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grinders are the perfect tool for removing an old surface covering in anticipation of a new covering or treatment. Their high RPMs remove tough coverings, such as glue, paint, older concrete ...

which to this day forms the largest unreinforced concrete dome in existence at 43.3 meters diameter, and is in excellent condition despite being being nearly 1,900 years old. Even as the Roman ...

Students may have found a solution, with the invention of a new type of concrete. This new concrete is not only self-heating, it's self-healing, which could solve a multitude of problems we see ...