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An approach for characterising electrical conductivity of cement-admixed clays
Soils and Foundations ( IF 3.3 ) Pub Date : 2022-03-15 , DOI: 10.1016/j.sandf.2022.101127
Yannick C.H. Ng 1 , Hardy Yide Kek 1 , Xinping Hu 1 , Liang Ning Wong 1 , Sharlene Teo 1 , Taeseo Ku 1, 2 , Fook-Hou Lee 1
Affiliation  

This paper proposes a framework for relating electrical conductivity of cement-treated marine clay to its strength. The feasibility of relating conductivity to strength is first examined by measuring the two quantities over a range of water-cement and soil-cement ratios as well as curing periods. The results indicate that, within a limited curing period, conductivity changes are sufficiently monotonic to permit its correlation to strength. This leads to the proposal of two empirical relationships, which relate the strength and conductivity to the water-cement and soil-cement ratios of the treated soil. By assuming that there is no diffusion of water from the binder during the relatively short mixing duration, the water-cement and soil-cement ratios can be related to the in-situ water content, water-cement ratio of the binder and the binder mass fraction. If the first two quantities are constant over the site and only the last quantity is a variable, then the conductivity can be uniquely related to the strength. This provides the framework for correlating strength and conductivity measurements, which would allow electrical resistivity measurements to be used to infill point strength data from core samples for quality control of cement-treatment works.



中文翻译:

一种表征水泥混合粘土电导率的方法

本文提出了一个框架,用于将水泥处理的海相粘土的电导率与其强度联系起来。首先通过测量一系列水-水泥和土壤-水泥比以及养护期的两个量来检验将电导率与强度联系起来的可行性。结果表明,在有限的固化期内,电导率变化足够单调,以允许其与强度相关。这导致提出了两个经验关系,将强度和电导率与处理过的土壤的水灰比和土灰比联系起来。通过假设在相对较短的混合持续时间内没有水从粘合剂中扩散,水灰比和土灰比可以与原位含水量有关,粘结剂的水灰比和粘结剂的质量分数。如果前两个量在现场是恒定的,只有最后一个量是变量,那么电导率可以与强度唯一相关。这为关联强度和电导率测量提供了框架,这将允许使用电阻率测量来填充来自岩心样品的点强度数据,以控制水泥处理工程的质量。

更新日期:2022-03-15
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