infinity11 Posted December 28, 2013 Share Posted December 28, 2013 they must be for ventialtion or condensation but not sure some thai concrete wall have air slitsone looks like 2 rows of 4 brickseach brick has 4 slits or slots looks like some critters can find their way inmaybe mosqyitos, and spiders for surethese bricks have no screen(s) what exactly is the point or purpose if the building has windows? Link to comment Share on other sites More sharing options...
infinity11 Posted December 28, 2013 Author Share Posted December 28, 2013 Hot air interior pressure release valve for enlosed space? Link to comment Share on other sites More sharing options...
krisb Posted December 28, 2013 Share Posted December 28, 2013 Something like this... Ventilation. Link to comment Share on other sites More sharing options...
wayned Posted December 28, 2013 Share Posted December 28, 2013 Ventilation, usually in bathroom and kitchen areas. Everybody doesn't have air conditioning and exhaust fans! Link to comment Share on other sites More sharing options...
krisb Posted December 29, 2013 Share Posted December 29, 2013 Have seen it used in restraurant kitchen windows before. Bit hard to stomach that was. Link to comment Share on other sites More sharing options...
infinity11 Posted December 29, 2013 Author Share Posted December 29, 2013 Something like this... Ventilation. NO much smaller Link to comment Share on other sites More sharing options...
wayned Posted December 29, 2013 Share Posted December 29, 2013 If they are the horizontal slots , either 2 or 4 per bock, cut/made at a 45 degree angle to keep blowing rain out, they are used for ventilation in non air conditioned kitchens and bathrooms. Link to comment Share on other sites More sharing options...
somchaismith Posted December 29, 2013 Share Posted December 29, 2013 When they make those concrete homes, I know that they are made of house bricks with a layer of concrete over their outsides . I've always wondered when they lay the concrete what holds the concrete in place while it's drying? Link to comment Share on other sites More sharing options...
fasteddie Posted December 29, 2013 Share Posted December 29, 2013 Let the farts out? Link to comment Share on other sites More sharing options...
johnnyk Posted December 30, 2013 Share Posted December 30, 2013 (edited) When they make those concrete homes, I know that they are made of house bricks with a layer of concrete over their outsides . I've always wondered when they lay the concrete what holds the concrete in place while it's dryinhg?Cement and concrete are not the same.Cement is an ingredient of concrete which is basically cement + aggregate (sand and/or stones). Cement isn't very strong on its own so is not suitable for load- bearing. Concrete is used for structural strength as in foundations, bridge supports etc. The pillars holding up the BTS guideway are concrete, as an example. To coat/render exteriors lime is often added to cement because it breathes allowing moisture to escape. Cement bonds naturally to stone or brick unless it is mixed too loose/wet then it can't hold. Cement and concrete will not bond to wood which is why wood forms are used when pouring. Edited December 30, 2013 by johnnyk 2 Link to comment Share on other sites More sharing options...
marko kok prong Posted December 31, 2013 Share Posted December 31, 2013 When they make those concrete homes, I know that they are made of house bricks with a layer of concrete over their outsides . I've always wondered when they lay the concrete what holds the concrete in place while it's drying? not sure if they use it here but when rendering in Australia,a bonding agent is added bondcrete was one i used to use,this gives the render a nice creamy constituency,and really helps it adhere to verticle surfaces,but it is fairly expensive,can't say as i have seen it used here. 1 Link to comment Share on other sites More sharing options...
trogers Posted December 31, 2013 Share Posted December 31, 2013 They are called "Ventilation Blocks". They provide natural ventilation while serving as a secure wall and privacy. Commonly used in Thai outhouses and stores. Link to comment Share on other sites More sharing options...
Guitar God Posted January 7, 2014 Share Posted January 7, 2014 These things? I think they're there to let the lizards in and out. 1 Link to comment Share on other sites More sharing options...
donx Posted January 9, 2014 Share Posted January 9, 2014 My in-law's house has them in all of the rooms. Funny thing was when my brother-in-law added an addition for his family, the slits were installed the wrong way such that the upper opening of the 45 degree angle pointed outside which meant that rain came into his part of house easily. They ended up just filling in all of those slits with mortar or something similar. Link to comment Share on other sites More sharing options...
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