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1

Tan, S. A. "A Simple Automatic Falling Head Permeameter." Soils and Foundations 29, no. 1 (1989): 161–64. http://dx.doi.org/10.3208/sandf1972.29.161.

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2

Philip, J. R. "Approximate analysis of falling-head lined borehole permeameter." Water Resources Research 29, no. 11 (1993): 3763–68. http://dx.doi.org/10.1029/93wr01688.

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3

Malama, Bwalya, and André Revil. "Modeling Transient Streaming Potentials in Falling-Head Permeameter Tests." Groundwater 52, no. 4 (2013): 535–49. http://dx.doi.org/10.1111/gwat.12081.

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4

LEE, D. M., D. E. ELRICK, W. D. REYNOLDS, and B. E. CLOTHIER. "A COMPARISON OF THREE FIELD METHODS FOR MEASURING SATURATED HYDRAULIC CONDUCTIVITY." Canadian Journal of Soil Science 65, no. 3 (1985): 563–73. http://dx.doi.org/10.4141/cjss85-060.

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The saturated hydraulic conductivity, Ks, was measured on a loamy sand, a fine sandy loam, a silt loam and a clay at four 100-m2-area sites in southern Ontario. Twenty measurements of Ks were obtained by each of three different measurement techniques at each of the four sites. The techniques included: (1) the air-entry permeameter method; (2) the constant head well permeameter method using the Guelph Permeameter; and (3) the falling-head permeameter method applied to small soil cores. The Ks data were found to be better described by the log-normal frequency distribution than by the normal freq
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5

BUCKLAND, G. D., D. B. HARKER, and T. G. SOMMERFELDT. "COMPARISON OF METHODS FOR DETERMINING SATURATED HYDRAULIC CONDUCTIVITY AND DRAINABLE POROSITY OF TWO SOUTHERN ALBERTA SOILS." Canadian Journal of Soil Science 66, no. 2 (1986): 249–59. http://dx.doi.org/10.4141/cjss86-027.

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Saturated hydraulic conductivity (Ks) and drainable porosity (f) determined by different methods and for different depths were compared with those determined from the performance of drainage systems installed at two locations. These comparisons were made to determine which methods are suitable for use in subsurface drainage design. Auger hole and constant-head well permeameter Ks were 140 and 110%, respectively, of Ks determined from subsurface drains. Agreement of horizontal or vertical Ks, from in situ falling-head permeameters; to other methods was satisfactory providing sample numbers were
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6

Hernandez-Saenz, Maria A., Edith Arámbula-Mercado, and Amy Epps Martin. "Evaluation of Functionality in Porous Friction Courses." Transportation Research Record: Journal of the Transportation Research Board 2633, no. 1 (2017): 25–36. http://dx.doi.org/10.3141/2633-05.

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Porous friction courses (PFCs) are employed as surface layers primarily because of their functionality (i.e., their high permeability and noise absorption capability). In this study, the functionality of PFCs was evaluated through permeability and noise absorption tests in pavement structures of different thicknesses (i.e., 0.75, 1.5, and 2.5 in.), each at two air void contents (i.e., design and construction). Permeability was evaluated in the laboratory and the field with the Texas Department of Transportation (DOT) permeameter, the National Center of Asphalt Technology (NCAT) permeameter, an
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7

Sadasivan, Chander, Erica Swartwout, Ari D. Kappel, Henry H. Woo, David J. Fiorella, and Barry B. Lieber. "In vitro measurement of the permeability of endovascular coils deployed in cerebral aneurysms." Journal of NeuroInterventional Surgery 10, no. 9 (2018): 896–900. http://dx.doi.org/10.1136/neurintsurg-2017-013481.

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Background and purposeAneurysm recurrence is the primary limitation of endovascular coiling treatment for cerebral aneurysms. Coiling is currently quantified by a volumetric porosity measure called packing density (pd). Blood flow through a coil mass depends on the permeability of the coil mass, and not just its pd. The permeability of coil masses has not yet been quantified. Here we measure coil permeability with a traditional falling-head permeameter modified to incorporate idealized aneurysms.MethodsSilicone replicas of idealized aneurysms were manufactured with three different aneurysm dia
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8

Taylor, Andrew R., Sébastien Lamontagne, and Russell S. Crosbie. "Measurements of riverbed hydraulic conductivity in a semi-arid lowland river system (Murray–Darling Basin, Australia)." Soil Research 51, no. 5 (2013): 363. http://dx.doi.org/10.1071/sr13090.

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Riverbed hydraulic conductivity (Kr) was measured along one river reach in four tributaries of the Murray–Darling Basin (MDB) in south-eastern Australia. Two techniques were trialled: in-river falling-head tests in high Kr sediments, and laboratory evaporation tests on intact riverbed cores for low Kr sediments. In-river falling-head tests were conducted using two types of permeameter: a steel-base permeameter or a stand-pipe permeameter. Kr was found to range from 10–10 to 10–3 m s–1, corresponding to a range in riverbed sediment textures from clay to silty gravels, respectively. Although the
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9

Reynolds, W. D. "Measuring Soil Hydraulic Properties Using a Cased Borehole Permeameter: Falling-Head Analysis." Vadose Zone Journal 10, no. 3 (2011): 999–1015. http://dx.doi.org/10.2136/vzj2010.0145.

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10

Wise, William R., and Raleigh D. Myers. "MODIFIED FALLING HEAD PERMEAMETER ANALYSES OF SOILS FROM TWO SOUTH FLORIDA WETLANDS." Journal of the American Water Resources Association 38, no. 1 (2002): 111–17. http://dx.doi.org/10.1111/j.1752-1688.2002.tb01539.x.

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11

Zhang, Yi, Hui Li, Ahmed Abdelhady, and Jie Yang. "Comparative laboratory measurement of pervious concrete permeability using constant-head and falling-head permeameter methods." Construction and Building Materials 263 (December 2020): 120614. http://dx.doi.org/10.1016/j.conbuildmat.2020.120614.

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12

Villani, Chiara, Kenneth A. Snyder, and W. Jason Weiss. "Evaluating the Intrinsic Permeability of Cementitious Materials Using a Falling-Head Gas Permeameter." Advances in Civil Engineering Materials 4, no. 1 (2015): 20150021. http://dx.doi.org/10.1520/acem20150021.

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13

Wilson, M. A., W. D. Hoff, R. J. E. Brown, and M. A. Carter. "A falling head permeameter for the measurement of the hydraulic conductivity of granular solids." Review of Scientific Instruments 71, no. 10 (2000): 3942. http://dx.doi.org/10.1063/1.1310349.

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14

Al-Shukaili, A., A. Al-Mayahi, A. Al-Maktoumi, and A. R. Kacimov. "Unlined trench as a falling head permeameter: Analytic and HYDRUS2D modeling versus sandbox experiment." Journal of Hydrology 583 (April 2020): 124568. http://dx.doi.org/10.1016/j.jhydrol.2020.124568.

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15

Johnson, D. O., F. J. Arriaga, and Birl Lowery. "AUTOMATION OF A FALLING HEAD PERMEAMETER FOR RAPID DETERMINATION OF HYDRAULIC CONDUCTIVITY OF MULTIPLE SAMPLES." Soil Science Society of America Journal 69, no. 3 (2005): 828–33. http://dx.doi.org/10.2136/sssaj2004.0014n.

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16

Morin, Pierre. "Amélioration des mesures des propriétés de consolidation au laboratoire à l'aide du montage perméamétrique." Canadian Geotechnical Journal 28, no. 1 (1991): 127–33. http://dx.doi.org/10.1139/t91-013.

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The readings of the settlement of a sample during a standard oedometer step loading test provide the values of the parameters of compressibility and indirectly of the permeability. The present article shows how a very simple permeability device available in most laboratories can be used to determine the modulus, the permeability, and the consolidation properties of the soils. The described procedure shortens the duration of the test and prevents the interruption of the loading required to carry out the traditional permeability tests. Four experimental examples allow the assessment of the merit
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17

Lei, G. H., F. X. Liu, and S. W. Xia. "A note on falling-head and rising-tail permeability tests on saturated soils in centrifuge." Canadian Geotechnical Journal 57, no. 8 (2020): 1232–38. http://dx.doi.org/10.1139/cgj-2019-0222.

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The falling-head and rising-tail method for permeability test allows for both inflow and outflow rates to be conveniently measured. This helps to detect any possible swelling or consolidation of specimen during testing and to identify the continuity of flow of water through the specimen. It has been widely adopted to measure the hydraulic conductivity of saturated porous media of extremely low permeability, such as hydraulic barrier soil materials. Centrifuge permeameter test with this method has recently been devised to accelerate water flow and reduce the time needed for testing. The accompa
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18

Arifin, Muhammad Amad, and Fathurrozie Fathurrozie. "Tinjauan Nilai Permeabilitas Tanah Tanggul Canal Blocking." Jurnal Gradasi Teknik Sipil 3, no. 1 (2019): 7–14. http://dx.doi.org/10.31961/gradasi.v3i1.732.

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Air sangat berpengaruh pada sifat-sifat teknis tanah dan juga air berperan sangat penting dalam masalah-masalah teknis yang berhubungan dengan tanah yaitu permeabilitas. Permeabilitas tanah yaitu kecepatan air yang menembus tanah pada periode tertentu dan dinyatakan dalam cm/jam. Nilai permeabilitas sangat penting dalam menentukan penggunaan dan pengelolaan praktis tanah. Koefisien permeabilitas tanah memiliki nilai yang berbeda untuk berbagai jenis tanah. Ada dua macam alat untuk menentukan nilai permeabilitas, yaitu constant head permeameter dan falling head permeameter.
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19

Chen, Lu-Ming, Jui-Wen Chen, Ting-Hao Chen, Timothy Lecher, and Paul Davidson. "Measurement of Permeability and Comparison of Pavements." Water 11, no. 3 (2019): 444. http://dx.doi.org/10.3390/w11030444.

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Permeable pavements have the ability to reduce surface runoff by allowing water to infiltrate into the underlying soil. The potential of permeable pavements to assist in managing stormwater and improve water quality has gained attention as an option, other than conventional impermeable concrete for paving purposes. This study examined the permeability of three different pavement systems, including the JW Eco-technology pavement (JW), which has not previously been installed or studied in the U.S., standard impermeable concrete (IC), and pervious concrete (PC). Each pavement type was installed i
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20

Lafleur, J., F. Giroux, and M. Huot. "Field permeability of the weathered Champlain clay crust." Canadian Geotechnical Journal 24, no. 4 (1987): 581–89. http://dx.doi.org/10.1139/t87-072.

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This paper discusses methods for evaluating the coefficient of permeability k of the weathered and fissured Champlain clay crust. This parameter is important because losses due to seepage from fluid-retaining structures are directly porportional to the value of k. The presence of fissures complicates its evaluation, and conventional techniques produce questionable results for two reasons: Clogging of fissures by the smearing of the clay on the walls of test holes during drilling and insertion of a probe leads to an underestimation of k, and conversely, hydraulic fracturing caused by the applic
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21

Khan, Tanveer Ahmed, Khalid Farooq, Mirza Muhammad, et al. "The Effect of Fines on Hydraulic Conductivity of Lawrencepur, Chenab and Ravi Sand." Processes 7, no. 11 (2019): 796. http://dx.doi.org/10.3390/pr7110796.

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The amount of fines in sand greatly influence the permeability of sandy soils. Thus, this research was conducted to study the effect of plastic and non-plastic fines on the permeability of three types of sands (Lawrencepur sand, Chenab sand and Ravi sand). For this purpose, plastic and non-plastic fines were collected from different location of Lahore. Samples were prepared by mixing plastic and non-plastic fines into each type of sand separately, in amounts ranging from 0% to 50% with increments of five percent. Overall 63 samples were prepared. Sieve analysis and hydrometric analysis were pe
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22

Regalado, C. M., A. Ritter, J. Álvarez-Benedí, and R. Muñoz-Carpena. "Simplified Method to Estimate the Green-Ampt Wetting Front Suction and Soil Sorptivity with the Philip-Dunne Falling-Head Permeameter." Vadose Zone Journal 4, no. 2 (2005): 291–99. http://dx.doi.org/10.2136/vzj2004.0103.

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23

Mohammad, Louay N., Ananda Herath, and Baoshan Huang. "Evaluation of Permeability of Superpav® Asphalt Mixtures." Transportation Research Record: Journal of the Transportation Research Board 1832, no. 1 (2003): 50–58. http://dx.doi.org/10.3141/1832-07.

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The presence of water in a pavement system is detrimental to its life. Permeable asphalt concrete pavement structures are vulnerable to stripping, which causes premature damage under heavy traffic. To assess the permeability of asphalt mixtures, a research study was conducted at the Louisiana Transportation Research Center (LTRC). Laboratory permeability tests were performed on field cores taken from 17 Superpave® projects in Louisiana. An LTRC-modified version of Karol-Warner's falling-head permeameter was used to conduct the permeability test. A sensitivity analysis was performed to relate t
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24

Pedescoll, A., P. R. Knowles, P. Davies, J. García, and J. Puigagut. "A Comparison of In Situ Constant and Falling Head Permeameter Tests to Assess the Distribution of Clogging Within Horizontal Subsurface Flow Constructed Wetlands." Water, Air, & Soil Pollution 223, no. 5 (2011): 2263–75. http://dx.doi.org/10.1007/s11270-011-1021-4.

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25

Kang, Bo, Weihong Dong, Wei Xu, and Fengtian Yang. "Groundwater discharge downstream of an arid inland river in Northwestern China." Water Supply 17, no. 2 (2016): 519–25. http://dx.doi.org/10.2166/ws.2016.156.

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Nalenggele River is an inland river located in the arid, fragile ecological environment area in Northwestern China. Groundwater discharge to the river can significantly impact the ecologic environment in the Nalenggele River basin, but few hydrogeological studies have been conducted in the inland arid basin. In this paper, two sections were chosen to analyze the groundwater discharge in the downstream of Nalenggele River. Section I–I′ is located in the west of the downstream of this river, while section II–II′ is in the east. Two methods were used to calculate the discharge in section I–I′: Da
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26

Ige, Olusegun Omoniyi, Daniel Opemipo Obasaju, Christopher Baiyegunhi, Olufemi Ogunsanwo, and Temitope Love Baiyegunhi. "Evaluation of aquifer hydraulic characteristics using geoelectrical sounding, pumping and laboratory tests: A case study of Lokoja and Patti Formations, Southern Bida Basin, Nigeria." Open Geosciences 10, no. 1 (2018): 807–20. http://dx.doi.org/10.1515/geo-2018-0063.

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AbstractThe hydraulic characteristics of aquifers in Lokoja and Patti Formations were investigated using combination of vertical electrical sounding (VES), pumping and laboratory tests. A total of 20 VES (10 each in areas underlain by Lokoja and Patti Formations) were carried out at different locations with 5 pumping tests around VES stations in order to determine the geoelectric layers, thickness, depths to water table and groundwater potential of the area. 21 samples extracted fromaquiferous units of surface outcrops were also subjected to laboratory constant head and falling head permeamete
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27

Arnaud, Emmanuelle, Michael McGill, Andrew Trapp, and James E. Smith. "Subsurface heterogeneity in the geological and hydraulic properties of the hummocky Paris Moraine, Guelph, Ontario." Canadian Journal of Earth Sciences 55, no. 7 (2018): 768–85. http://dx.doi.org/10.1139/cjes-2016-0161.

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The advance and retreat of ice lobe margins of the Laurentide Ice Sheet formed moraines that are a prevalent feature throughout southwestern Ontario. In contrast to the well-studied stratified moraine complexes, recessional and end moraines have largely been ignored in the context of hydrogeological studies. Recent urban growth has led to development pressures on these moraines and a need to better understand their hydrogeology. This study presents data sets from the Paris Moraine near Guelph, Ontario, to examine its geomorphology, internal composition, and the corresponding hydraulic properti
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28

Cavdar, Sevgi, and Hongbin Zhan. "Storage Effect in Falling Head Permeameters." Journal of Hydrologic Engineering 23, no. 3 (2018): 04017064. http://dx.doi.org/10.1061/(asce)he.1943-5584.0001626.

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29

Amadi, Agapitus A., and K. J. Osinubi. "Assessment of Bentonite Influence on Hydraulic Conductivity of Lateritic Soil." International Journal of Engineering Research in Africa 3 (November 2010): 84–93. http://dx.doi.org/10.4028/www.scientific.net/jera.3.84.

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Lateritic soils are pedogenic surface deposits which occur in vast areas of tropical and subtropical regions of the world and find use as construction material in diverse civil engineering aspects. But, the predominance of kaolinitic 1:1 lattice clay mineral and coating of the clayey constituents with sesquioxides limits the ability of the soil from achieving very low hydraulic conductivity, (k) required for some geotechnical/geoenvironmental structures. The present study investigates the influence of low percent bentonite on the hydraulic conductivity of a residually derived lateritic soil. A
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30

Saparso, Tohari, Dja’far Shiddieq, and Bambang Setiadi. "Karakterisasi berbagai Jenis Bahan Lapisan Kedap, Ketebalan dan Nisbah Bentonit dengan Pasir: Konsep Dasar Pengelolaan Lahan Pasir Pantai." Journal of Tropical Soils 14, no. 2 (2013): 167–76. http://dx.doi.org/10.5400/jts.2009.v14i2.167-176.

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Coastal sandy land development faces the sand characteristics, the lower holding water capacity and the larger nutrient leaching due to heavier rainfall in the tropics, soil porosity and without soil layering so it need alternative technology for more efficient harvesting water resources in supporting the crop growing. The laboratory research studied the characteristic of various kind, thickness and ratio of hardplain material was carried out at Laboratory of Agronomy of UNSOED, Soil Mechanic of GMU. the SEM and X-RD of Lemigas Jakarta. Permeability determination by Falling Head which is appro
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31

COLLIS-GEORGE, N., and D. B. YATES. "THE EFFECTS OF ENCAPSULATED AIR ON FALLING HEAD PERMEAMETERS." Soil Science 143, no. 5 (1987): 318–28. http://dx.doi.org/10.1097/00010694-198705000-00002.

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32

Licciardello, F., R. Aiello, V. Alagna, M. Iovino, D. Ventura, and G. L. Cirelli. "Assessment of clogging in constructed wetlands by saturated hydraulic conductivity measurements." Water Science and Technology 79, no. 2 (2019): 314–22. http://dx.doi.org/10.2166/wst.2019.045.

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Abstract This study aims at defining a methodology to evaluate Ks reductions of gravel material constituting constructed wetland (CW) bed matrices. Several schemes and equations for the Lefranc's test were compared by using different gravel sizes and at multiple spatial scales. The falling-head test method was implemented by using two steel permeameters: one impervious (IMP) and one pervious (P) on one side. At laboratory scale, mean K values for a small size gravel (8–15 × 10−2 m) measured by the IMP and the P permeameters were equal to 19,466 m/d and 30,662 m/d, respectively. Mean Ks values
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33

Ranieri, Vittorio, Pasquale Colonna, John J. Sansalone, and Alessio Sciddurlo. "Measurement of Hydraulic Conductivity in Porous Mixes." Transportation Research Record: Journal of the Transportation Research Board 2295, no. 1 (2012): 1–10. http://dx.doi.org/10.3141/2295-01.

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In the past two decades, runoff-permeable porous pavement and porous friction courses of pavement systems have been implemented more frequently, first in Europe and subsequently in the United States. Consequently, research and case studies are increasing, with a commensurate increase in the knowledge base for these drainable pavement matrices and systems. The main distinguishing parameter of these porous matrices is the hydraulic conductivity (k), as compared with traditional impervious pavements. Equipment and standards for measuring k vary widely. This variability includes laboratory and fie
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34

Widomski, Marcin, Witol Stępniewski, and Anna Musz-Pomorska. "Clays of Different Plasticity as Materials for Landfill Liners in Rural Systems of Sustainable Waste Management." Sustainability 10, no. 7 (2018): 2489. http://dx.doi.org/10.3390/su10072489.

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This paper presents a study assessing the possible application of seven clay substrates of various particle compositions and plasticity, sampled locally in rural regions, as materials allowing affordable construction of the waste landfill liners, which meet the main principles of sustainability, utilize locally available materials and limit the environmental threats posed by landfill leachate to water, public health and arable land. The researched substrates were tested according to their long-term sealing properties by their saturated hydraulic conductivity after compaction, swelling and shri
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35

"Simple automatic falling head permeameter. Technical note." International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts 26, no. 6 (1989): 305. http://dx.doi.org/10.1016/0148-9062(89)91582-9.

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36

Orfánus, Tomáš, and Viliam Nagy. "Water infiltration into the soil – what do measurements indicate?" Acta Agraria Debreceniensis, September 5, 2018, 343–51. http://dx.doi.org/10.34101/actaagrar/150/1729.

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Physical properties of top-soil organic materials significantly influence initiation processes of infiltration and runoff generation. This paper deals with the specifics of water infiltration through the top surface organic layer of the forest soil. Three field methods (Guelph permeameter, Tension disk permeameter, Single-ring method) and one laboratory method (Falling head) of hydraulic conductivity (KS) determination are compared and interpreted in the context of their applicability and limitations. The Falling head method provides far different values of KS if sample cylinders are or are no
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37

"Flow Characteristics through Saturated Soil: Experimental Study." WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT 16 (April 23, 2020). http://dx.doi.org/10.37394/232015.2020.16.20.

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The flow characteristics through saturated soil is complex. For low heads, the flow is essentially linear, where Darcy’s law is applicable. For higher head, the flow is nonlinear and mathematically identified as Forchheimer’s flow. The critical flow velocity for this transition and the relevant Reynold’s number depends upon several factors, including soil and fluid characteristics. In this paper, an experimental investigation has been carried out by means of falling head permeameter with locally available soft soil sample. A critical analysis and interpretations of the test results to identify
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38

Tuffour, Henry Oppong, Awudu Abubakari, Alex Amerh Agbeshie, et al. "Pedotransfer Functions for Estimating Saturated Hydraulic Conductivity of Selected Benchmark Soils in Ghana." Asian Soil Research Journal, May 20, 2019, 1–11. http://dx.doi.org/10.9734/asrj/2019/v2i230046.

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Aims: Direct methods of measuring saturated hydraulic conductivity (Ks), either in situ or in the laboratory, are time consuming and very expensive. Several Pedotransfer functions (PTFs) are available for estimating Ks, with each having its own limitations. In this study, the performances of four popular PTFs were evaluated on different soil classes in the semi deciduous zone of Ghana. The PTFs considered herein were Puckett et al. (1985), Campbell and Shiozawa (1994), Dane and Puckett (1994), and Ferrer-Julià et al. (2004). In addition, five local data derived PTFs were used to study the poss
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