1. Chapter 4 Ordinary Concrete

2. §4.2 Ingredient of Ordinary Concrete 4.2.1 Cement4.2.1 Cement 4.2.2 Aggregate 4.2.3 Water 4.2.4 Concrete Admixture

3. Sketch Map of Concrete  Concrete is made up of  Paste  Cement  Water  Aggregate  Sand  Gravel  Admixture Ingredients of Ordinary Concrete

4.  Select cement types according to the different environment  Six general cements are commonly used. Types of Cement Selection of Types 4.2.1 Cement

5. Selection of Grade Grade Grade must be selected according to the different design strength grades. For ordinary concrete, it is 1.5-2 times stronger than that of the concrete. For high strength concrete, it is 0.9-1.5 times stronger than that of the concrete. Cement- Grade