...Kristin M. Sample-Lord; Shan Tong; Gretchen L. Bohnhoff; Daniel D. Adeleke; Sayed A. B. Rahman Bentonite-based materials are used extensively in engineered containment barriers to limit leakage and advective flux of contaminants into the surrounding environment because of the high osmotic swell...

...Yu Lu; John Scott McCartney This paper describes a tank-scale test setup and experimental methodology used to investigate coupled heat transfer and water flow processes during heating of compacted MX80 bentonite to high temperatures. Specifically, a temperature of 200°C was maintained...

...), thus allowing suction measurements without impacting the integrity of the geotextile-bentonite-geotextile structure. Suction measurements on a granular bentonite-based GCL showed higher time dependency compared with powdered bentonite-based GCLs. For the specific GCLs and conditions tested, the woven...

... like bentonite. Therefore, this study attempts to develop a predictive model for SSCC of highly plastic soils based on easily measurable index property, plasticity index ( PI ). Four bentonites and nine bentonite–fly ash mixes were used to encompass soils with a wide range of PI . The results were used...

... suction osmotic suction salt solutions sand Kaolinite Bentonite References Agus , S. S. , Schanz , T. , and Fredlund , D. G. , 2010 , “ Measurements of Suction Versus Water Content for Bentonite-Sand Mixtures ,” Can. Geotech. J. , Vol.  47 , No.  5 , pp.  583 – 594 , https...

...Andras Fehervari; Will P. Gates; Abdelmalek Bouazza; Charles D. Shackelford A generalized centrifugation-based water retention (CWR) test has been developed to evaluate the chemical compatibility of geosynthetic clay liner bentonites with different inorganic aqueous solutions of various types...

...J. Scalia, IV; C. H. Benson; M. Finnegan Two procedures are proposed for expediting swell index (SI) tests on the bentonite component of geosynthetic clay liners (GCLs) based on ASTM D5890, Standard Test Method for Swell Index of Clay Mineral Component of Geosynthetic Clay Liners . The Fast...

... of fine-grained soils used in barrier systems for waste containment, including bentonite in geosynthetic clay liners (GCLs). ASTM D7503 prescribes the use of 1 M ammonium acetate (NH 4 OAc) as an extraction liquid for bound cations, which masks ammonium (NH 4 + ) that may be in the exchange complex...

... of slurries or grouts. 19 04 2015 12 11 2015 09 02 2016 drilled shafts deep excavation bentonite slurries density References American Association of State Highway and Transportation Officials , 2010 , AASHTO LRFD Bridge Construction Specifications , 3rd ed. , AASHTO...

...Kristin M. Sample-Lord; Charles D. Shackelford Control of the cation species on the exchange complex of bentonite and removal of excess soluble salts may be desirable when preparing specimens for research focused on fundamental clay behavior as well as for improving containment properties...

... clay liner bentonite direct shear shear strength pore pressure References ASTM D 5321, 1996 , Test Method for Determining the Coefficient of Soil and Geosynthetic or Geosynthetic and Geosynthetic Friction by the Direct Shear Method, Annual Book of ASTM Standards , Vol. 04.09 , American...

...Jisuk Yoon; Chadi El Mohtar Permeation grouting using weak grouts such as bentonite grout is one of the effective methods to mitigate liquefaction in loose saturated sand deposits. While a flow parameter of the grout such as yield stress determines its penetrability into the deposit and resistance...

...Jisuk Yoon; Chadi El Mohtar Disturbance effect on time-dependent yield stress measurement of bentonite suspension was investigated using vane and cone and plate geometry. With cone and plate geometry, the disturbance occurs as a result of the large strains the suspensions are subjected to when...

... apparatus was previously developed to mimic the mixing process associated with the use of slurries containing bentonite and granular zero-valent iron (ZVI) for in situ remediation at sites contaminated with chlorinated solvents. Example consolidation results are provided for specimens of dry sand mixed...

...David Castelbaum; Mitchell R. Olson; Thomas C. Sale; Charles D. Shackelford A laboratory mixing apparatus used to prepare test specimens of columns of soil mixed with slurries consisting of clay, typically bentonite, and granular zero-valent iron (ZVI) is described. The slurries are injected...

...Jinhyung Chung, Ph.D; David E Daniel, Ph.D The Modified Fluid Loss test (MFL) was developed to measure hydraulic conductivity using the filter press method. Based upon modification of conventional filtration models, the average hydraulic conductivity of a bentonite filter cake can be obtained from...

...Okan Önal; Ali Hakan Ören; Gürkan Özden; Abidin Kaya Volumetric shrinkage of compacted bentonite and sand mixtures has been continuously monitored at small strain levels (i.e., <5 %) using a digital image processing technique. A special digital measurement setup and a computer algorithm have...

.... 26 12 2005 22 05 2006 01 07 2006 geosynthetic clay liner bentonite shear strength dynamic loading direct shear test References ASTM, Standard D 6496, “ Standard Test Method for Determining Average Bonding Peel Strength Between the Top and Bottom Layers of Needle-Punched...

...J-M Lee; CD Shackelford A new test, referred to as the solution retention capacity (SRC), is proposed as a potentially less tedious and quicker alternative to the swell index (SI) test (ASTM D 5890) for bentonite. The SRC represents the amount of a 50-mL solution retained in one gram of oven-dried...

...T Abichou; K Tawfiq; Y Abdelrazig An investigation was performed to study the relationships between properties of slurries used in drilled shaft construction. Slurries with different bentonite and attapulgite concentrations, densities, and sand contents were prepared. The Marsh Funnel viscosity...