Impact of wetting and drying cycles on soil structure dynamics

Geoderma ◽  
2019 ◽  
Vol 345 ◽  
pp. 63-71 ◽  
Author(s):  
Julius Diel ◽  
Hans-Jörg Vogel ◽  
Steffen Schlüter
Keyword(s):  
Soil Structure ◽  
Wetting And Drying ◽  
Wetting And Drying Cycles ◽  
Structure Dynamics

Evaluation of load support capacity of remoulded fine and coarse textured soils as affected by wetting and drying cycles

Soil Research ◽  
2015 ◽  
Vol 53 (5) ◽  
pp. 512 ◽  
Author(s):  
Maryam Salehian Dastjerdi ◽  
Abbas Hemmat
Keyword(s):  
Soil Structure ◽  
Cylindrical Sample ◽  
Plastic Limit ◽  
Confined Compression ◽  
Flood Irrigation ◽  
Wetting And Drying ◽  
Wetting And Drying Cycles ◽  
Significant Difference ◽  
Compaction Stress ◽  
Water Contents

Soils of south of Iran used for sugarcane production are frequently exposed to wetting and drying cycles under flood irrigation. The effects of this process on estimation of the load support capacity (pre-compaction stress; σpc) of two soils using plate sinkage test (PST) and confined compression test (CCT) were studied. Large reconstructed specimens of topsoils were subjected to 5 wetting and drying cycles. The specimens, with/without wetting and drying cycles, were then compressed under two pre-loads (100 and 200 kPa) at two water contents (0.9 PL and 1.1 PL, where PL is plastic limit). The centre section of the preloaded soil specimens was firstly submitted to a 50 mm PST; then immediately one cylindrical sample was cored for CCT. The results indicated that for both soils, without wetting and drying cycles, σpc estimated from PST did not show any significant difference with the values of preload. This method can, therefore, be used to determine the load support capacity for tilled soils. However, wetting and drying cycles caused a significant over-estimation of σpc by PST. Thus, the concept of pre-compaction stress does not account for the effects of changes in soil structure due to wetting and drying.

scholarly journals X-ray microtomography analysis of soil pore structure dynamics under wetting and drying cycles

Geoderma ◽  
2020 ◽  
Vol 362 ◽  
pp. 114103 ◽  
Author(s):  
Luiz F. Pires ◽  
André C. Auler ◽  
Waldir L. Roque ◽  
Sacha J. Mooney
Keyword(s):  
Pore Structure ◽  
Wetting And Drying ◽  
X Ray ◽  
Wetting And Drying Cycles ◽  
Structure Dynamics

X‐ray tomography analysis of soil biopores structure under wetting and drying cycles

2021 ◽  
Author(s):  
Sougueh Cheik ◽  
Pascal Jouquet ◽  
Jean‐Luc Maeght ◽  
Yvan Capowiez ◽  
T.M. Tran ◽  
...  
Keyword(s):  
Wetting And Drying ◽  
X Ray ◽  
Wetting And Drying Cycles ◽  
Tomography Analysis

Effect of wetting and drying cycles on microstructure of rock based on SEM

2019 ◽  
Vol 78 (6) ◽  
Author(s):  
Xiaojie Yang ◽  
Jiamin Wang ◽  
Chun Zhu ◽  
Manchao He ◽  
Yang Gao
Keyword(s):  
Wetting And Drying ◽  
Wetting And Drying Cycles
Sign in / Sign up

Export Citation Format

Share Document