Advances in Materials Science and Engineering / 2020 / Article / Tab 3

Research Article

Estimating Deterioration Rate of Some Carbonate Rocks Used as Building Materials under Repeated Frost Damage Process, China

Table 3

Mean and standard deviation (SD) of point load index strength (Is (50)), MPa, values before and after frost cycles.

CyclesFresh1020304050
MeanSDMeanSDMeanSDMeanSDMeanSDMeanSD

Limestone 16.80.606.80.716.70.556.60.786.40.856.20.96
Limestone 26.30.566.10.495.80.535.70.615.50.485.30.42
Limestone 34.80.444.60.564.50.394.30.474.00.593.60.51
Limestone 46.00.595.80.665.80.495.50.575.30.695.10.77
Limestone 55.80.395.70.475.50.375.40.495.20.434.90.45
Limestone 64.10.404.10.363.90.413.70.483.40.493.00.53

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