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Influence Of Geotextile Structure On Pore Size Determination
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Book Synopsis Influence of Geotextile Structure on Pore Size Determination by : JM. Rigo
Download or read book Influence of Geotextile Structure on Pore Size Determination written by JM. Rigo and published by . This book was released on 1990 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filtration performance of a geotextile is related to its capacity to retain soil particles over time without clogging. A pore size determination such as the filtration opening size (FOS) is used to assess the geotextile's filtration behavior. Standard hydrodynamic methods use a soil with a uniformity coefficient (Cu) greater than 6, with the coarser particle size value at least twice the estimated FOS value, and with a d10 four times smaller than the FOS value. The filtration opening size determination, using such a soil, is greatly influenced by the size of the coarser particles and by their fraction. Pore size has been overestimated because of these factors and because of the curve continuity. The soil nature of the gradation curve and the quantity of soil used in the test may distort pore size determination, hide some phenomena, and lead to errors in interpretation.
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
Book Synopsis The Influence of Fabric Pore Structure on the Behavior of Geotextile Filters by : Gregory Robert Fischer
Download or read book The Influence of Fabric Pore Structure on the Behavior of Geotextile Filters written by Gregory Robert Fischer and published by . This book was released on 1994 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geosynthetics written by Ian D. Peggs and published by ASTM International. This book was released on 1990 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thirteen papers from the ASTM Symposium on Microstructure and Performance of Geosynthetics, held in Orlando, Florida, January 1989, on the effects of structural parameters of fibers, geotextiles, and geomembranes on the short and long term performance of finished geosynthetic products. Price to memb
Book Synopsis Determination and Comparisons of the Pore Structure of Nonwoven Geotextiles by : AM. Elsharief
Download or read book Determination and Comparisons of the Pore Structure of Nonwoven Geotextiles written by AM. Elsharief and published by . This book was released on 1996 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microstructural properties of 14 nonwoven geotextiles obtained from 4 manufacturers were measured using mercury intrusion porosimetry (MIP) and image analysis. Different testing techniques were attempted and evaluated for the two methods. The controlled volume MIP option was found to suit geotextiles more than the pressure table option. For image analysis a one dimensional model was used to measure the pore size distribution from enlarged photographic prints of thin sections. The results from the two methods indicated similar pore size distribution for geotextiles from the same manufacturer with thickness being the major difference. However, significant differences in porosity and specific surface area between different geotextile manufacturers were obtained. The O95values obtained from image analysis and MIP were found to be much higher than the apparent opening size (AOS) and the filtration opening size (FOS) for the same geotextile.
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 1990 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geotextiles written by Amit Rawal and published by CRC Press. This book was released on 2010-10-06 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The monograph critically reviews most commonly used geotextile structures, their properties and performance characteristics. In general, both natural and synthetic fibres are used for the production of geotextiles, and the advantages and disadvantages of each type of fibre are discussed for various applications of geotextiles. The important functio
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.
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.
Book Synopsis Geosynthetic Testing for Waste Containment Applications by : Robert M. Koerner
Download or read book Geosynthetic Testing for Waste Containment Applications written by Robert M. Koerner and published by ASTM International. This book was released on 1990 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains papers presented at the symposium of the same name held in Las Vegas, January 1990. Examines the selection, testing, design, and use of geosynthetics. Topics include chemical resistance of geomembranes, test methods and procedures to evaluate geomembranes, and performance behavior of geosyn
Book Synopsis Geotextiles and Geomembranes Handbook by : T.S. Ingold
Download or read book Geotextiles and Geomembranes Handbook written by T.S. Ingold and published by Elsevier. This book was released on 2013-10-22 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential introductory reference manual for anyone specifying, maintaining or manufacturing geotextiles and geomembranes.
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.
Download or read book Geotechnical Testing Journal written by and published by . This book was released on 1994 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Book Synopsis Geosynthetics and Geosystems in Hydraulic and Coastal Engineering by : Krystian Pilarczyk
Download or read book Geosynthetics and Geosystems in Hydraulic and Coastal Engineering written by Krystian Pilarczyk and published by CRC Press. This book was released on 2000-01-01 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review of the existing applications of geosynthetics and geosystems in hydraulic and coastal engineering, with an overview on material specifications, structural components, relevant tools during conceptual and detail design, possible applications, and execution aspects. A more detailed description is given of new or lesser-known systems and applications. Additional basic information on design methodology and geosynthetics is included to provide a basic framework of information for design purposes.
Book Synopsis Advances in Civil Engineering: Structural Seismic Resistance, Monitoring and Detection by : Mohd Johari Mohd Yusof
Download or read book Advances in Civil Engineering: Structural Seismic Resistance, Monitoring and Detection written by Mohd Johari Mohd Yusof and published by CRC Press. This book was released on 2022-10-21 with total page 787 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Civil Engineering: Structural Seismic Resistance, Monitoring and Detection is a collection of papers resulting from the conference on Structural Seismic Resistance, Monitoring and Detection (SSRMD 2022), Harbin, China, 21–23 January, 2022. According to the development of many new seismic theories, technologies and products, the primary goal of this conference is to promote research and developmental activities in structural seismic resistance, monitoring and detection. Moreover, another goal is to promote scientific information interchange between scholars from the top universities, business associations, research centers and high-tech enterprises working all around the world. The conference conducted in-depth exchanges and discussions on relevant topics such as structural seismic resistance, monitoring and detection, aiming to provide an academic and technical communication platform for scholars and engineers engaged in scientific research and engineering practice in the field of civil engineering, seismic resistance and engineering entity structure testing. By sharing the research status of scientific research achievements and cutting-edge technologies, it helps scholars and engineers all over the world to comprehend the academic development trend and broaden research ideas. So as to strengthen international academic research, academic topics exchange and discussion, and promoting the industrialization cooperation of academic achievements.
Download or read book The Indian Textile Journal written by and published by . This book was released on 1999 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
