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. 2020 Jun 27;13(13):2886. doi: 10.3390/ma13132886

Table 2.

Summary of statistical analysis.

Curing Age / Variable fc (MPa) Ec (MPa) Ed.Vp (MPa) Ed.Vs (MPa) Ed.LT (MPa) Ed.TR (MPa)
Mix 1 Mix 2 Mix 1 Mix 2 Mix 1 Mix 2 Mix 1 Mix 2 Mix 1 Mix 2 Mix 1 Mix 2
Day 4 N 16 54 16 54 16 54 16 54 16 54 16 54
μ 8.05 24.17 10,030 16,791 19,766 30,953 16,273 19,184 15,455 24,310 14,939 23,878
COV 3.86 5.04 5.2 7.63 5.99 4.1 3.96 13.59 4.37 3.69 4.69 3.89
Day 7 N 9 55 9 55 9 55 9 55 9 55 9 55
μ 10.05 29.49 11,526 18,190 23,367 32,912 15,664 22,036 17,262 26,129 16,876 25,252
COV 2.41 3.63 2.99 6.57 2.17 3.73 13.17 8.33 2.56 2.31 2.51 2.62
Day 14 N 16 50 16 50 16 50 16 50 16 50 16 50
μ 14.08 38.09 14,666 20,874 27,706 35,191 17,710 23,913 20,259 28,542 19,636 27,516
COV 3.69 5.34 8.50 7.02 4.71 3.35 12.38 2.77 3.49 2.47 3.38 2.97
Day 28 N 32 50 32 50 32 50 32 50 32 50 32 50
μ 19.19 43.94 16,699 23,085 30,830 36,870 21,019 25,329 23,705 30,375 22,769 29,670
COV 4.35 4.78 7.54 7.12 3.73 2.52 12.58 1.87 3.65 2.13 3.89 2.68