Table 1 Concrete mix ratios.

From: Optimizing flexural strength of RC beams with recycled aggregates and CFRP using machine learning models

Matrix type

Cement

(kg/m3)

Sand

(kg/m3)

Water

(kg/m3)

RAC

(kg/m3)

NCA

(kg/m3)

Silica fume

(kg/m3)

Fly ash

(kg/m3)

M1

28.39

60.48

16.65

0 0.00

129.60

–

–

M2

28.39

60.48

16.65

38.88

90.72

3.16

–

M3

28.39

60.48

16.65

64.80

64.80

3.16

–

M4

28.39

60.48

16.65

90.72

38.88

3.16

–

D2

19.87

60.48

16.65

38.88

90.72

–

8.52

D3

19.87

60.48

16.65

64.80

64.80

–

8.52

D4

19.87

60.48

16.65

90.72

38.88

–

8.52

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