analysis and design of jointless bridge decks
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Table B.l Creep and Shrinkage Strains (millionths) (From Reference 23)
153
Concrete R...... Strength = 3500 psiAverage PresIress = 600 psi
Relative Hulnidlty= 70'%Volume/Surface Ratio = 1.5 in.
Time, Creep Shrinkagedays
Nonnal weight Ughtweigbt Moist cure Accelerated cure
1 29 43- 16 93 51 76 44 265 65 97 70 437 76 114 93 589 86 127 115 72
10 90 133 124 7820 118 176 204 13630 137 204 258 18040 150 224 299 21550 161 239 329 24360 169 252 354 26670 177 263 373 28680 183 272 390 30290 188 280 403 317
100 193 287 415 329200 222 331 477 4001 Yr 244 363 511 4433 Yr 273 407 543 4865 Yr 283 422 549 495
Final 315 468 560 510
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