sandy soil
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2022 ◽  
Vol 260 ◽  
pp. 107291
Zengzhen Song ◽  
Yuxing Peng ◽  
Zizhong Li ◽  
Shuai Zhang ◽  
Xiaotong Liu ◽  

2022 ◽  
Vol 276 ◽  
pp. 108387
Carlos Felipe dos Santos Cordeiro ◽  
Daniel Rodela Rodrigues ◽  
Fábio Rafael Echer

2022 ◽  
Vol 304 ◽  
pp. 114307
Carla Comadran-Casas ◽  
Carl J. Schaschke ◽  
Joseph C. Akunna ◽  
M. Ehsan Jorat

2022 ◽  
Vol 170 ◽  
pp. 104284
Chidozie J. Oraegbunam ◽  
Sunday E. Obalum ◽  
Toshihiro Watanabe ◽  
Yvonne M. Madegwa ◽  
Yoshitaka Uchida

Jianchao Wu ◽  
Jie Fang ◽  
Jianjun Wang ◽  
Yabin Liang ◽  
Weijie Li

Air-drying process of soil is a crucial procedure in geological and geotechnical engineering. Drying-induced ground subsidence and damage to overlying buildings is a widespread and urgent problem. Monitoring of drying-induced water evaporation in soil is of great importance. In this paper, soil moisture loss monitoring based on lead zirconate titanate (PZT) transducer using electro-mechanical impedance (EMI) technique was investigated. A physical model test in our laboratory was conducted to study the feasibility and applicability. In the experimental research, three identical PZT transducers that were wrapped with waterproof insulation glue were pre-embedded inside a cohesive soil specimen. In addition, another PZT transducer was embedded in a sandy soil specimen to explore the application effect in soil with different composition. EMI signatures of these four PZT patches during the air-drying process were collected and analyzed. Experimental results indicated that the peak frequency in the conductance signatures presented a rightward shift as the water evaporates. Moreover, the corresponding peak magnitude keep decreasing with the continuous development of soil moisture loss. To better quantify the variations, two statistical metrics including root mean square deviation (RMSD) and mean absolute percentage deviation (MAPD) were employed to study the changing characteristics of the EMI signatures. All these two metrics increase coincidentally in the process. Experimental results demonstrate that cohesive and sandy soil moisture loss monitoring by using the embedded PZT transducer is feasible and reliable. This work also serves as a proof-of-concept study to demonstrate the performance of the EMI technique in monitoring the soil moisture content.

2022 ◽  
Vol 53 ◽  
Aparecida Barbosa de Paiva ◽  
Carlos Alberto Kenji Taniguchi ◽  
Ricardo Espindola Romero ◽  
Deborah dos Santos Garruti ◽  
Marcela Claudia Pagano ◽  

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