Due to the physical and chemical properties of some clays (such as the Lias Group) large swelling occurs when water is absorbed. Conversely when the water dries up these clays contract (shrink). The presence of these clay minerals is what allows soils to have the capacity to shrink and swell. Some of these clay minerals are: smectite, nontronite, bentonite, chlorite, montmorillonite, beidellite, NettetLinear Extensibility Percent. "Linear extensibility percent" is the linear expression of the volume difference of natural soil fabric at 1/3-bar or 1/10-bar water content and oven dryness. The volume change is reported as percent change for the whole soil.
2.1 Bulk Density and Linear Extensibility - Grossman - ACSESS
NettetThe coefficient of linear extensibility (COLE) is a quantitative expression of the capacity of a soil to swell when moist and to shrink and crack when dry. COLE values are used to characterize soils in their natural condition and to group them according to their swelling tendencies. They are useful in predicting potential swelling problems with agricultural … prince randhawa
Coefficient of linear extensibility of soil can be estimated from ...
NettetOrganic carbon, cation exchange capacity, and percent base saturation of the soils range from 0.41 to 4.06%, 26.42 to 60.94 cmol (+)kg-1 and 56.58 to 93.97%, respectively. NettetClay content: 35 to 60 percent Linear Extensibility Potential (LEP): exceeds 7 Vertical cracks: filled with material similar to the A horizon Exchangeable sodium percentage: 10 to 30 percent Effervescence: none to strong Reaction: neutral to moderately alkaline BCkn horizon: Hue: 5YR or 7.5YR Value: 4 or 5 dry, 3 or 4 moist Nettet2. okt. 2016 · clods for characterizing expansive soils. The coefficient of linear extensibility (COLE) is one of the important engineering properties of soils which relates to the clay content of undisturbed... plehve assassination