RCA (%)

Compressive strength, f_cu (MPa)

Flexural strength, f’_c (MPa)

Ratio

Ratio

0

43.02

6.23

0.181

1.062

20

37.13

5.72

0.193

1.050

40

35.04

6.00

0.214

1.133

60

32.68

4.23

0.162

0.827

80

27.89

3.87

0.173

0.819

100

26.04

3.19

0.153

0.699

Average for 20% - 100% RCA

0.179

0.906^a

Standard deviation for 20% - 100% RCA

0.025

0.180