using of different systems of soil plough after changing unconsciously and non-scientific of land use, other soil physical and chemical characteristics affected. this fact, especially in marginal lands and mountainous regions is more visible. this research compared with the purpose of studying land use changing on some soil physical and chemical characters like very tiny sand percent, ph, ec, c...

The maximum shear modulus (Gmax) is an important factor determining soil deformation, and it closely related to engineering safety seafloor stability. In this study, a series of bender element tests was carried out investigate the Gmax hydrate-bearing carbonate sand (CS)–silt mixture. mixture adopted CS:silt ratio 1:4 by weight mimic fine-grained deposit South China Sea (SCS). Tetrahydrofuran (...

for optimum planning, utilization, and management of lands, recognition of spatial variability of soil properties is necessary. this research was conducted to evaluate spatial variability of soil properties in 5000 ha of arsenjan plain in fars province. for this purpose, soil salinity, ph, particle size percentage, sodium, potassium, and organic carbon (oc) were measured on a systematic squared...

The application of fractal geometry to describe soil structure is an increasingly useful tool for better understanding the performance of soil systems. Only a few studies, however, have focused on the structure of rhizospheric zones, where energy flow and nutrient recycling most frequently occur. We used fractal dimensions to investigate the characteristics of particle-size distribution (PSD) i...

mas·hyy saturated soil liquefaction during earthquakes, shnakhthshdhyy phenomenon that many researchers in the past three decades has attracted. more research on the liquefaction of saturated soils has focused mas·hyy the natural soils are rarely composed of clean sands, and mixed with clay or silt soils, which is why the study has important ghyrkhmyry and paste. despite numerous studies on the...

Isotropic compression tests were conducted on a series of gap-graded mixtures carbonate sand (CS) from the South China Sea and fine crushed quartz silt. The purpose these is to expl...