Advances in Materials Science and Engineering / 2020 / Article / Tab 1

Research Article

Mechanical Performance and Durability Evaluation of Sandstone Concrete

Table 1

Characteristics of Portland cement.

ParameterValue

Physical characteristics
 Density (g/m3)3.10
 Initial set (min)175
 Final set (min)315
Mechanical characteristics
 3-day compressive strength (MPa)16.9
 7-day compressive strength (MPa)25.0
 28-day compressive strength (MPa)42.0
Chemical characteristics
 SiO2 (%)21.67
 Al2O3 (%)4.76
 Fe2O3 (%)4.68
 CaO (%)61.31
 MgO (%)2.88
 SO3 (%)1.98
 Na2O (%)0.20
 K2O (%)0.51
 Equivalent alkali (%)0.54
 SiO2 (%)21.67
 LOI (%)4.84

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