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11 Cards in this Set
- Front
- Back
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Consolidation |
Decrease in volume due to expulsion of water |
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Methods of soil stabilization |
Compaction, drainage, preconsolidation, moisture holding or resisting admixture, cement stabilization, mechanical, grouting |
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Meinzer |
Gal/day/ft |
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Quick sand conditions |
Theta prime= 0 |
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Mohr failure criteria |
Unique combo of normal and shear stress, resultant has max iniquity, tau over sigma is maximized |
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Soil used for highways |
Well graded, but we'll drained material free of fines (no silt) |
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Gs of Qtz |
2.65 |
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Permeability |
The ease with which water flows through a soil, depends on grain size, gsd, and size of interconnections between pores |
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Why do quick conditions occur? |
When effective stress at the bottom of the sample reaches zero, soil loses its strength. Seepage forces become so high that they overcome gravitational forces. |
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How does head loss relate to seepage forces? |
Higher head loss= higher seepage forces |
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What's the difference between liquefaction and quick sand? |
Liquefaction is not related to high head loss or critical hydraulic gradient. In liquefaction, volume and void ratio are reduced faster than water can escape, creating high pore pressure. |
