face of AAC walls must be coated with a thick layer of waterproof material or membrane. AAC surfaces exposed to weather or soil moisture will break down.
Interior surfaces can be finished with drywall, plaster, tile, or paint, or can be left exposed.
AAC blocks are easier and faster to implement, but when it comes to plastering and putty they can be tricky as in significant cases they lead to cracking.
This type of block is widely used in Europe , it has many eco properties , structural strength, high insulation values , fast construction and most importantly Im3 of mix material will make upto 5M3 of building material .
Laid properly with the correct thin joint mortar and bed joint reinforcement all cracking issues will not happen, they are plastered easily with priority one coat plasters .
The secret is having the knowledge how to use the material correctly which unfortunately is lacking in the UK construction workforce .
here where I live 25kg of cement costs 6 bucks, 40kg of sand costs 2 bucks, that's 9 cement blocks from YTONG (65kg/7.3kg = 8.9blocks). You can build as many as cement blocks as you wish, of any shape, the limit is only your imagination. With 2 hours of time intra-week + full hollidays and you have got your house in a year. The only reason people doesn't have house is because they don't want it.
is it cheaper compared to the conventional brick laying technology..
is it cement blocks or other materiel ?
Silica is not completely harmless to your health. When cutting or scoring these blocks us a respirator. Silicosis of the lungs is terrible, and irreversible. So do yourself a favor and wear more than just protective clothing.
Good Day, are these blocks available in Botswana - Southern Africa?
I need to learn this mix, can anyone help me?.
here is the basic recipe for non autoclaved lightweight aerated concrete www.pioner-group.com/concrete
So where is part 2 ????
ua-cam.com/video/96lrXFNf_k0/v-deo.html
en tout cas apparemment ce n'est pas salissant 🇨🇵🖐️
Looks like Styrofoam.
Autoclaved aerated concrete (AAC) is a lightweight cellular concrete that has been used for more than 80 years. Currently, however, no good recycling options for AAC from construction and demolition waste exist. for more details
I imagine that recycling has been attempted without consulting the plants - most recycle both the green and cured blocks into their production process.
always the negative, our waste disposal area in our town recycles bricks, concrete and other products, they get all ground up and used in road base.
Good grief. Just grind it up and you're left with sand. Or will that cause the entire world ecosystem to collapse?
If you're peddling products/information, you're not a comedian. You wasted money, your time, MY time, my patience etc.