Page 37 - CONCRETE MATERIALS AND MIXTURE
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1.3 Fundamental of concrete mixture





          • The usefulness of concrete for various



               concrete grade/ nominal strength :





                   Concrete                 Nominal  Use


                Grade                       strength


                7                           7                          Non reinforced concrete
                10                          10


                15                          15                         Reinforced concrete with lightweight

                                                                       aggregates

                20                          20                         Reinforced concrete with normal weight

                25                          25                         aggregates



                30                          30                         Pre-tensioning concrete




                40                          40                         Post-tensioning concrete

                50                          50
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