Comparative Evaluation of Geotextile Pore Sizes Using Bubble Point Test and Image Analysis

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Total Pages : 9 pages
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Book Synopsis Comparative Evaluation of Geotextile Pore Sizes Using Bubble Point Test and Image Analysis by : AH. Aydilek

Download or read book Comparative Evaluation of Geotextile Pore Sizes Using Bubble Point Test and Image Analysis written by AH. Aydilek and published by . This book was released on 2007 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of the filtration performance of a geotextile filter necessitates accurate information about the size distribution of geotextile pore openings. The effectiveness of the bubble point test in determining the pore and constriction sizes of geotextiles was evaluated. The characteristic woven geotextile pore and nonwoven geotextile constriction sizes, O95, were determined for a variety of specimens and compared with both the manufacturers' reported AOS values, and with those determined from the two previously developed image-based procedures and theoretical equations. The results indicated that the O95 sizes of woven mono and multifilament geotextiles determined by image analyses compared well with the AOS values, whereas the same observations were not made for the bubble point-based O95 sizes. The O95 constriction sizes of various nonwoven geotextiles obtained by the bubble point test were not comparable to the manufacturers' reported AOS values, indicating the limitation of ASTM D 4751 in determining constriction sizes. A direct method, such as image analysis, may be a better approach for determining the pore sizes of woven geotextiles, whereas the bubble point method should be preferred to determine constriction sizes in a nonwoven geotextile. Recommendations are made in regard to improvements in the current ASTM standard on bubble point testing.

Discussion "Comparative Evaluation of Geotextile Pore Sizes Using Bubble Point Test and Image Analysis" by Aydilek, A. H., D'Hondt, D., and Holtz, R.D.

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ISBN 13 :
Total Pages : 2 pages
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Book Synopsis Discussion "Comparative Evaluation of Geotextile Pore Sizes Using Bubble Point Test and Image Analysis" by Aydilek, A. H., D'Hondt, D., and Holtz, R.D. by : David J. Elton

Download or read book Discussion "Comparative Evaluation of Geotextile Pore Sizes Using Bubble Point Test and Image Analysis" by Aydilek, A. H., D'Hondt, D., and Holtz, R.D. written by David J. Elton and published by . This book was released on 2008 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Membrane Characterization

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Publisher : Elsevier
ISBN 13 : 0444637915
Total Pages : 460 pages
Book Rating : 4.4/5 (446 download)

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Book Synopsis Membrane Characterization by : Nidal Hilal

Download or read book Membrane Characterization written by Nidal Hilal and published by Elsevier. This book was released on 2017-02-18 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Membrane Characterization provides a valuable source of information on how membranes are characterized, an extremely limited field that is confined to only brief descriptions in various technical papers available online. For the first time, readers will be able to understand the importance of membrane characterization, the techniques required, and the fundamental theory behind them. This book focuses on characterization techniques that are normally used for membranes prepared from polymeric, ceramic, and composite materials. - Features specific details on many membrane characterization techniques for various membrane materials of industrial and academic interest - Contains examples of international best practice techniques for the evaluation of several membrane parameters, including pore size, charge, and fouling - Discusses various membrane models more suitable to a specific application - Provides examples of ab initio calculations for the design, optimization, and scale-up of processes based on characterization data

Evaluation of Woven Geotextile Pore Structure Parameters Using Image Analysis

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Total Pages : 12 pages
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Book Synopsis Evaluation of Woven Geotextile Pore Structure Parameters Using Image Analysis by : AH. Aydilek

Download or read book Evaluation of Woven Geotextile Pore Structure Parameters Using Image Analysis written by AH. Aydilek and published by . This book was released on 2004 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filtration performance of woven geotextiles is strongly related to their pore structure parameters, i.e., percent open area (POA) and pore-opening size distribution (PSD). Current methods of determination of pore structure parameters contain inherent disadvantages, whereas image analysis, taking advantage of the two-dimensional structure of woven geotextiles, can be used effectively for this purpose. Two new image-based PSD determination methods and a new image-based POA determination method were developed specifically for woven geotextiles and are presented in this paper. The POAs and two characteristic pore-opening sizes, O95 and O50, of various woven geotextiles were determined using the information provided by the image analysis methods. The image-based POAs and O95 pore-opening size of various geotextiles are comparable to those obtained from the physical measurements and the values reported by the manufacturers. On the other hand, the measured O50 pore-opening size is higher than the one determined using the analytical equations developed by two previous researchers.

Geotextiles

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Publisher : Woodhead Publishing
ISBN 13 : 0081002343
Total Pages : 644 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Geotextiles by : Robert Koerner

Download or read book Geotextiles written by Robert Koerner and published by Woodhead Publishing. This book was released on 2016-02-11 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geotextiles: From Design to Applications presents valuable information on the high performance fabrics used in soil separation, drainage, filtration, reinforcement, and cushioning. These polymeric materials offer solutions for geoengineering and other civil engineering specialties due to their advanced physical, mechanical, hydraulic, and endurance properties. This important book offers comprehensive coverage of the manufacture, functions, properties, designs, and applications of geotextiles. Part One begins with a chapter on the history of geotextiles, followed by chapters giving detailed reviews of the types of fabrics and their manufacturing processes, from resin type, to fiber extrusion, to textile fabrication. Part Two covers the properties, behavior, and testing of geotextiles, with Part Three focusing on applications dealing with the specific primary functions of geotextiles. In Part Four, chapters offer numerous general applications of geotextiles, including those in waste containment, marine engineering, walls/slopes, agriculture, and erosion control. Finally, the chapters of Part Five address quality control and assurance for geotextiles, and the increasingly important topic of sustainability. - Reviews the types of fabrics used for geotextiles and their manufacturing processes - Covers the properties, behavior, and testing of geotextiles - Contains detailed discussions of the primary functions of geotextiles and their wide range of applications

Evaluating Geotextile Pore Structure

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ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Evaluating Geotextile Pore Structure by : BR. Christopher

Download or read book Evaluating Geotextile Pore Structure written by BR. Christopher and published by . This book was released on 1996 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are many test methods available to determine the pore sizes of geotextile filters. Often overlooked is the fact that each method provides a different interpretation of a geotextile's pore structure. A survey of the available test methods, indicates that four categories of pores can be measured. Pore characteristics are identified by one of the following methodologies: sieving, theoretical, volumetric, and numerical. A critical review of the data produced by these methods shows that the actual pore structure as related to flow-through behavior can only be determined by the bubble point method, which provides a volumetric pore size. This test identifies the constriction size of each pore channel in a geotextile, where retention and clogging are most critical. The bubble point test method is advantageous because it provides for the complete pore size distribution of the geotextile, can be performed more efficiently than sieving methods, and provides an accurate estimate of the permeability of the geotextile.

Recent Developments in Geotextile Filters and Prefabricated Drainage Geocomposites

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Publisher : ASTM International
ISBN 13 : 0803120478
Total Pages : 241 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Recent Developments in Geotextile Filters and Prefabricated Drainage Geocomposites by : Shobha Krishna Bhatia

Download or read book Recent Developments in Geotextile Filters and Prefabricated Drainage Geocomposites written by Shobha Krishna Bhatia and published by ASTM International. This book was released on 1996 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information on woven and non-woven geotextiles used for filtering and drainage in geotechnical engineering. The design of such filters balances large pores for adequate permeability with smaller pores for proper soil retention. Of the 15 papers from a June 1995 symposium in Denver, Colorado

Comparisons Between Geotextile Pore Sizes Obtained from Capillary Flow And Dry Sieving Tests

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ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Comparisons Between Geotextile Pore Sizes Obtained from Capillary Flow And Dry Sieving Tests by : Nuzhath Fatema

Download or read book Comparisons Between Geotextile Pore Sizes Obtained from Capillary Flow And Dry Sieving Tests written by Nuzhath Fatema and published by . This book was released on 2020 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the United States of America, two standard methods of measuring the largest pore size of a geotextile have been accepted: Dry Sieving Test (ASTM D4751, Standard Test Methods for Determining Apparent Opening Size of a Geotextile ) and Capillary Flow Test (ASTM D6767, Standard Test Method for Pore Size Characteristics of Geotextiles by Capillary Flow Test ). Despite several drawbacks of Dry Sieving Tests, such as the amount of time required; tendency of glass beads to become trapped, including trapping of glass beads inside the geotextiles; likelihood of imprecise preparation of glass beads; and potential electrostatic effects, the largest pore size (apparent opening size [AOS], O 95 ) results obtained from Dry Sieving Test still determines many filtration criteria. Although the Capillary Flow Test was approved in 2002, it is still not widely adopted, despite the fact that it provides the largest pore size (Bubble Point, O 98 ) and a complete pore size distribution of a geotextile. Decades of analyses searched for a correlation between the Dry Sieving and Capillary Flow Test results; however, none of them have been widely accepted because of the limited number of geotextiles used and a lack of proper calibration. The current study investigates a possible correlation between the Dry Sieving and Capillary Flow Test results with 51 woven, nonwoven, and composite geotextiles. The Capillary Flow Porometer was calibrated using four thin metal plates with known pore openings and two membranes. This study describes the challenges experienced during the Capillary Flow Test and factors affecting the test results. One finding is that the cleaning of calibration materials and equipment with Methanol plays an important role in the Capillary Flow Test results. The use of different shape factors, contact angles, and wetting liquids in the analyses are also considered. The outliers of Capillary Flow Test results were removed from the analysis using a box plot and whisker diagram, and a good correlation between AOS and Bubble Point ( R 2 =0.78) was established.

Application of the Bubble Point Method to the Characterization of the Pore-Size Distribution of Geotextiles

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Total Pages : 12 pages
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Book Synopsis Application of the Bubble Point Method to the Characterization of the Pore-Size Distribution of Geotextiles by : SK. Bhatia

Download or read book Application of the Bubble Point Method to the Characterization of the Pore-Size Distribution of Geotextiles written by SK. Bhatia and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the design of a geotextile as a filter, reliable information about the pore-size distribution of the geotextile is needed. The bubble point method is one technique that is able to provide this information for a geotextile. The bubble point method is a simple and rapid technique for evaluating pore-size distributions of virgin, clogged, and stretched geotextiles. In addition, the bubble point equipment is also capable of providing information as to the degree of clogging within a geotextile and the permeability of a geotextile. The geotextile pore-size distribution results obtained by the bubble point method showed good repeatability. However, the bubble point method was only able to distinguish between geotextiles that had significantly different cross sections. Pore-size distribution results for geotextiles with similar cross sections, but of increasing thickness, were very similar. The dry sieving (ASTM D 4751), hydrodynamic sieving (CAN/CGSB-148.1-10), AND WET SIEVING (sw-640550-83) METHODS ARE GENERALLY only useful for evaluating the larger pore openings (O95, O90) of the geotextiles. In addition, the methods are time consuming. The mercury intrusion porosimetry method (ASTM D 4404) was also performed; however, there was little difference in pore-size distribution results for any of the 28 different geotextiles tested (Smith 1993). There are also environmental concerns with using mercury. The bubble point method showed potential for characterizing the pore-size distribution of geotextiles.

Fundamentals of Geosynthetic Engineering

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Publisher : CRC Press
ISBN 13 : 0203968263
Total Pages : 428 pages
Book Rating : 4.2/5 (39 download)

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Book Synopsis Fundamentals of Geosynthetic Engineering by : Sanjay Kumar Shukla

Download or read book Fundamentals of Geosynthetic Engineering written by Sanjay Kumar Shukla and published by CRC Press. This book was released on 2006-09-12 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of polymeric materials in the form of geosynthetics has brought major changes to the area of Civil Engineering. Increasing interest in these materials and their use has resulted in significant advances in their practical applications in the last few decades. Following this progress, geosynthetics have become a common and favoured construction component in present-day geotechnical engineering. A wide range of compositions is now used, with properties tailored to conditions required for application. Fundamentals of Geosynthetic Engineering provides an overview of the basic concepts of this fascinating and innovative subject area in a logical and illustrative way. This book guides the reader from basic description, manufacturing and material properties of the geosynthetics to their selection process and the major applications. It treats practical analysis and design concepts and provides guidelines for application. In addition, the quality control, field performance and monitoring of applied geosynthetics are discussed, and some aspects of costs analysis are described. The text is supported by examples, multiple choice and numerical questions with answers provided. One separate chapter with case studies is included in the book. In addition, the latest common test standards and codes of practice are introduced in a few sections with extensive references. This textbook will serve courses in geosynthetics or earth reinforcement for graduate students in Geotechnical, Transportation, Hydraulic or Environmental Engineering. It may also be used as part of the undergraduate Geotechnical Engineering course for final year undergraduate students in Civil Engineering. The structure of this text also facilitates self-study by civil engineers, manufacturers and installers who wish to become familiar with the subject matter.

Proceedings of the Fifth International Conference on Geotextiles, Geomembranes, and Related Products, Singapore, 5-9 September 1994

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ISBN 13 :
Total Pages : 396 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Proceedings of the Fifth International Conference on Geotextiles, Geomembranes, and Related Products, Singapore, 5-9 September 1994 by : G. P. Karunaratne

Download or read book Proceedings of the Fifth International Conference on Geotextiles, Geomembranes, and Related Products, Singapore, 5-9 September 1994 written by G. P. Karunaratne and published by . This book was released on 1994 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Nonwovens

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Publisher : Woodhead Publishing
ISBN 13 : 0128189134
Total Pages : 650 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Handbook of Nonwovens by : S. J. Russell

Download or read book Handbook of Nonwovens written by S. J. Russell and published by Woodhead Publishing. This book was released on 2022-05-31 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Nonwovens, Second Edition updates and expands its popular interdisciplinary treatment of the properties, processing, and applications of nonwovens. Initial chapters review the development of the industry and the different classes of nonwoven material. The book then discusses methods of manufacture such as dry-laid, wet-laid, and polymer-laid web formation. Other techniques analyzed include mechanical, thermal, and chemical bonding, as well as chemical and mechanical finishing systems. The book concludes by assessing the characterization, testing, and modeling of nonwoven materials.Covering an unmatched range of materials with a variety of compositions and manufacturing routes, this remains the indispensable reference to nonwovens for designers, engineers, materials scientists, and researchers, particularly those interested in the manufacturing of automotive, aerospace, and medical products. Nonwovens are a unique class of textile material formed from fibers that are bonded together through various means to form a coherent structure. The range of properties they can embody make them an important part of a range of innovative products and solutions, which continues to attract interest from industry as well as academia. - Describes in detail the manufacturing processes of a range of nonwoven materials - Provides detailed coverage of the mechanical and thermal properties of non-woven fabrics - Includes extensive updates throughout on the characterization and testing of nonwovens - Explains how to model nonwoven structures

Geosynthetics

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Publisher : iSmithers Rapra Publishing
ISBN 13 : 9781859573754
Total Pages : 134 pages
Book Rating : 4.5/5 (737 download)

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Book Synopsis Geosynthetics by : David I. Cook

Download or read book Geosynthetics written by David I. Cook and published by iSmithers Rapra Publishing. This book was released on 2003 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geosynthetics often play critical roles in civil engineering and it is important that the materials in use can withstand the physical and chemical pressures of the environment. These range from resistance to leachates from landfill to resistance to root damage in soil liners, as well as standard properties such as resistance to creep, oxidation and UV light, and tensile strength. This Rapra Review Report discusses the polymers used in each category of geosynthetics, production methods, test methods and applications. The review is accompanied by around 400 abstracts from papers and books in the Rapra Polymer Library database, to facilitate further reading on this subject.

Analysis of the Bubblepoint Test for Determining the Pore Size Distribution of Geotexiles

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ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.:/5 (717 download)

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Book Synopsis Analysis of the Bubblepoint Test for Determining the Pore Size Distribution of Geotexiles by : David L. Howie

Download or read book Analysis of the Bubblepoint Test for Determining the Pore Size Distribution of Geotexiles written by David L. Howie and published by . This book was released on 2002 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bubblepoint Testing of Geotextiles

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ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Bubblepoint Testing of Geotextiles by : DJ. Elton

Download or read book Bubblepoint Testing of Geotextiles written by DJ. Elton and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simple, inexpensive device for measuring geotextile pore sizes, using ASTM D 6767, is described and its operation is outlined with guidance for correct operation. The accuracy and consistency of the test are shown. The test appears to have better consistency than the apparent opening size (AOS) test, avoids the inherent and operator-dependent problems of theAOS test, and further, describes the entire pore size distribution of a geotextile, making it useful for developing a more complete filter criterion. Suggestions are made for improving ASTM D 6767.

Géotechnique

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ISBN 13 :
Total Pages : 428 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Géotechnique by :

Download or read book Géotechnique written by and published by . This book was released on 2002 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

ASTM Special Technical Publication

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ISBN 13 :
Total Pages : 254 pages
Book Rating : 4.3/5 (126 download)

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Book Synopsis ASTM Special Technical Publication by :

Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1961 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: