Vacys Motuzas prieš 0 sekundžių Thanks so much for this ...

DrewishAF prieš 2 dienas If you look at the composition of them and the finish, you can tell (aside from being a bit larger) that the older bricks were mixed better and fired slower. The first red flag about the new production brick is the air pockets inside. The other interesting part of this is the way they were tested. This press is used with an arrangement that bricks aren't really made to withstand. It's more an interesting comparison than it is useful information so don't think that this test proves your brick home will crumble apart 3 times faster than old bricks. My wife and my house is 146 years old. We have lots of original bricks lying around as well as some bricks from the 1950s-1970s. There is a HUGE variance in the consistency just between those made in around the same time. But it's still not all that important because, again, bricks used in construction are not at all under this direction or magnitude of compression.

W L prieš 5 dienas (redaguota) I’m a builder and have overseen and QC’d tens of thousands of bricks installed. Modern bricks, full of air bubbles and cavities for better insulation value and freeze tolerance, are used for facades with the actual structure being concealed behind them with an air gap and usually some type of water proof insulation like mineralwool. Bricks actually are a very brittle building material and are rarely used for any type of load bearing anymore. There are much better modern techniques that are hidden behind the brick wall you see that won’t collapse should a wall get hit, as would happen with a traditional brick wall.

spamuel98 prieš 3 dienas With the modern concrete, you can tell the force was coming in at an angle, as one corner was higher up, skewing the results. Putting all the force on one point creates more shear force than when the weight is distributed across the entire area, so the actual load bearing capacity of all those materials is a lot higher than what's shown here, but the relative strength of the materials is compared pretty effectively for the bricks, since they were subjected to the same process every time.

Marius Fiebig prieš 3 dienas The old bricks were fired at a higher temperature. As a result, they have increased compressive strength because there is less air in the stone and the pores have closed. In modern stones there is more air to achieve better thermal insulation and therefore the stone breaks earlier. You can buy the same brick from 1890 today. These are then water-resistant clinker bricks, which can withstand direct moisture, which the above-mentioned stone cannot. In addition, such a stone can better protect against noise, but not against heat like the "new" brick. Greetings from Germany