Table 313 Compressive strength classes for dense and lightweight concrete

Compressive strength classes for dense concrete

C8/10 C12/15 C16/20 C20/25 C25/30 C30/37 C35/45 C40/50

C45/55 C50/60 C55/67 C60/75 C70/85 C80/95 C90/105 C100/115

Compressive strength classes for lightweight concrete

LC8/9 LC12/13 LC16/18 LC20/22 LC25/28 LC30/33 LC35/38 LC40/44 LC45/50

LC50/55 LC55/60 LC60/66 LC70/77 LC80/88

Within each compressive strength class the numbers indicate the 28 day crushing strength in MPa as determined by the 150 mm diameter by 300 mm cylinder and 150 mm cube test, respectively.

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