how does concrete work chemical reaction

Best answer


Both the cement powder and grit in their pure forms are anhydrous (devoid of water). When they come into contact with water a chemical reaction is set off. This chemical reaction firstdissolves the most susceptible elements of the cement powder 鈥?sulphate and gypsum 鈥?which turn the water into an alkaline, sulfate-rich solution.

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  • What is the chemical reaction in concrete?

  • The paste, composed of portland cement and water, coats the surface of the fine (small) and coarse (larger) aggregates. Through a chemical reaction called hydration, the paste hardens and gains strength to form the rock-like mass known as concrete.

  • What happens when cement react with water?

  • When they come into contact with water a chemical reaction is set off. This chemical reaction first dissolves the most susceptible elements of the cement powder 鈥?sulphate and gypsum 鈥?which turn the water into an alkaline, sulfate-rich solution. The next part of the cement powder to react to the water is aluminate (C3A), which turns into a gel.

  • How is concrete made?

  • How Concrete is Made. In its simplest form, concrete is a mixture of paste and aggregates, or rocks. The paste, composed of portland cement and water, coats the surface of the fine (small) and coarse (larger) aggregates. Through a chemical reaction called hydration, the paste hardens and gains strength to form the rock-like mass known as concrete.

  • What makes concrete so strong?

  • Well, the secret to its incredible strength can be found in the chemical reaction that causes it to turn from liquid to solid. At its most basic, concrete is made up of three simple ingredients 鈥?cement, grit (usually in the form of sand or gravel), and water. Both the cement powder and grit in their pure forms are anhydrous (devoid of water).

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