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Table 2 Main specifications of Portland cement.

From: Laboratory Investigation into the Flexural Behavior of Embedded Concrete Sleepers in Two-Stage Concrete with Preplaced Ballast Aggregate

  Main chemical components (%)
  C3S C2S C3A C4AF CaSO4 Al2O3 Fe2O3 MgO L.O.I I.R
  51 25 12.2 7.2 2.6 5.6 3.7 2.6 1.2 0.3
  Physical properties
Fineness (\(\mathrm{cm}^2/\mathrm{g}\)) Retained on sieve #70 (%) Autoclave expansion (%) Normal consistency (%) Setting time (min) Compressive strength (MPa)
Initial Total 3 days 7 days 28 days
  2528 10.95 0.56 25.1 175 245 15.6 23.6 43.1
References ASTM C204 (2016) ASTM C136/C136M (2014) ASTM C151/C151M (2016) ASTM C187 (2016) ASTM C191 ( 2013a) ASTM C109/C109M (2013)