Research Article

Mechanical Properties of Recycled Concrete in Marine Environment

Table 5

Data for building the grey model (MPa).

No.

NC28.9228.6528.3927.6226.8626.3325.80
RC-3027.3427.0026.6626.1825.7024.6023.49
RC-6025.7925.3924.9924.2123.4322.7722.11

Is the mean value of and ( , 4, 6).