Building with concrete in very hot places, such as the Middle East, poses specific challenges. At high temperatures, the water in the concrete mix evaporates quickly, and this can affect the workability and strength once it sets. A second risk in high temperatures concerns the chemical reaction that takes place once cement is mixed with sand, gravel, and water to form concrete. This chemical reaction produces heat, and if the temperature of the mix rises above 70ºC and/or if the temperature difference between the concrete structure core and the surface goes above 20ºC, cracks could arise as the concrete sets, which weakens the resulting structure. As a result, the temperature of the concrete
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