Research Article
Testing of Action of Direct Flame on Concrete
Table 2
Concrete mixtures of tested specimens and their properties in fresh state.
| | Component kg/m3/mixture | CEM I - GR-PF | CEM III/B - B | CEM III/B - B-PF | CEM III/B - B-SF | CEM I - GR-SCC |
| | CEM I 42.5 R | 350 | — | — | — | 360 | | CEM III/B 32.5 N | — | 350 | 350 | 350 | — | | Mined aggregate 0/4 mm (spar gravelous sand) | 894 | — | — | — | 930 | | Mined aggregate 4/8 mm (spar gravelous sand) | — | — | — | — | 200 | | Coarse aggregate 8/16 mm (granodiorite) | 928 | — | — | — | 510 | | Coarse aggregate 0/4 mm (basalt) | — | 1 070 | 1 070 | 1 070 | — | | Coarse aggregate 4/8 mm (basalt) | — | 1 070 | 1 070 | 1 070 | — | | Water | 194 | 175 | 175 | 175 | 174 | | Plasticizer ChrysoFluid Optima 206 | 2.3 | — | — | — | 5.5 | | Superplasticizer Mapefluid N200 | — | 3.5 | 3.5 | 3.5 | — | | Fly ash | — | — | — | — | 90 | | Polypropylene fibers Fibrin 615 | 2.0 | — | — | — | — | | Polypropylene fibers Fibrin 3/15 | — | — | 1 | — | — | | Steel fibers CAR25CDM | — | — | — | 50 | — | | Consistency (slump test) mm | 150 | 130 | 30 | 80 | — | | Consistency (slump-flow test) mm | — | — | — | — | 670 | | Time slump-flow test) s | — | — | — | — | 5.0 | | Time (L-box test) s | — | — | — | — | 6.5 | | / (L-box test) | — | — | — | — | 0.97 | | Air content in fresh concrete % | 6.4 | 2.2 | 3.4 | 2.5 | 1.8 | | Density of hardened concrete kg/m3 | 2 180 | 2 560 | 2 550 | 2 610 | 2 360 |
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