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  1. #1
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    Builiding a 2 sty house out of AAC; possible?

    I plan to build a 2 sty house fully out of AAC blocks (maybe except for the foundation). Plans for the house is 14m X 12.5m. Any of the more experinced builders could inform if this is possible/ feasible? Thanks.

  2. #2
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    It's irrelevant whether it is feasible, what is relevant is on who signs off on your planning permission.

  3. #3
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    Quote Originally Posted by dirtydog View Post
    It's irrelevant whether it is feasible, what is relevant is on who signs off on your planning permission.
    Sorry dd, you mean a house built on AAC would most probably not be approved?

  4. #4
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    I had to google to find out what AAC is. This is something new to me. Does Thailand even sell this stuff?

    AAC was invented in Sweden in the 1920s by architect, Johan Axel Ericksson, who was looking for an alternative to wood products, which were scarce after World War I. AAC is manufactured by placing silica in a ball mill and reducing it to a fine powder. The ground silica is mixed with water to form a slurry.

    Then limestone powder, portland cement, and a small amount of aluminum powder are added, and the mix is quickly cast into a mold. Within seconds the aluminum reacts with the lime and cement, initiating a chemical reaction that releases hydrogen gas. The gas forms bubbles up to 1/32 inch in diameter, causing the mixture to rise like a loaf of bread. The result is a material that is about 80% voids by volume.


    Blocks for constructing walls are solid except for holes to place vertical reinforcement. They are filled with high-strength grout afterwards. Workers place thinset mortar with a notched trowel to join blocks together.

    After the mixture partially sets, it is still soft enough to be wire-cut into its final shapes as blocks or panels. The pieces are then placed in a 400 F steam-heated autoclave oven, pressurized at 13 atmospheres. Autoclaving converts the material to Tobermorite, a naturally occurring mineral found in limestone deposits whose crystal structure has some properties similar to those found in glass. When the product emerges, 8 to 12 hours later, it has all of its finished properties. AAC can bear loads up to 1100 pounds per square inch, yet its weight is 1/5 that of concrete.

    THE BENEFITS OF BUILDING WITH AAC
    Unlike concrete masonry units, AAC blocks are solid, with no molded core holes. Standard blocks are 8 inches high, 24 inches long, and 4 to 12 inches thick. An 8x8x24-inch block weighs only 35 pounds, so it's easier to handle than a conventional concrete block. AAC can easily be tooled also, and even cut, drilled, and shaped with woodworking tools. Napier says that there is no other material commercially available that can match AAC for fire resistance. Four inches of AAC has a 4-hour fire rating, making it ideal in commercial buildings for encasing steel columns, surrounding elevator shafts, and for other fire-stopping requirements.

    Building with AAC

  5. #5
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    Bet that shit ain't never gonna be here. sounds to damn good to be used in Thailand, just like Prep H or Neosporin, aint here but used to be, but has been replaced by corticosteroids Thai seem queer for steroids and anti biotics. and any building materials that are good they just won't use,,try for a 4'X8'x2" sheet of rigid insulation, good luck

  6. #6
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    The blocks are available here and we have been using them for more than 5 years here in Thailand, but you aint gonna get no Thai believing that any bricks or blocks have load bearing properties.

  7. #7
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    My mate is the senior architect on that big hotel thingy in Pattaya. He's been trying to get the construction company to improve their building practices and techniques, but he says it's like banging his head against the floor. It'll happen, but veeeery sloooowly.

  8. #8
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    Actually, I was considering if this is possible. The Superblock website states this is can be used in load bearing structures. i would be building a single story dwelling with a steel framed roof supported by the superblock structure.

  9. #9
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    I know these as Durox blocks, never seen them used for anything other than interior walls, that is in the UK though. I think theres different types of them, some for walls and some for loadbearing.

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    Quote Originally Posted by Spin
    Actually, I was considering if this is possible. The Superblock website states this is can be used in load bearing structures. i would be building a single story dwelling with a steel framed roof supported by the superblock structure.
    Yes it is possible, but you wont get your plans approved.

  11. #11
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    Quote Originally Posted by dirtydog
    but you wont get your plans approved.
    So no approved plans = no building permit. Ok thats fair enough, no point arguing with them.

    So the structure has to incorporate the traditional concrete post uprights and roof beams. That adds a lot of time to the build which was the reason for me wanting to build 100% superblock
    Originally Posted by Smeg
    ... I like to fantasise sometimes, and I lie very occasionally... my superior home, job, wealth, freedom, car, girl, retirement age, appearance, satisfaction with birth country etc etc... Over the past few years I have put together over 100 pages on notes on thaiophilia...

  12. #12
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    It is possible to make load bearing walls with "superblock" or etc but then have to use king size block ! I suppose that 200 millimeter wide block would be enought. In Finland we use more bigger blocks so big as 375 millimeter wide. Mainly reason is cold wintertime which demand better insulation capacity from blocks !

    If I would do load bearing wall with 200 millimeter superblocks then I would put horizontal and also vertical reinforcement. It need only angle grinder to make horizontal grooves for block rows and put 6 millimeter rebar in the groove and cover with cement. Vertical reinforcement could do with about 30 millimeter drill and 12 millimeter rebar. Superblock is easy to drill with old style wood drill. After when hole is drilled could drop cement in the hole and then put the rebar inside. Horizontal reinforcement should be continuous but vertical reinforcement could make also short rebar. Idea is to tie at least 2 last block row together with vertical reinforcement.

    It is also important what kind of roof trusses have to design. Roof trussess should be such kind of type that roof weight comes straight down with wallls. Roof trussess shouldnt push walls outside or inside.

    Have to notice that every rebar have to cover with cement very well ! Suberblock material is such that it causes corrosion for rebars.

    I think if you would do that way you would got very strong construction.

  13. #13
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    Quote Originally Posted by blackgang View Post
    Bet that shit ain't never gonna be here. sounds to damn good to be used in Thailand, just like Prep H or Neosporin, aint here but used to be, but has been replaced by corticosteroids Thai seem queer for steroids and anti biotics. and any building materials that are good they just won't use,,try for a 4'X8'x2" sheet of rigid insulation, good luck
    Icant post links yet .
    DO a google search for

    Q-Con Blocks
    Superblock Blocks

    I can buy these in remote Roi-Et

  14. #14
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    Quote Originally Posted by Powerhammer
    Icant post links yet . DO a google search for Q-Con Blocks Superblock Blocks I can buy these in remote Roi-Et
    I know what Q-con is and I would have built my house with it had it been available when I built, but was not here then and it came about a year or so after we built,
    And I have a couple of friends that have built with it since and it is very good.

  15. #15
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    Quote Originally Posted by Spin View Post
    Quote Originally Posted by dirtydog
    but you wont get your plans approved.
    So no approved plans = no building permit. Ok thats fair enough, no point arguing with them.

    So the structure has to incorporate the traditional concrete post uprights and roof beams. That adds a lot of time to the build which was the reason for me wanting to build 100% superblock

    you may find that building solely with blocks and no cement holding strucutre may not work very well in an earthquake

    that is the reason, I believe

    and BG
    Bet that shit ain't never gonna be here. sounds to damn good to be used in Thailand, just like Prep H or Neosporin, aint here but used to be, but has been replaced by corticosteroids Thai seem queer for steroids and anti biotics. and any building materials that are good they just won't use,,try for a 4'X8'x2" sheet of rigid insulation, good luck
    all wrong, as DD pointed out. I don't think that even he uses steroids and antibiotics for building
    I have reported your post

  16. #16
    Days Work Done! Norton's Avatar
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    Quote Originally Posted by Spin
    So no approved plans = no building permit. Ok thats fair enough, no point arguing with them.
    Not necessarily true. Depending on where you plan to build in Roiet. If in a village no one will be assed to bother you for plans much less approval.

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