| Description |
ix, 58 leaves : illustrations ; 29 cm |
| Summary |
"The effect of temperature, organic carbon content, and preloading on secondary consolidation of Bryce clay has been studied. A straight line plot of void ratio versus logarithm of time was established in secondary consolidation for long term loading periods up to one month. Temperature changes within the range of 5°C. to 45°C. were studied in the secondary consolidation phase at different stress levels and different carbon contents of the soil. Secondary consolidation in a preloading cycle at a stress level of 2 tsf unloaded to 1 tsf and reloaded to 2 tsf was studied. The preloading tests were at temperatures of 5°C., 25°C., and 45°C. on samples of varying carbon contents. It was found that the value of C[subscript alpha] (secondary consolidation rate expressed as the void ratio per cycle of logarithm of time) could be reduced by preloading at a constant temperature. At higher effective stresses, C[subscript alpha] was found to be dependent on the carbon content of the soil at 25°C. and 45°C., and under the same conditions, C[subscript alpha] was independent of the carbon content at 5°C. At a given temperature a value of C[subscript alpha] was established. If the temperature was increased for a period of time and then lowered to the original temperature, the final en was considerably less than the original C[subscript alpha]. If the temperature was decreased between a given initial and final temperature, it was found that C[subscript alpha] was only slightly affected"--Abstract, leaves ii-iii. |
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