Price price price... One bag of 25kg plaster around RM9 to RM11. There fine one costs more and rougher type costs less. For plastering mud go for cheap rough one, you are not going to see the player surface after it has been concreted, right?
Continue from part one...
Ok, ok, there is no part one or part 2, just to make thing easy to understand.
The burger thing. Now you can choose to have the brick to be a part of the wall or you can tear it down as concrete cured.
Having it be part of the concrete wall making the wall very thick but that does not make the wall any stronger and/or durable than the reinforced concrete. Thicker wall means losing space too. (Note: reinforced concrete means concrete with rebars/bone inside, stronger and harder to break.)
Like wooden formwork, you can choose to tear down the brick after the concrete is set. (Of course the used bricks will have no use or commercial value as it is stuck with cement/concrete. The purpose is not to save money for reuse but for nicer looking and space).
You have to decide before you build the brick formwork. because you have to add a layer of thin plywood behind the brick formwork so that concrte will not stick on to the bricks. Without a layer preventing concrete from joining the brick formwork you can never remove the brick without breaking the concrete. It stuck together like one whole piece.
Price, price, price, money money money.... thin ply wood is cheap, it does not cost you a bomb compared to the thicker plywood.
Do not use newspaper or cardboard or plastic sheet instead of the thin plywood. Paper will "dissolve" as you pour concrete. Plastic sheet will drop off or out of place if you are not careful and it will be hell to dig out the wet concrete and re-position the plastic sheet.
I do not know about oiling it. It is the practice to use oil for steel mould. But for bricks??? The bricks will suck up the oil and still the concrete gets stuck to the brick??? I am not sure, you may want to experiment is first before your actual work. It will be a better and cheaper solution than ply wood if this works. Anyone try that before?
Home Landscaping, Share & Show Garden Landscaping
Aug 27 2013, 05:10 PM
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