Table 1 Properties of OPC (42.5R).

From: Comparative study on the properties of basalt and steel fiber reinforcement waste rock concrete

Fineness (%)

Condensation time (min)

Density (kg/m3)

Flexural strength (MPa)

UCS (MPa)

Unit price (RMB/t)

Initial setting of cement

The final setting of cement

3 d

28 d

3 d

28 d

338

254

319

3100

5.2

7.7

38.5

51

420