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Novel, low-cost aluminum (hydr)oxide based materials for fluoride-impacted drinking-water: Batch and column studies
(2016-05)
Simple aluminum (hydr)oxides and layered double hydroxides were synthesized using common chemicals and equipment by varying synthesis temperature, concentrations of extra sulfate and citrate, and metal oxide amendments. ...
IMPACT OF MOISTURE CHANGES IN UNSATURATED SOIL ENGINEERING APPLICATIONS
(2016-12-16)
The mechanical and hydraulic properties of soil above the groundwater table change due to unsaturated conditions. While common, considering soil to be saturated as a simplifying assumption in the design of many important ...
Characterization of the iron sulfide oxidation products formed during reductive dechlorination of chlorinated aliphatic contaminants
(2016-05)
The overarching objective of this research is to investigate the transformation of iron sulfide, mackinawite (FeS), in contaminated environments. A special research focus is to investigate the FeS oxidation products formed ...
Laboratory and Field Assessment of Chemically-Stabilized Subgrade Moduli under Compressive and Flexural Loading
(2016-12-07)
The design and quality of the chemically-stabilized subgrade (CSS) layer have a vital role in the overall performance of the asphalt pavement. Uniform compaction of the CSS layer to the desired level can assure the amenability ...
Determination and Prediction of Products of Trace Metal Removal in Laboratory and Field Scale Vertical Flow Bioreactors
(2016-05)
Mine drainage is characterized by elevated concentrations of dissolved iron, sulfate, and trace metals and generally exhibits an acidic pH. These constituents, particularly trace metals, can pose serious risks to both ...
Iron Transport and Removal Dynamics in the Oxidative Units of a Passive Treatment System
(2016-12)
Abstract
Mine drainage is threat to water systems in legacy mining districts as elevated concentrations of dissolved iron, sulfate, and trace metals have an unmitigated impact on water quality. Changes in pH due to ...
In Situ Testing and its Application to Foundation Analysis in Fine-Grained Unsaturated Soils
(2016-12-16)
The in situ test is an important part of a geotechnical engineer’s arsenal. Currently, there are no established methods for interpreting results of in situ tests in unsaturated soils. The difficulty in interpreting in situ ...
Development of Soil-Pile Interaction Models in Improved Soils Using Centrifuge Test Data and System Identification Methods
(2016-05-13)
Documented distresses in pile foundations in soft soils during past earthquakes have shown that piles founded in soft soils undergo large lateral deformations during seismic loading. Improving the soil surrounding the piles ...