Results 21 to 30 of about 20,010 (257)

Parameter estimation of soil water retention curve with Rao-1 algorithm

open access: yesJournal of Agricultural Engineering, 2022
The soil water retention curve (SWRC) has a significant role in determining the unsaturated properties of soil. A stochastic optimization algorithm named Rao-1 algorithm is employed to estimate the parameters of the SWRC model in this paper.
Zhongju Wang, Chao Huang, Long Wang
doaj   +1 more source

Measurement and prediction of water retention curve of remolded loess with different degrees of compaction

open access: yesYantu gongcheng xuebao, 2021
In order to study the water retention curve of remolded loess with different degrees of compaction, the self-made low suction measurement device, tensiometer and GDS unsaturated soil triaxial apparatus were used to measure the water retention curve of ...
WANG Lai-cai 1, 2, HU Hai-jun 1, 2, WANG Chen 1, 2, KANG Shun-xiang 1, 2
doaj   +1 more source

Experimental study on soil-water characteristic curve and permeability curve of white sandstone and mudstone in northern Xinjiang

open access: yesYantu gongcheng xuebao, 2020
The foundation soil of large channels in northern Xinjiang is mostly white sandstone and mudstone, and its hydraulic characteristics determine the formation and development of channel structural diseases.
TAN Zhi-xiang 1, WANG Zheng-zhong 1, 2, GE Jian-rui 1, JIANG Hao-yuan 1, LIU Quan-hong 1, MENG Xiao-dong 1
doaj   +1 more source

Using Clay Content to Estimate Soil Water Characteristic Curve

open access: yesGuan'gai paishui xuebao, 2021
【Objective】 Water retention curve is a parameter describing the ability of a soil to hold water; it is modulated by soil structure and texture. The aim of this paper is to evaluate the feasibility of using clay content to estimate water retention curve ...
XIA Tian, TIAN Juncang
doaj   +1 more source

Nanoscale soil-water retention curve of unsaturated clay via molecular dynamics [PDF]

open access: yesE3S Web of Conferences, 2023
This paper characterizes nanoscale soil-water retention mechanism of unsaturated clay through molecular dynamics simulation. Series of molecular dynamics simulations of clay at low degrees of saturation were conducted.
Zhang Zhe, Song Xiaoyu
doaj   +1 more source

Comparison Of Selected Pedotransfer Functions For The Determination Of Soil Water Retention Curves

open access: yesSlovak Journal of Civil Engineering, 2015
Soil water retention curves were measured using a sandbox and the pressure plate extractor method on undisturbed soil samples from the Borská Lowland. The basic soil properties (e.g. soil texture, dry bulk density) of the samples were determined.
Kupec Michal   +2 more
doaj   +1 more source

Microbial Effects on Hydraulic Properties of Sewage Sludge-Induced Water-Repellent Soil. [PDF]

open access: yesDesert
Soil water repellency (SWR) is a widespread natural phenomenon that results from a complex interplay between the hydrosphere, lithosphere, biosphere, atmosphere, and anthroposphere.
Nasrin Karimian   +4 more
doaj   +1 more source

New empirical-point pedotransfer functions for water retention data for a wide range of soil texture and climates

open access: yesInternational Soil and Water Conservation Research
Knowing soil hydraulic properties is essential to support soil use and management practices; however, their measuring is commonly expensive and time-consuming. Thus, pedotransfer functions (PTFs) have been used to quantify physical properties such as the
Aline Mari Huf dos Reis   +2 more
doaj   +1 more source

Water retention curve model based on micro-pore filling and capillary condensation theories

open access: yesRock and Soil Mechanics, 2021
Water retention curve (WRC) is an important tool to study the hydraulic and mechanical properties of unsaturated soils, such as permeability, strength and deformation properties.
LIU Zhang-rong   +5 more
doaj   +1 more source

Study on water retention characteristics of coastal soils in Northern Zhejiang Province

open access: yes浙江大学学报. 农业与生命科学版, 2001
The water retention characteristics of coastal soils in Zhejiang Province were studied. Results showed that water retention curves of coastal soils were a typical double-curve and the best modal to characterize the relationship between soil water content
WANG Hu-bei, LU Sheng-gao
doaj   +1 more source

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