From the course: Practical Engineering
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Concrete 101
- Concrete is as much part of the urban landscape as trees are to a forest. It's so ubiquitous that we rarely give it any regard at all. But underneath that drab, gray exterior, is a hidden world of complexity. Hey, I'm Grady and this is Practical Engineering. On today's episode, it's concrete 101. (upbeat music) Concrete is one of the most versatile and widely-used construction materials on earth. It's strong, durable, low-maintenance, fire-resistant, simple to use, and can be made to fit any size or shape. From the unfathomably massive to the humble stepping stone. However, none of those advantages would matter without this, it's cheap. Compared to other materials, concrete is a bargain. And it's easy to see why, if we look at what it's made of. Concrete has four primary ingredients: water, sand, also called fine aggregate, gravel, aka course aggregate, and cement. A recipe that is not quite a paragon of sophistication. One ingredient falls from the sky and the rest come…
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