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DTIC ADA087020: A Means of Predicting Swelling Pressures of Soils F... |
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by Defense Technical Information Center |
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Swelling soils are responsible for considerable damage to |
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structures and significant monetary losses. The ability |
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to predict and quantify this phenomenon has been the |
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basis for much investigation over the last 50 years. To |
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date, no one method has been found which will adequately |
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accomplish this. In this report, the results of |
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historical investigations are briefly summarized, as are |
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the mechanisms which are involved in the swelling |
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process. Based upon these historical results, two methods |
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for examining empirical data are proposed. The first |
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method correlates the swelling pressure to the natural |
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dry density and the liquid limit of the soil. The second |
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method parallels the first, except that the correlation |
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is accomplished using an introduced parameter (plasticity |
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index/percent of soil passing the no. 200 sieve) instead |
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of the liquid limit. An empirical data base from the |
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Rocky Mountain geographical area is examined using these |
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two methods. The data base consists of both clay soils |
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and sedimentary claystones. Predictive equations are |
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deduced for each analysis method. The first method (using |
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the liquid limit) produces better results, and |
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comparisons of predicted versus measured values are |
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presented for this method. A listing of the data used in |
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the analyses is included in this report. (Author) |
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Date Published: 2017-12-04 22:52:58 |
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Identifier: DTIC_ADA087020 |
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Item Size: 67427192 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Heinz,Walter Ernest; AR... |
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