Advances in Civil Engineering / 2014 / Article / Tab 5

Research Article

Flexural Toughness Properties of Reinforced Steel Fibre Incorporated Alkali Activated Slag Concrete

Table 5

Toughness properties of various steel fibre reinforced geopolymer concrete.

Mix IDGC5GSF1GSF2GSF3

Steel fibre dosage0%0.50%1%1.50%

Testing age (days)328328328328
Flexural strength (N/mm2)6.127.088.098.6610.1211.213.0313.2
Absolute toughness (N-m)0.6519.227.2921.9289.22105.78136.02171.54
Post crack toughness (N-m)005.0411.7970.1574.61115.12135.03
Residual toughness (N-m)004.1310.8363.3730.31103.57157.43
Toughness index (Re3)000.380.420.410.450.540.76

Note: test results denote an average of 3 concrete specimens tested with standard deviation of 12.25 and the coefficient of variation around 0.21.