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Influence of Biofilm on Barrier Material Performance
Publisher: American Society of Civil Engineers
Abstract: Experimental work was conducted to investigate the influence of biofilm on the hydraulic conductivity and desiccation characteristics of two barrier soils. Bacteria were used to prepare solutions of varying concentration ...
Contaminant Barrier Material Textural Response to Interaction with Aqueous Polymers
Publisher: American Society of Civil Engineers
Abstract: An experimental investigation of the use of polymers dissolved in aqueous solutions to enhance the resistance of clay-based barrier materials to freeze-thaw action and desiccation was performed. The polymers considered ...
Chemically Induced Water Repellency and the Freeze–Thaw Durability of Soils
Publisher: ASCE
Abstract: Organosilane (OS) is a silicon-based coupling agent capable of producing hydrophobicity in soils. This study evaluated the applicability of OS in reducing the freeze–thaw impacts on subgrade soils. A frost-susceptible soil ...
Specific Surface Area of Barrier Mixtures at Various Outgas Temperatures
Publisher: American Society of Civil Engineers
Abstract: Specific surface area (SSA) values for Fe–smectite alone and mixtures comprising varying proportions of glacial till were determined by nitrogen-adsorption Brunauer–Emmett–Teller analysis under different outgassing ...
Verification of Contaminant Sorption by Soil–Bentonite Barrier Materials Using Scanning Electron Microscopy/Energy Dispersive X-Ray Spectrometry
Publisher: American Society of Civil Engineers
Abstract: The performance of a soil–bentonite barrier material as a sorbent for heavy metals was investigated in the laboratory using an influent containing 20 mg/L of
Durability of Boston Blue Clay in Waste Containment Applications
Publisher: American Society of Civil Engineers
Abstract: An experimental investigation of the durability of natural and polymer-amended Boston Blue Clay (BBC) used in waste containment applications was conducted. Durability was assessed in terms of hydraulic conductivity and ...
Contact Angle Measurements for Use in Specifying Organosilane-Modified Coal Combustion Fly Ash
Publisher: American Society of Civil Engineers
Pollution Intrusion on Soil-Pavement System
Publisher: American Society of Civil Engineers
Abstract: The performance of both flexible and rigid pavement is a function of the constituent materials and their susceptibility to physical and chemical stress and degradation. To that end, specific phenomena that accompany and ...
Effect of Temperature on pH, Conductivity, and Strength of Lime-Stabilized Soil
Publisher: ASCE
Abstract: Lime is often used to increase strength, reduce compressibility, and reduce moisture sensitivity in soils with moderate to high plasticity. In the case of road construction, state agencies typically have specifications ...