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The Scientific World Journal
/
2013
/
Article
/
Tab 5
/
Research Article
Mechanical Properties of Recycled Concrete in Marine Environment
Table 5
Data for building the grey model (MPa).
No.
NC
28.92
28.65
28.39
27.62
26.86
26.33
25.80
RC-30
27.34
27.00
26.66
26.18
25.70
24.60
23.49
RC-60
25.79
25.39
24.99
24.21
23.43
22.77
22.11
Is the mean value of
and
(
, 4, 6).