Advances in Civil Engineering / 2018 / Article / Tab 3

Research Article

An Experimental Study on the Microstructures of Cemented Paste Backfill during Its Developing Process

Table 3

Main physical properties of P.O. 32.5 Portland cement.

ItemsValueReference

Fineness (<0.045 mm) (%)11.00≤30
Initial setting time (min)162.00≥45
Final setting time (min)203.00≤390
28-day flexural strength (MPa)6.606.5
28-day uniaxial compressive strength (MPa)31.5032.5

Note: reference of P.O. 32.5 Portland cement is from China’s cement strength classification.

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