Table 2

1 January 2000


Concrete composition and concrete properties at 28 days - Characteristic data of the concrete test fields in the Runcahez diversion tunnel in Switzerlandc kg/m3 Cement content; w/c water/cement ratio; fc N/mm2 compressive strength*; E kN/mm2 modulus of eleasticity*; Fct N/mm2 flexural strength*; J J/m2 fracture energy*; MC Microsilica concrete; RCC Roller compacted concrete; HPC High performance concrete; SFC Steel fibre concrete; PC Polymer concrete; * determined after 90 days
Field C w/c fc E fct J
1. MC 450 0.32 109 57 12 210
2. RCC 400 0.32 94 56 10 209
3. HPC 500 0.30 114 57 12 1019
4. SFC 480 0.31 68 51 9 143
5. PC 687 13 14 867



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