Development of the Engineered Barriers for the Deep Geological Disposal of High-Level Radioactive Waste
Vitrified waste, overpack and buffer material are under research and development as engineered barriers in the deep geological disposal system of high-level radioactive waste. Static leach...

Quality Control Testing for a Sand-Bentonite Liner
This paper presents the results of the quality control testing performed during the construction of a sand-bentonite liner for a sanitary landfill site in Central Florida. The available...

Bentonite Matting in Composite Lining Systems
The 1984 Hazardous and Solid Waste Amendments to RCRA mandated that double lining systems utilizing synthetic membrane liners be required for hazardous waste landfills. Recognizing the...

Permeability of Grouts Subjected to Chemicals
This paper presents the more recent results of a testing program which evaluated the long-term resistance to percolation of grouted soils, using acrylate, urethane and cement-bentonite...

Grout Slurries—Thick or Thin?
In this paper some recent experiences in dam grouting in several countries are discussed where bentonite or Intraplast additives were used to control sedimentation, viscosity, grout density,...

Slurry Trenches for Containing Hazardous Wastes
Slurry trench technology has not advanced much during the past 10 years due to a lack in research and development, the excerbated litigious climate in the environmental protection field,...

Pumped Bentonitic Mixture Used to Seal Piezometers
Methods used to install the bentonite seal and sand-cement grout seal for multi-level piezometers are described. After problems developed in trying to use bentonite pellets to install...

Effects of Mixing on Bentonite Slurries and Grouts

Cement-Bentonite Grouting for Dams

Soil-Bentonite Slurry Trench Cutoffs
Soil-bentonite cutoff walls constructed by slurry trench methods have been employed for about 3 decades. Soil-bentonite cutoff walls are constructed by excavating a continuous narrow trench...

Value Engineering and Cement-Bentonite Cutoff Wall Save Dam Project for Arizona Indian Tribe
Value engineering showed how it was possible to save $1 million in construction costs for the San Carlos River Dam, east of Phoenix, Ariz. The proposed dam site was moved to take advantage...

High-Rate Filtration in Polymer-Treated Sand Bed
The performance of a deep-bed sand filter was investigated for removal of bentonite particles with an average equivalent spherical diameter of 1.3μm. The filter internal diameter was 16.51...

Time Effects on Dynamic Shear Modulus of Clays
A Hardin oscillator was used to apply a steady-state, torsional vibratory load to remolded specimens of kaolinite and calcium bentonite inside a triaxial chamber and under an isotropic...

Bentonite Sealing Methods Compared in the Field
Two field studies were designed to test methods of sealing with bentonite. Twelve small reservoirs were constructed at each site. Utah bentonite was installed as the following types of...

Stress History Effects on Dynamic Modulus of Clay
Remolded kaolinite and bentonite triaxial specimens were subjected to isotropic consolidation pressures of 10 psi to 100 psi and overconsolidation ratios of 1 through 10. Steady-state...

Sealing Sand With Waterborne Bentonite
A model, designed to resemble field conditions as nearly as possible, was used to study the sealing of sands with waterborne bentonite. Four sizes of sand were sealed with a Wyoming bentonite...

Clay Mineralogical Aspects of the Atterberg Limits
Data is presented to show that, for artificial soils containing mixtures, in pairs, of kaolinite, illite, and bentonite clay minerals, or these individual clay minerals, the activity will...

Oahe Dam: Influence of Shale on Oahe Power Structures Design
Oahe dam site is a soft-rock site. The shale bedrock is badly faulted, has bentonite sliding planes, a low modulus and low compressive strength. Power structures are located in positions...

A Large Scale Field Shear Test on a Bentonite Seam
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