Research Article
Immobilization of Simulated Borate Radioactive Waste Solution in Cement-Poly(methylmethacrylate) Composite: Mechanical and Chemical Characterizations
Table 6
Compressive strength values of plain cement, cement-waste form, cement-PMMA composite, and cement-PMMA composite waste form immersed in ground water.
| (a) Samples cured for one month before immersion |
| | Immersion times, days | Compressive strength values (kg/cm2) | | Plain cement | Cement waste forms* | Cement-PMMA composite | Cement-PMMA composite waste form* |
| | 3 | 275 | 185 | 304 | 236 | | 7 | 286 | 190 | 317 | 231 | | 30 | 290 | 219 | 290 | 291 | | 90 | 295 | 210 | 300 | 278 | | 365 | 296 | 216 | 301 | 281 |
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Containing 4% by weight borate waste simulate.
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| (b) Samples cured for 3 months before immersion |
| | Immersion times, days | Compressive strength values (kg/cm2) | | Plain cement | Cement waste forms* | Cement-PMMA composite | Cement-PMMA composite waste form* |
| | 3 | 280 | 192 | 318 | 250 | | 7 | 290 | 202 | 324 | 242 | | 30 | 292 | 226 | 293 | 300 | | 90 | 295 | 216 | 302 | 275 | | 365 | 298 | 213 | 299 | 291 |
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Containing 4% by weight borate waste simulate.
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