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首页> 外文期刊>E3S Web of Conferences >Electric Conductivity Probes to Study Change in Degree of Saturation - Bench Top Laboratory Tests
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Electric Conductivity Probes to Study Change in Degree of Saturation - Bench Top Laboratory Tests

机译：电导率探讨饱和度研究变化 - 台阶顶级实验室试验

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Sand characteristics such as liquefaction susceptibility can be affected as a result of change in degree of saturation of sand. New liquefaction mitigation technique by inducing partial saturation in sands is introduced by Yegian et al in 2007[1]. This technique requires to monitor changes in degree of saturation of sand. By nature, changes in degree of saturation of sand can lead in changes in its electric conductivity. Electric conductivity is the property of a material that represents its ability to conduct electric current. Fully saturated sand can conduct electric current better than sand with lower degree of saturation. Therefore, the change in measured electric conductivity can be used to calculate the change in degree of saturation of sand. In 1942, Gus Archie [2] expressed that the electric conductivity of soil is a function of its porosity, degree of saturation, tortuosity and electric conductivity of pore fluid. Using Archie’s law electrical conductivity can be related to the degree of saturation in sands. Typically, electric conductivity probes and meters are instruments which are used to measure electric conductivity. Using electrical conductivity probes, sets of bench top tests were conducted on Ottawa sand to study the relation between degree of saturation and electric conductivity in sand. Partial saturation in sands were created by pouring dry sand into sodium percarbonate solution with a known initial concentration. By nature, sodium percarbonate in water, generates oxygen gas bubbles in time. The changes in electric conductivity in the specimen were measured using electric conductivity meters and probes. In addition, changes in degree of saturation of the specimen were measured using soil phase relations equations. Measured electric conductivity data and calculated degree of saturations were correlated to explore relation between electric conductivity and degree of saturation. This paper presents results of bench top tests, and suggests a relationship between, final degree of saturation of sand and initial concentration of sodium percarbonate solution
机译：诸如液化易感性的砂特性可能受沙饱和程度变化的影响。通过诱导砂体中的局部饱和来引入新的液化缓解技术，在2007年尤安等人介绍[1]。该技术需要监测沙子饱和程度的变化。本质上，沙子饱和程度的变化可能导致其电导率的变化。电导率是代表电流的能力的材料的性质。完全饱和的砂可以比具有较低饱和度较低的沙子更好地进行电流。因此，测量的电导率的变化可用于计算沙子饱和度的变化。 1942年，GUS Archie [2]表明土壤的电导率是其孔隙率，饱和度，粉碎程度和孔隙液的电导率的函数。使用Archie的定律导电率可以与沙子中的饱和度有关。通常，电导率探针和仪表是用于测量电导率的仪器。使用电导率探头，在渥太华沙滩上进行一组台式试验，研究了沙子饱和度和电导率之间的关系。用已知的初始浓度将干砂倒入过碳酸钠溶液中，产生砂中的局部饱和度。本质上，加水中的过碳酸钠，及时产生氧气气泡。使用电导率计和探针测量样品中电导率的变化。此外，使用土相关系方程测量样品的饱和程度的变化。测量的电导率数据和计算的饱和度是相关的，以探索电导率和饱和度之间的关系。本文提出了台式试验的结果，并表明了砂和初始浓度的最终饱和度之间的关系和过碳酸钠溶液

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