Research Article
Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm
Table 8
Design parameters for carbonation design.
| (a) |
| | Type | Structure A | Structure B |
| Intended
service life (year) | 75 | 100 | | Design cover depth (mm) | 50 | 30 | | Exterior condition | R.H.: 65% | R.H: 75% | | Temp.: 12.7°C | Temp.: 22°C | | CO2 concentration (ppm) | 2,700 | 980 | | Durability limit state | carbonation depth = cover depth |
|
|
| (b) |
| Assumed cement
weight (kg/m3) | 300 | 330 | 335 | 370 | Intended diffusion
coefficient × 10−11
(m2/sec) | 1,742 | 1,916 | 1,248 | 1,378 |
|
|
