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Understanding Multimodal Porosity, P...

Bukka, Vaidyam Veerendra Rohit,

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Understanding Multimodal Porosity, Pore Distribution and Permeability of Solid Materials /

Record Type:	Electronic resources : Monograph/item
Title/Author:	Understanding Multimodal Porosity, Pore Distribution and Permeability of Solid Materials // Vaidyam Veerendra Rohit Bukka.
Author:	Bukka, Vaidyam Veerendra Rohit,
Description:	1 electronic resource (152 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
Contained By:	Dissertations Abstracts International86-06B.
Subject:	Materials science. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=31487194
ISBN:	9798346851240

Understanding Multimodal Porosity, Pore Distribution and Permeability of Solid Materials /
Bukka, Vaidyam Veerendra Rohit,

Understanding Multimodal Porosity, Pore Distribution and Permeability of Solid Materials /Vaidyam Veerendra Rohit Bukka. - 1 electronic resource (152 pages)

Source: Dissertations Abstracts International, Volume: 86-06, Section: B.

Porosity in materials can span over multiple length scales, requiring the use of multiple characterization methods for pore structure evaluation. This dissertation focuses on the complexity of pore structures in heterogeneous materials from different perspectives. The major aim was to understand the porosity, pore distributions, and permeability within the limitations of conventional characterization methods such as gas adsorption, mercury intrusion porosimetry, He-pycnometry, and X-ray micro-CT. The research addressed two key areas: understanding the impact of physical size reduction on pore structure accessibility and studying the pore structures of fragile porous materials without damaging their structure,The effects of particle size reduction to analyze porosity and the accessibility of pore structures were systematically evaluated. The results from gas adsorption, mercury intrusion porosimetry, and He-pycnometry revealed that particle size significantly influences pore structure assessment. Depending on pore connectivity, smaller particle sizes led to increased access to isolated pores, affecting porosity, pore volume, and pore size distributions. The study identified critical particle size thresholds for better macropore analysis of low-porosity materials such as shale, with mercury intrusion. A novel approach for identifying isolated pores using residual volume trends from gas adsorption hysteresis was also proposed, which would be useful to identify materials with isolated pores.The physico-chemical characteristics of fragile scale deposits found in Oklahoma's drinking water distribution systems (DWDS) were analyzed with a focus on pore structure properties for the first time. A multi-characterization approach combining gas adsorption, mercury intrusion porosimetry, and X-ray micro-CT allowed for a comprehensive pore structure analysis across length scales from nanometers to millimeters. The inherent heterogeneity of the scales was identified, with distinct continuous layers exhibiting varying porosities and elemental composition. X-ray micro-CT revealed diverse pore size distributions and connectivity patterns along their cross-sectional volumes, emphasizing the complex interplay between scale formation and water quality. Scales with relatively high surface areas comprising tortuous networks from small pores were found to correlate with low corrosion within the water pipes. This study serves as a guide for future research, emphasizing the need to consider both composition and pore structures when assessing the impact of scaling towards corrosion mitigation.

English

ISBN: 9798346851240Subjects--Topical Terms:

543314
Materials science.
Subjects--Index Terms:

Gas adsorption

Understanding Multimodal Porosity, Pore Distribution and Permeability of Solid Materials /
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245 1 0 $a Understanding Multimodal Porosity, Pore Distribution and Permeability of Solid Materials / $c Vaidyam Veerendra Rohit Bukka.
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500 $a Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
500 $a Advisors: Sarin, Pankaj Committee members: Singh, Raman Pal; Smay, James Earl; Ley, Matthew Tyler.
502 $b Ph.D. $c Oklahoma State University $d 2024.
520 $a Porosity in materials can span over multiple length scales, requiring the use of multiple characterization methods for pore structure evaluation. This dissertation focuses on the complexity of pore structures in heterogeneous materials from different perspectives. The major aim was to understand the porosity, pore distributions, and permeability within the limitations of conventional characterization methods such as gas adsorption, mercury intrusion porosimetry, He-pycnometry, and X-ray micro-CT. The research addressed two key areas: understanding the impact of physical size reduction on pore structure accessibility and studying the pore structures of fragile porous materials without damaging their structure,The effects of particle size reduction to analyze porosity and the accessibility of pore structures were systematically evaluated. The results from gas adsorption, mercury intrusion porosimetry, and He-pycnometry revealed that particle size significantly influences pore structure assessment. Depending on pore connectivity, smaller particle sizes led to increased access to isolated pores, affecting porosity, pore volume, and pore size distributions. The study identified critical particle size thresholds for better macropore analysis of low-porosity materials such as shale, with mercury intrusion. A novel approach for identifying isolated pores using residual volume trends from gas adsorption hysteresis was also proposed, which would be useful to identify materials with isolated pores.The physico-chemical characteristics of fragile scale deposits found in Oklahoma's drinking water distribution systems (DWDS) were analyzed with a focus on pore structure properties for the first time. A multi-characterization approach combining gas adsorption, mercury intrusion porosimetry, and X-ray micro-CT allowed for a comprehensive pore structure analysis across length scales from nanometers to millimeters. The inherent heterogeneity of the scales was identified, with distinct continuous layers exhibiting varying porosities and elemental composition. X-ray micro-CT revealed diverse pore size distributions and connectivity patterns along their cross-sectional volumes, emphasizing the complex interplay between scale formation and water quality. Scales with relatively high surface areas comprising tortuous networks from small pores were found to correlate with low corrosion within the water pipes. This study serves as a guide for future research, emphasizing the need to consider both composition and pore structures when assessing the impact of scaling towards corrosion mitigation.
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650 4 $a Materials science. $3 543314
650 4 $a Petroleum geology. $3 3173827
650 4 $a Engineering. $3 586835
650 4 $a Geology. $3 516570
653 $a Gas adsorption
653 $a Hysteresis
653 $a Mercury intrusion porosimetry
653 $a Pore network modeling
653 $a Pore structures
653 $a X-ray micro-CT
690 $a 0794
690 $a 0537
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710 2 $a Oklahoma State University. $b Materials Science and Engineering. $e degree granting institution. $3 3829288
720 1 $a Sarin, Pankaj $e degree supervisor.
773 0 $t Dissertations Abstracts International $g 86-06B.
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