Are you curious about the material that holds our cities together, the substance that is more widely used than any other, apart from water? That's right, we're diving deep into the world of concrete. But before we get into the nitty-gritty, let's address a common misconception. Is cement the same as concrete? Not quite. Cement is the glue, the matrix, while concrete is the end product, a mix of cement, gravel, and sand. Now, ready to have your mind concrete-ly blown? Let's pour some knowledge.