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Table 7 Statistical values of ratios between estimated and measured strengths.

From: Comparison of Strength–Maturity Models Accounting for Hydration Heat in Massive Walls

Mixtures Statistics Kim et al. (2002a) Pinto and Schindler (2010) Yang (2014)
Age (days) Total Age (days) Total Age (days) Total
3 7 28 91 3 7 28 91 3 7 28 91
S5
γ m 1.084 0.866 0.757 0.825 0.883 0.942 0.888 0.843 0.890 0.890 1.130 1.101 1.044 1.022 1.074
γ s 0.312 0.188 0.057 0.060 0.213 0.273 0.144 0.028 0.062 0.150 0.217 0.177 0.066 0.080 0.144
γ v 0.288 0.218 0.076 0.073 0.241 0.290 0.162 0.033 0.070 0.168 0.192 0.161 0.061 0.078 0.134
G50
γ m 1.475 1.098 0.992 1.072 1.159 0.980 0.969 0.974 1.040 0.991 1.063 1.021 0.965 0.986 1.009
γ s 0.103 0.042 0.066 0.043 0.201 0.035 0.030 0.060 0.040 0.049 0.072 0.079 0.037 0.024 0.065
γ v 0.069 0.038 0.067 0.040 0.173 0.036 0.031 0.062 0.0390 0.049 0.067 0.077 0.039 0.024 0.064
G65S5
γ m 1.393 1.151 1.147 1.170 1.215 0.855 1.010 1.110 1.141 1.029 1.215 1.086 1.053 1.076 1.107
γ s 0.122 0.062 0.037 0.040 0.125 0.080 0.046 0.034 0.039 0.124 0.109 0.046 0.029 0.040 0.087
γ v 0.087 0.054 0.032 0.034 0.103 0.094 0.045 0.030 0.034 0.120 0.090 0.042 0.028 0.037 0.079
  1. γ m , γ s , and γ v indicate the mean, standard deviation, and coefficient of variation of the ratios (\( \gamma = S_{estimation} /S_{test} \)) between the estimates and measured strengths.