Crushed Hydrated Fly Ash as a Construction Aggregate
Hydrated fly ash (HFA) is being produced in Texas by first adding water to Class C fly ash and allowing it to hydrate in curing pits for several weeks. HFA typically attain unconfined...
Great Grouts (Available only in Geoenvironmental Special Issue)
Particulate grouting has long posed challenges to those in the geotechnical field. But significant developments in the understanding of hydration and rheology control look promising. Modern...
Comparative Simulation of Oil Weathering
Oil spills in the aquatic environment, an unfortunately more and more common occurrence, cause contamination effects which negatively impact water quality, health of ecosystems and water...
Artificial Recharge of a Buried Glacial Aquifer in South Dakota
The Huron Project of the High Plains States Groundwater Demonstration Program was designed to artificially recharge a buried glacial aquifer in eastern South Dakota High flows from the...
Studies on Herbal Desalination
India has a rich background traditional technologies. Varahamihira, an omni talented scientist of A.D 505?587 in his treatise entitled Brihatsamhita, suggested the use of five herbs for...
Preliminary Studies of a Karst Warm Spring in Mt. Kr?uterin, Austria
A warm spring occurs at the west foot of Mt. Kruterin, characterized by relatively higher temperature (17.4?C) and sulfate concentration (162 mg/L) against with the regional background...
A Three Dimensional Oil Spill Model
This paper reports the development and testing of a comprehensive three-dimensional oil spill model. At present time, the model components include advection and turbulent diffusion, vertical...
Transport Modeling of the Coastal Waters of Oahu, Hawaii
A hydrodynamic model of the coastal waters around the island of Oahu, Hawaii has been constructed to provide quantitative information on the movements and mixing of water that are to be...
Vertical Sorting Within Dune Structure
Sediment transport occurs in natural stream beds at least in part as bed load. These bed forms are typically classified as ripples or dunes depending on the bed morphology and flow conditions....
Application of a Needle Probe in Measuring Local Parameters in Air-Water Flow
In this paper, development of a double needle probe for measuring local parameters in air-water mixtures is explained. This probe is designed to measure flow velocities up to 10 m/s and...
Cement Manufacture and Use
This book,
New Advances in Shotcrete Additives: The DELVO System
The DELVO system is a two component, nonchloride chemical system developed to control the dynamics of cement hydration. Concrete, treated with the DELVO system, can be kept in a plastic...
Accelerator for Shotcrete Based Amorphous Calcium Aluminate
The authors developed an accelerator based on amorphous cacium aluminate named NATMIC for shotcrete. In Japan, accelerator based amorphous calcium aluminate are widely used in shotcrete...
Hydration Properties of Shotcrete with an Accelerator Based on Calcium Aluminate
A new powder-type accelerator based on calcium aluminate has been used for shotcrete in underground construction. This accelerator can be applied to all types of shotcreting. The shotcrete...
Geohydrologic Data and Models of Rainier Mesa and Their Implications to Yucca Mountain
The geohydrologic data collected at Rainier Mesa provide the only extensive observations in tunnels presently available on flow and transport in tuff units similar to those of a potential...
Water Quality Management in the Southern North Sea
The inhomogeneous spatial distribution of the water and (suspended) sediments quality in the southern North Sea is determined mainly by the specific transport and mixing of water masses....
Anisotropic Effects on Flow from a Recirculation Well
We examined flow in an unconfined aquifer near a recirculation well, which consists of a source and a sink of equal strength, with emphasis on understanding the effects of anisotropy....
Distribution of Stable Isotopes in Ground Water in the Rialto-Colton Basin, California
Since 1982, imported water originating in the Sierra Nevada has been used to recharge the Rialto-Colton ground-water basin, about 100 km east of Los Angeles. Stable isotopes of oxygen...
Watertable Control and Reuse of Drain Water
One of the short term alternatives for disposal of saline groundwater is direct reuse of agricultural subsurface drainage water for irrigation of the land being drained. If the groundwater...
A 2-D Lake Model with Artificial Destratification
Artificial destratification of lakes and reservoirs is used to influence a variety of water quality parameters. It relies on localized, vertical mixing of the water column and the subsequent...
Return to search