Bricks

[overherebc]

Does anyone out there have any knowledge or experience of the water penetration, if any, through walls built with those 250mm x 100mm red bricks that lock together and need the grout poured into the holes to make it a fairly solid wall.

I'm sure they have a trade name but no one I know seems to know what it is

Thanks in advance.

[sezze]

I think you mean Blockprasan . If it is the name or not i do not know , but if you type in the name in google you will get those type of bricks. I did see them before but i never seen any building with it . They are interlocking and they are load bearing as far as i can understand .

[Kwasaki]

Have you seen those bricks here in Thailand. ?

What do you want to do. ?

What ever bricks blocks or different type of building system you use if theres any moisture penetration problems they can easily made made waterproof with many types of repellent sealants.

Edited February 27, 2012 by Kwasaki

[kwonitoy]

I used those type of bricks for the front part of the security wall for my place.

A little more decorative than plain bricks, with ironwork between pillars.

These type of bricks do need sealing, I put on two coats. The wall is six years old and shows no signs of wear.

I've never seen these bricks used for anything but building a fence/wall.

Not sure of the trade name for them

[Crossy]

http://www.blockprasan.com/startop/ leads to the equipment manufacturer, they are in Nakhon Pathom, could be worth a call to see if they sell the bricks too.

[T_Dog]

I used those type of bricks for the front part of the security wall for my place.

A little more decorative than plain bricks, with ironwork between pillars.

These type of bricks do need sealing, I put on two coats. The wall is six years old and shows no signs of wear.

I've never seen these bricks used for anything but building a fence/wall.

Not sure of the trade name for them

Nice looking wall! I did see a small house made with them up in Doi Saket. Apparently it is very difficult to make four true walls as no mortar is used on the joints to compensate for a poor footing. I am curious how did your wall get connected? Did they use mortar, and if so, what technique?

[kwonitoy]

The bricks stack and lock together and then cement was poured into the holes to strengthen it.

The pillars holding the ironwork had the concrete through the holes and there is a square void in the center that was also filled with concrete and heavy gauge wire (Thai rebar).

It's very solid

[bbradsby]

For water penetration resistance, you'll usually use a cement plaster/render finish with a good few coats of elastomeric paint or sealer... and yearly patching & reseal/repaint. The system can be made waterproof until the first cracks appear amid wall and at perimeters of brick wall infill panels - usually in about a year in Thailand. Then no sealer thats not elastomeric will continue to work. Just look around the moobahns, especially the inside, water-stained wall surfaces!

If you need to see brick facade, use thinner bricks in a double-wythe wall assembly with a dropped slab for the outer wythe to sit in, then flash the inner wythe & PERMANENTLY waterproof it's exterior [soon to be concealed] surface - this gives you a beautiful exposed brick rainscreen exterior wythe, and a waterproofed inner wythe, with some insulation built in via the air gap.

Back to the plaster/render finish:

There ARE ways to minimize cracking, such as microfibre, metal lathe, and proper mix/application/curing, and control joints... but the various fired clay products in LoS and their mortar setting bed seem to always shrink as they fully cure, thus the cracks. Better products are the concrete masonry units that are autoclaved... and a stiff mortar mix... via proper site supervision!

Lets be careful out there!

[overherebc]

Have you seen those bricks here in Thailand. ?

What do you want to do. ?

What ever bricks blocks or different type of building system you use if theres any moisture penetration problems they can easily made made waterproof with many types of repellent sealants.

Should have att' the photographs earlier. My thoughts are that although they make a strong wall there does not seem to a way that the grout will fill in between the vertical faces of the bricks and will not ensure a fill even between the horizontal faces, hence the worry about water if used for any kind of building. The bricks are easily obtainable almost everywhere , 9 or 10 baht each which means you can build a square metre of wall for around 500 baht.

Photographs are top and bottom of the brick.

[klikster]

I used those type of bricks for the front part of the security wall for my place.

A little more decorative than plain bricks, with ironwork between pillars.

These type of bricks do need sealing, I put on two coats. The wall is six years old and shows no signs of wear.

I've never seen these bricks used for anything but building a fence/wall.

Not sure of the trade name for them

Nice looking fence. What type of sealer did you use?

[klikster]

One guy op in Bandu (Chiang Rai) built a house with these blocks. He hadn't rendered it and was hoping that wasn't needed. He did have some leaking problems in one area of the house.

[transam]

I know a guy that built a large bungalow with these bricks. First he formed a concrete base in the ground, then layer of sand that was compressed on top then another concrete base on top of that. Then just built a twin wall with the bricks. The bricks are not totally uniform and steel straps were used to straighten things up on laying. Cement slurry was then poured in the holes to stiffen the structure. Tile grout was used on all the joints the same colour as the bricks. Looks really good.

[Kwasaki]

Have you seen those bricks here in Thailand. ?

What do you want to do. ?

What ever bricks blocks or different type of building system you use if theres any moisture penetration problems they can easily made made waterproof with many types of repellent sealants.

Should have att' the photographs earlier. My thoughts are that although they make a strong wall there does not seem to a way that the grout will fill in between the vertical faces of the bricks and will not ensure a fill even between the horizontal faces, hence the worry about water if used for any kind of building. The bricks are easily obtainable almost everywhere , 9 or 10 baht each which means you can build a square metre of wall for around 500 baht.

Photographs are top and bottom of the brick.

I would say you will not have a problem using them, if you like em go for it.

Using cement infill & re-bar, maybe you could use this glue mortar as well, don't see why not.

http://www.superbloc...duct_menu3.html

Edited February 28, 2012 by Kwasaki

[kwonitoy]

I used those type of bricks for the front part of the security wall for my place.

A little more decorative than plain bricks, with ironwork between pillars.

These type of bricks do need sealing, I put on two coats. The wall is six years old and shows no signs of wear.

I've never seen these bricks used for anything but building a fence/wall.

Not sure of the trade name for them

Nice looking fence. What type of sealer did you use?

I don't know what type of sealer they used, It was 6 years ago and at that time I was working 1 month on 1 month off.

The fence was built during one of my months at work, looked like it does in the picture when I came home. The wife updated me as to what was done and I was happy with the results.

[overherebc]

Att is a photograph of a house and outer wall built with the bricks. The house has been painted and looks good.

If I go ahead with the build I'll post as things go on.