Quantification of Clay Minerals and Its Correlation with Chemical and Index Properties of Soil

IF 1 Q4 ENGINEERING, CIVIL

Jordan Journal of Civil Engineering Pub Date : 2023-01-01 DOI:10.14525/jjce.v17i1.14

V. Elamathi, S. Jayalekshmi

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引用次数: 0

Abstract

Clay-mineral composition is one of the factors that determine the physical and engineering behaviours of finegrained soils; however, it is usually ignored in soil investigations, because the determination of clay-mineral composition necessitates using sophisticated instruments which are time-consuming and require skilled personnel. Many correlations exist for faster prediction of soil engineering properties from its index properties, but correlations for quicker determination of the amount of clay mineral in the soil are still unexplored. This study focuses on determining the amount of clay mineral present in a soil sample rapidly by correlating claymineral percentages with soil index and chemical properties, which aids in selecting proper construction guidelines before undertaking construction work. Clay-soil samples collected from 20 different locations in Tamil Nadu state in India were subjected to chemical tests, like cation exchange capacity (CEC), specific surface area (SSA) and total potassium (TP), to quantify clay minerals such as kaolinite, illite and montmorillonite. Correlations were developed for kaolinite, illite and montmorillonite percentages in terms of chemical (CEC, SSA and TP) and index properties. It was observed that the montmorillonite percentage has shown a stronger correlation with soil index properties than illite and kaolinite percentages, because of its physico-chemical behaviour. KEYWORDS: Correlation, Clay minerals, Quantification, CEC, SSA, Montmorillonite

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黏土矿物的定量及其与土壤化学性质和指标性质的相关性

粘土矿物组成是决定细粒土物理和工程特性的因素之一;然而，在土壤调查中，它通常被忽略，因为确定粘土矿物组成需要使用复杂的仪器，既费时又需要熟练的人员。从指标性质上更快地预测土壤工程性质存在许多相关性，但更快地确定土壤中粘土矿物的量的相关性尚未得到探索。本研究的重点是通过将粘土矿物百分比与土壤指数和化学性质相关联，快速确定土壤样品中粘土矿物的含量，这有助于在进行施工工作之前选择适当的施工指导方针。从印度泰米尔纳德邦20个不同地点收集的粘土-土壤样本进行了化学测试，如阳离子交换容量(CEC)、比表面积(SSA)和总钾(TP)，以量化高岭石、伊立石和蒙脱石等粘土矿物。研究了高岭石、伊利石和蒙脱石在化学(CEC、SSA和TP)和指标性能方面的相关性。由于蒙脱土的理化性质，蒙脱土的百分比与土壤指标的相关性比伊利石和高岭石的百分比更强。关键词:相关性，粘土矿物，定量，CEC, SSA，蒙脱土

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来源期刊

Jordan Journal of Civil Engineering ENGINEERING, CIVIL-

CiteScore

2.10

自引率

27.30%

发文量

期刊介绍： I am very pleased and honored to be appointed as an Editor-in-Chief of the Jordan Journal of Civil Engineering which enjoys an excellent reputation, both locally and internationally. Since development is the essence of life, I hope to continue developing this distinguished Journal, building on the effort of all the Editors-in-Chief and Editorial Board Members as well as Advisory Boards of the Journal since its establishment about a decade ago. I will do my best to focus on publishing high quality diverse articles and move forward in the indexing issue of the Journal.