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. 2019 Aug 28;5(8):e02256. doi: 10.1016/j.heliyon.2019.e02256

Table 9.

Mathematical relation between the secondary rate of water absorption and curing age.

mix designation mathematical equation R2
R0 y = 1.3825x−0.202 0.8874
M1 y = 1.2867x−0.196 0.8513
M2 y = 1.0801x−0.17 0.8707
R2 y = 0.9069x−0.148 0.917
M3 y = 0.6673x−0.095 0.939
R1M2 y = 0.5983x−0.101 0.8802
R1M3 y = 0.5871x−0.108 0.9162
M4 y = 0.5149x−0.092 0.8813
R2M2 y = 0.4767x−0.081 0.8739
R2M3 y = 0.463x−0.087 0.9454