1-20 of 170
Keywords: permeability
Close
Sort by
eBook Chapter
... Gas permeability describes the rate at which gases can pass through a material under pressure-driven flow. It is a property of interest for graphite components within gas-cooled reactors, indicating the level of permeation of cooling gases within the components and hence the rate of reaction...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7647-8
... Permeability is a normalized term that is calculated based on vapor flow, vapor drive, and saturation pressures. However, it does not take into account the total volume of water vapor that is actually transmitting across a wall assembly at a given temperature and relative humidity. It also does...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2013
ISBN: 978-0-8031-7548-8
... permeation permeability Current and Future Practices for the Testing of Multi-Component Geosynthetic Clay Liners STP 1562, 2013 Available online at www.astm.org DOI:10.1520/STP156220120097 T. A. Egloffstein,1 J. Kalsow,2 K. P. von Maubeuge,3 and H. Ehrenberg4 Multi-Component Geosynthetic Clay Liners...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2013
ISBN: 978-0-8031-7548-8
.... water-vapor transmission diffusion multi-component GCLs geomembranes permeability S. Allen1 Current and Future Practices for the Testing of Multi-Component Geosynthetic Clay Liners STP 1562, 2013 Available online at www.astm.org DOI:10.1520/STP156220120103 Water-Vapor Diffusion Through Polymeric...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2013
ISBN: 978-0-8031-7548-8
... the CaCO 3 content of the various bentonites, long-term permeability tests were conducted on the same GCL specimens to illustrate this possibility. gcl lab test flux permeability durability George R. Koerner1 Current and Future Practices for the Testing of Multi-Component Geosynthetic Clay...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7537-2
... properties of pervious concrete (permeability, mechanical resistance, and porosity) through 3D images obtained by micro-tomography. Through an original experimental program, we attempt to determine the permeability of different pervious concretes directly from microstructural parameters extracted from 3D...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2012
ISBN: 978-0-8031-7537-2
... for situations in which a clogged placement is encountered. pervious concrete infiltration rate permeability porosity Heather J. Brown1 and Alan Sparkman2 Pervious Concrete STP 1551, 2012 Available online at www.astm.org DOI:10.1520/STP20120019 The Development, Implementation, and Use of ASTM C1701...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-3419-5
... The present research is aimed at investigating effects of concrete properties, particularly concrete rapid chloride permeability, strength, and air void parameters, on freezing-thawing (FT) resistance. In this study, concrete mixtures are made with different types of cement (Types I with 15...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-7504-4
... increased substantially. In order to achieve the lowest total net transport of contaminants through the material, S/S recipes for environmental projects should not only be optimized with regard to physical strength, but also with regard to leaching and permeability. Stabilization/solidification...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2007
ISBN-10: 0-8031-3422-3
ISBN: 978-0-8031-3422-5
... the results obtained from the cup methods. This paper presents the results obtained from the laboratory tests carried out on more than 50 building materials. These results have been used to demonstrate the significance of various corrections on the measured water vapor permeability or permeance of various...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2004
ISBN-10: 0-8031-3481-9
ISBN: 978-0-8031-3481-2
... in the strength of Mixture S-2 at late ages. The respective water permeability values of Mixtures S-2 and S-3 decreased from 68 and 33 μm/s at 63 d to 6 and 12 μm/s at 227 d due to the improvement of microstructure of these CLSM mixtures. bleedwater Class C fly ash compressive strength flowable slurry...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-3452-5
ISBN: 978-0-8031-3452-2
.... To estimate these parameters certain methods are examined for measuring the hydraulic properties where the soil permeability is low and, where possible, the results are compared with measured data. Unsaturated hydraulic conductivity (UHC), unlike saturated hydraulic conductivity (SHC), is difficult to obtain...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2002
ISBN-10: 0-8031-3452-5
ISBN: 978-0-8031-3452-2
... cavity, both values being 50 times lower than the k -value derived from the usual superposition method. permeability field borehole pulse test piezometric level Robert P. Chapuis 1and David Cazaux 2 Pressure-Pulse Test for Field Hydraulic Conductivity of Soils: Is the Common Interpretation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2000
ISBN-10: 0-8031-2855-X
ISBN: 978-0-8031-2855-2
... and in Rowe cell with measurement of pore pressure, adopting different load increment ratio and load permanence, were performed. The compression characteristics (C c , C α ) and the difficulties involved in reliably determining the end of primary consolidation and evaluating the permeability were investigated...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2000
ISBN-10: 0-8031-2855-X
ISBN: 978-0-8031-2855-2
... shallow aquifers is to construct cut-off walls using hydraulically placed slimes from sand mining (fines washed from the sand). This involves placing wet sand washing slimes mixed with clean fill to achieve a low permeability slurry curtain around the landfill walls. Another alternative successfully used...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2000
ISBN-10: 0-8031-2859-2
ISBN: 978-0-8031-2859-0
... This research was conducted to study the changes in permeability of a sand/bentonite liner made under standard compaction conditions and permeated with solutions containing the heavy metals Pb +2 , Zn +2 and/or Cr +3 . The fine particle size distribution and the free swelling capacity...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1999
ISBN-10: 0-8031-2622-0
ISBN: 978-0-8031-2622-0
..., the need for adjuvants to promote uptake, and the structure of the plant cuticle. diffusion coefficient foliar uptake partition coefficient permeability J. D. Fowler l A Discussion of the Dependence of Cuticular Mobility on Molecular Volume Reference: Fowler, J. D., "A Discussion...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1999
ISBN-10: 0-8031-2607-7
ISBN: 978-0-8031-2607-7
... understanding of realistic water testing of masonry structures and a more accurate determination of a building's performance with regard to water penetration using the water chamber test method will be available. interior leakage masonry permeability water penetration water permeance water testing...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1999
ISBN-10: 0-8031-2604-2
ISBN: 978-0-8031-2604-6
... Frost penetration is a major environmental concern in landfill design. Freezing and thawing cycles may deteriorate the permeability of the liner or cap. In this study, the depth of frost penetration into a landfill cover that uses paper sludge as the impermeable barrier (the Hubbardston landfill...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1998
ISBN-10: 0-8031-2477-5
ISBN: 978-0-8031-2477-6
... on the hardened CLSM. Many initial CLSM mixtures were developed by blending the two types of ash. Tests conducted on the final three selected CLSM mixtures included compressive strength, bleeding, setting and hardening, settlement, length change of hardened CLSM, permeability, mineralogy, and chemical water...