Advances in Materials Science and Engineering / 2020 / Article / Tab 4

Research Article

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

Table 4

Mean and standard deviation (SD) of Schmidt hammer rebound (Sch) values before and after frost cycles.

CyclesFresh1020304050
MeanSDMeanSDMeanSDMeanSDMeanSDMeanSD

Limestone 155.12.254.72.454.22.153.62.952.91.752.42.0
Limestone 252.72.651.82.251.11.950.62.049.91.749.32.1
Limestone 338.41.337.81.436.90.936.21.135.01.634.31.8
Limestone 443.21.842.51.642.01.741.41.940.82.240.12.3
Limestone 549.82.049.02.148.22.447.61.846.52.345.71.9
Limestone 634.00.833.30.932.51.131.71.331.01.030.31.4

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