Yes, concrete is made by cement. Cement is a mixture of limestone, clay, and other materials that are ground into a powder and then heated. The heat causes the ingredients to react and form clumps. These clumps are then crushed and added to water, which forms the concrete.
Concrete is not made by cement. Cement is used to make concrete. Concrete is made by mixing water, aggregate (a mixture of gravel and sand), and Portland cement. Portland cement is the key ingredient in concrete. It is a type of hydraulic cement that hardens when it comes into contact with water. Aggregate is used to give concrete its bulk and strength, and water is used to activate the Portland cement.
