Ángeles Hugo Martínez, Moreno José Gabriel Ríos, Rubio Cesar Augusto Navarro, Castillo Rodrigo Rafael Velázquez, Ronquillo-Lomeli Guillermo, Carrillo-Serrano Roberto Valentín, Perea Mario Trejo
Division de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro, Mexico.
Facultad de Ingeniería, Universidad Autónoma de Querétaro, Querétaro, Mexico.
Sci Rep. 2025 Jul 1;15(1):22049. doi: 10.1038/s41598-025-05317-1.
Soil electrical resistivity is a fundamental property in various engineering applications, such as electrical, geotechnical or geophysical; its application can even be extended to those aspects related to agriculture. On the other hand, worldwide, there are soils with high resistivity. In the Middle East, for example, there are high resistivity values that range between 10,000 Ωcm and 200,000 Ωcm (ohm per centimeter). In West Africa, desert soils reach up to 30,000 Ωm. Also, in some Asian countries, resistivity values of up to 200,000 Ωm have been measured. Furthermore, various studies have shown that there is an inverse relationship between resistivity and soil humidity content. Thus, to counteract the negative effects due to the high resistivity of soils, Ground Enhancement Material (GEM) have been developed, composed mainly of materials with high hygroscopicity and low resistivity. The objective of this article was to investigate the relationship between electrical resistivity and humidity incorporation in the development of a GEM. Combinations of different chemical materials such as magnesium sulfate (MgSO), sodium sulfate (NaSO) and sodium carbonate (NaCO), combined with bentonite clay, were studied. The mixtures were evaluated through laboratory tests to determine their electrical resistivity by varying the humidity between 30% and 60% at different frequencies. The mixture containing 100% NaSO was found to have the lowest resistivity, as varying the humidity content from 30 to 60% reduced the resistivity from 58 Ωcm to 23 Ωcm. The results obtained can provide researchers, engineers, and specialists with the potential for the developed GEM to be used in soils with varying humidity conditions in different systems, depending on the frequency at which electrical resistivity is measured.
土壤电阻率是各种工程应用中的一项基本特性，如电气、岩土或地球物理应用；其应用甚至可以扩展到与农业相关的那些方面。另一方面，在全球范围内，存在高电阻率的土壤。例如，在中东地区，电阻率值很高，范围在10000Ω·cm至200000Ω·cm（欧姆每厘米）之间。在西非，沙漠土壤的电阻率高达30000Ω·m。此外，在一些亚洲国家，也测量到了高达200000Ω·m的电阻率值。此外，各种研究表明，电阻率与土壤湿度含量之间存在反比关系。因此，为了抵消土壤高电阻率带来的负面影响，已开发出地面增强材料（GEM），其主要由具有高吸湿性和低电阻率的材料组成。本文的目的是研究在开发地面增强材料时，电阻率与湿度掺入之间的关系。研究了不同化学材料如硫酸镁（MgSO）、硫酸钠（NaSO）和碳酸钠（NaCO）与膨润土的组合。通过实验室测试对混合物进行评估，通过在不同频率下将湿度在30%至60%之间变化来确定其电阻率。发现含有100%NaSO的混合物具有最低的电阻率，因为将湿度含量从30%变化到60%时，电阻率从58Ω·cm降低到了23Ω·cm。所获得的结果可以为研究人员、工程师和专家提供这样的可能性，即根据测量电阻率的频率，所开发的地面增强材料可用于不同系统中湿度条件各异的土壤。
