How to Make Adobe Bricks

| 2/12/2020 11:01:00 AM

 Adobe brick production

Recently, we built our bathroom addition using adobe bricks.The mixture you use is similar to that which you would use to make cob walls. Unlike cob walls, however — which are constructed using a wet material — adobe bricks are molded wet, then sun-dried to use when they are hardened. For this reason, adobe bricks are much more commonplace in areas which experience hot and dry periods during the year,

Mediterranean regions are one example of where adobe can work well as well as parts of Central America. With bricks, you can build as high as you want in one day, whereas with wet cob, you are limited by how quickly the wall starts to slump under its own wet weight. For this reason, I believe the hot, dry countries take advantage of the drying effect of the sun, and I encourage those living and building in these climates to consider using dry adobe bricks to build structures.

Make Your Own Adobe Bricks for DIY Construction Projects

Build a wooden mold. First, you will need to make a mold using any material available to you, or that you know how to work with. We make ours using wooden boards, but if you worked with metal or plastic, they would work just as well, and possibly be more durable too.You can make a mold to produce one, two, or even more bricks at a time. The limiting factor really is how many you can pick up at any one time in order to drop the bricks out of the bottom of the mold.

So first up, cut your wood to size. When fixing the wood together, you must make sure that each box is as close to square as possible. If they are off even a small amount, this will make it difficult for the bricks to slide out of the bottom of the mold when they are ready. Add a couple of handles on the ends to make it easy to lift when full of clay.

Mix earth material. Next up, collect your earth: A mix of 75% sand and 25% clay works well for us. Some people filter their materials first, but I have found that as long as there are no aggregates larger than a centimeter or so, then its never too much of an issue. You can add straw too, which will help reduce cracking and create a tensile strength within your bricks.

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