DISPERSIVE BEHAVIOUR OF MONTMORILLONITE MINERAL FROM MICRO - STRUCTURAL AND MACRO-STRUCTURAL POINTS OF VIEW

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OUHADI V.R.; GOUDARZI AMIR REZA

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Journal: MODARES TECHNICAL AND ENGINEERING Year:2007 | Volume:- | Issue:29 (SPECIAL ISSUE ON CIVIL ENGINEERING) Page(s): 51-60

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Title

DISPERSIVE BEHAVIOUR OF MONTMORILLONITE MINERAL FROM MICRO - STRUCTURAL AND MACRO-STRUCTURAL POINTS OF VIEW

Author(s)

OUHADI V.R. | GOUDARZI AMIR REZA | Issue Writer Certificate

Keywords

MONTMORILLONITEQ3

BENTONITEQ3

DISPERSIVITY POTENTIALQ3

SOIL PHQ3

CLAY PARTICLEQ3

Abstract

The main objective of this research is to investigate factors governing the dispersivity behaviour of MONTMORILLONITE due to the pore fluid characteristics, mainly pH variations. To achieve this objective, a series of BENTONITE samples were laboratory dispersed by the application of sodium sulfate and sodium hydroxide. A BENTONITE sample was used in this study in which its main fraction was MONTMORILLONITE. Then, the pH of samples was changed by the use of sulfuric acid. Following this preparation process, with the performance of a series of physical experiments and micro-structural evaluation, the behaviour of soil samples were investigated.The results of this study indicate that in the presence of low concentration of sodium cations, the potential of dispersivity increases. Then with a further increase in sodium concentration, the soil structure changes from dispersive structure to a more flocculated structure. On the other hand, at the sample with maximum dispersive structure and specific concentration of sodium cation, the increase on the concentration of hydrogen ion causes a decrease on the dispersivity performance of soil. The behaviour is a function of pH and anion type of electrolyte. SEM pictures approve the changes on the soil structure due to the changes on the pore fluid characteristics. In addition, a decrease on the peak location of the major basal spacing of BENTONITE in XRD analysis after the application of acid also confirms the decrease of the dispersivity behaviour of soil.

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APA: Copy

OUHADI, V.R., & GOUDARZI, AMIR REZA. (2007). DISPERSIVE BEHAVIOUR OF MONTMORILLONITE MINERAL FROM MICRO - STRUCTURAL AND MACRO-STRUCTURAL POINTS OF VIEW. MODARES TECHNICAL AND ENGINEERING, -(29 (SPECIAL ISSUE ON CIVIL ENGINEERING)), 51-60. SID. https://sid.ir/paper/25126/en

Vancouver: Copy

OUHADI V.R., GOUDARZI AMIR REZA. DISPERSIVE BEHAVIOUR OF MONTMORILLONITE MINERAL FROM MICRO - STRUCTURAL AND MACRO-STRUCTURAL POINTS OF VIEW. MODARES TECHNICAL AND ENGINEERING[Internet]. 2007;-(29 (SPECIAL ISSUE ON CIVIL ENGINEERING)):51-60. Available from: https://sid.ir/paper/25126/en

IEEE: Copy

V.R. OUHADI, and AMIR REZA GOUDARZI, “DISPERSIVE BEHAVIOUR OF MONTMORILLONITE MINERAL FROM MICRO - STRUCTURAL AND MACRO-STRUCTURAL POINTS OF VIEW,” MODARES TECHNICAL AND ENGINEERING, vol. -, no. 29 (SPECIAL ISSUE ON CIVIL ENGINEERING), pp. 51–60, 2007, [Online]. Available: https://sid.ir/paper/25126/en

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