[1] In arctic tundra, cryoturbation resulting from frost heave, cracking, and other cryogenic processes produces patterned ground such as nonsorted circles, stripes, nonsorted polygons, and earth hummocks. We studied cryogenic structures and morphological properties of soils associated with patterned-ground features along a bioclimate gradient in Arctic Alaska and Canada from north (subzone A) ...

Zinc (Zn) fertilizer is not currently recommended for rice grown on clay or clay loam soils in Arkansas. In 2003, eight field sites were established to evaluate the response of rice grown on clay soils to Zn fertilization. Shortly before or after seeding, granular Zn fertilizer was applied to the soil surface at rates of 0, 5, 10, and 20 lb Zn/acre. Tissue Zn concentration 10 to 14 days after f...

Expansive soils exist in many countries worldwide, and their characteristics make them exceedingly difficult to engineer. Due its significant swelling shrinkage characteristics, expansive soil defies of the stabilization solutions available engineers. Differential heave or settlement occurs when swells shrinks, causing severe damage foundations, buildings, roadways, retaining structures. In suc...

Fingered infiltration of a wetting fluid through porous network is widely studied subject in the field mechanics. However, effect this heterogeneous percolation on response granular materials, particular fine-grained soils, poorly investigated and badly understood topic which deserves deep analysis, considering, among others, possible applications soil remediation underground energy storage. Th...

This paper reviews commonly used parameters and prediction models for assessing the permeability of granular soils. Following a review published soil permeability, dimensional homogenous transformation model a-priori estimation was calibrated using large database (CG/KSAT/7/1278) comprising data wide range soils sourced from over 50 publications. The new requires knowledge void ratio gradation ...

Fabric anisotropy is a key component to understand the behaviour of granular soils. In general, experimental data on fabric for real soils are very limited, especially in critical state. this paper, x-ray tomography measurements used provide contact inside shear bands two The then assess validity Anisotropic Critical State Theory (ACST) and accuracy evolution law that was previously developed f...