Examples of using Subgrade in English and their translations into Swedish
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Colloquial
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Official
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Medicine
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Ecclesiastic
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Ecclesiastic
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Official/political
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Computer
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Programming
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Political
even areas are, in general, based on the quality of the subgrade conditions.
because permanent deformation mostly takes place in subgrade.
but rutting at the subgrade surface has continued with the new aggregate following the shape.
a very simple 2 layer model(subgrade+ road structure)
water released by thawing ice will be“floating” on the top of nearly impermeable frozen road structure or subgrade.
Another suitable dimensioning method against Mode 2 permanent deformation is the Odemark method- with the exception that the method does not always work well on a peat subgrade.
the frost line penetrated quickly to the subgrade without forming ice lenses.
Care should be taken with this however as this solution can increase the loads on the subgrade and increase settlement, especially on peat subgrades. .
For example, a geotextile in a soil replacement should be used where the subgrade is silt
Use a geofabric/geotextile if there is a risk that the old structures or subgrade could mix with the new structure,
the spring thaw problem discussed in Mode 1 above can lead to Mode 2 rutting in the subgrade.
On weak subgrade areas with Mode 2 rutting problems it is recommended that a geotextile is incorporated to prevent the new road structures mixing with the subgrade. .
Subgrade acts natural
On both of these subgrade types a weakened aggregate base layer results
railways and other subgrade enhancement;
The Dynamic Cone Penetrometer is a“low-tech” device appropriate for evaluating the stiffness of road layers and subgrade that can also provide important information on road structures.
In addition soft subgrade sections can be verified from the GPR data based on subgrade moduli values.
This will result in subgrade rutting, but not strictly Mode 2 rutting as subgrade shear will not be the primary cause.
road structure thickness and subgrade frost susceptibility is presented in the ROADEX eLearning lesson on drainage.
The localised heave(or"shoulder") close to the wheel path is clearly visible as is the reduced deformation of the subgrade compared to the surface depression.