Journal of Cold Regions Engineering: Recent submissions
Now showing items 601-620 of 748
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Biological Phosphorus Removal: Effect of Low Temperature
(American Society of Civil Engineers, 1996)Phosphorus is a key nutrient responsible for eutrophication. Conventional activated sludge process (ASP) removes approximately 30 to 40% phosphorus. Additional phosphorus removal has been achieved by incorporating an ... -
Ice Jam Mitigation Using Setback Dykes: Coldwater River at Merritt, B.C.
(American Society of Civil Engineers, 1996)Merritt, B.C. has a history of suffering damages from ice-jam and open-water floods. The most damaging flood on record happened in the city in 1991 due to an ice jam on the Coldwater River. A numerical ice-jam model is ... -
Probability Distributions for Peak Stage on Rivers Affected by Ice Jams
(American Society of Civil Engineers, 1996)Evaluation of alternatives to reduce the severity of ice-jam flooding requires the development of probability distributions for ice-affected stage at nongauged locations along a river reach. Difficulties arise as the ... -
Comparison of Load Restriction Timings Determined Using FHwA Guidelines and Frost Tubes
(American Society of Civil Engineers, 1996)The Federal Highway Administration (FHwA) method and frost-tube measurements are used in Wisconsin to determine the timing and duration of spring load restrictions. In both methods, depth of freeze or thaw is used to ... -
Book Review
(American Society of Civil Engineers, 1996) -
Pore-Water Pressures in Freezing and Thawing Fine-Grained Soils
(American Society of Civil Engineers, 1996)Laboratory freezing tests were performed on laterally confined samples of lightly overconsolidated fine-grained soil exposed to one-dimensional freezing at a constant temperature gradient. Pore-water pressures and temperatures ... -
Concrete/Reinforcing Steel Bond Strength of Low-Temperature Concrete
(American Society of Civil Engineers, 1996)It is estimated that in the United States the cost of protecting freshly placed concrete from freezing damage is approximately $800 million annually. Chemical admixtures depress the freezing point of water and allow concrete ... -
Probability Distributions Used in 100-Year Return Period of Air-Freezing Index
(American Society of Civil Engineers, 1996)The air-freezing index (AFI) is a measure of the combined magnitude and duration of air temperatures above and below freezing for a winter season. The 100-y return period of the AFI has been found to be an indicator of the ... -
Aging and Low-Temperature Cracking of Asphalt Concrete Mixture
(American Society of Civil Engineers, 1996)Low-temperature cracking in asphalt concrete (AC) pavement is influenced by several factors broadly categorized as material, environmental, and pavement-structure geometry. Among the environmental factors affecting ... -
Hindsight on River Ice Jam Stability
(American Society of Civil Engineers, 1996)Following a brief account of the development of ice jam stability theories since the 1960s, inconsistencies in their interpretation for practical applications are identified. In particular, the widely used “bell-shaped ... -
Guest Editorial
(American Society of Civil Engineers, 1996) -
Long-Term Pile Load Testing System Performance in Saline and Ice-Rich Permafrost
(American Society of Civil Engineers, 1996)A long-term pile load testing program was completed at two distant early warning (DEW) line sites; two piles were embedded into a tabular ice body, and three in a saline fine-grained soil. The piles were loaded in compression ... -
Performance Evaluation of Overland Flow Wastewater Treatment System under Winter and Summer Conditions
(American Society of Civil Engineers, 1996)A study was conducted to evaluate the effects of seasonal variations, summer and winter conditions, on the performance of an existing and successfully operated overland flow wastewater treatment system in the Midwest. The ... -
Predicting Breakup Ice Jams Using Logistic Regression
(American Society of Civil Engineers, 1996)Breakup ice jams form suddenly and with little warning. The lack of forewarning hinders emergency response and ice jam mitigation efforts. Present knowledge of breakup jam processes does not allow for the development of a ... -
Potential for Greater Use of Wetlands for Waste Treatment in Northern Canada
(American Society of Civil Engineers, 1995)The use of wetlands for low-cost and energy-efficient treatment of municipal wastewater is not a new process. In the Northwest Territories, Canada, wetlands have not been used much for wastewater treatment due to the lack ... -
Flowthrough Rockfill Embankments: Behavior in Subzero Temperatures
(American Society of Civil Engineers, 1995)To date there is virtually no information on the behavior of flowthrough rockfill structures in subzero temperatures. This paper presents new insights into this behavior through consideration of the results of laboratory ... -
Intermittent-Discharge Lagoons for Use in Cold Regions
(American Society of Civil Engineers, 1995)Lagoon treatment is a common wastewater-treatment option for small communities. In cold regions the design and use of lagoons must consider some unique concerns that impact performance due to cold climates. Many of the ... -
Estimation of Burial Depths for Pipelines in Arctic Regions
(American Society of Civil Engineers, 1995)Ice scouring poses a significant threat to underwater pipelines for offshore oil production facilities in ice-infested waters. For most locations, the only options against this hazard are to protect the pipeline by trenching, ... -
Freeze-Thaw Dewatering and Structural Enhancement of Fine Coal Tails
(American Society of Civil Engineers, 1995)An 18.2-ha coal tailings impoundment that reached full capacity in 1989 has since been undergoing reclamation activities. The impoundment is sectioned into coarse, intermediate, and fine tails regions. The fine tails region, ... -
Reinforcement Percentage Effects on Bending Strength of Soil-Ice Mixtures
(American Society of Civil Engineers, 1995)Construction in remote Arctic locations is made more difficult and expensive by the need to bring to site bulky building materials. This need can be reduced by the use of ice-soil mixtures. The strength of this reinforced ...