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. 2019 May 22;12(10):1662. doi: 10.3390/ma12101662

Table 3.

Fittings of compressive strength and curing time under different confining pressures.

Confining Pressure (kPa)	Fitting Equation	$R^{2}$
0	$q_{u} = 115.7 + 67.6 \ln (D + 1.5)$	0.97
50	$q_{u} = 265.1 + 32.1 \ln (D + 1.5)$	0.83
100	$q_{u} = 231.7 + 78.5 \ln (D + 1.5)$	0.94
150	$q_{u} = 239.0 + 89.9 \ln (D + 1.5)$	0.95