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Showing 1 to 20 of 63 for “"deicing"”.
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Autonomous Salting Robot: A Deicing Revolution
… by offering consumers an autonomous method of deicing walkways and driveways. The target market for the ASR consists primarily of households, expanding to include businesses and municipalities as Saltonomous Industries grows. The two essential working principles for the robot are (1) magnetic …
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The Chloride Content of Run-off Water Due to Street Deicing
[iii], 41 leaves. Advisor: F. Emmitt Jakob
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An 8-level flying capacitor multilevel converter for aircraft pulse deicing
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-03-28 without embargo terms
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Airport Performance Metrics Analysis: Application to Terminal Airspace, Deicing, and Throughput
… the second study, we analyze the efficiency of deicing operations at Chicago O'Hare (ORD) by developing an algorithm that analyzes radar data. We also use a simulation model to calculate potential improvements in the deicing operations. Lastly, we present our results of a clustering analysis …
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Ground-Source Bridge Deck Deicing and Integrated Shallow Geothermal Energy Harvesting Systems
… of thermo-active foundations is in bridge deck deicing. Bridge decks experience two main winter weather related problems. The first of which is preferential icing, where the bridge freezes before the adjacent roadway because the bridge undergoes hastened energy loss due to its exposed nature. …
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EFFECTS OF DEICING SALTS ON THE DURABILITY OF CONCRETE INCORPORATING SUPPLEMENTARY CEMENTITIOUS MATERIALS
… while exposed to solutions of one of the three deicing salts or deionized water in which the temperature of the specimens ranged from 39.2 ºF (4 ºC) during the wetting cycle to 73 ± 3 ºF (23 ± 2 ºC) during the drying cycle. Of special interest were the effects of CaCl2 and MgCl2, which result in …
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Evaluation of the environmental impacts and alternative technologies of deicing/anti-icing operations at airports
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.
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The effects of chloride-based deicing chemicals on degradation of portland cement mortars with alkali reactive aggregate
<p>The assessment of the influence of deicing chemicals on alkali reactivity of aggregates is still an area of active research, particularly with respect to the combined effects of long-term exposure to deicers, freezing and thawing cycles, and wetting and drying cycles. In order to develop a more …
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Modifications to an Existing Glycol Retention Pond and Alternative Technologies Review for Aircraft Deicing Operations and Glycol Recovery and Treatment: Dane County Regional Airport
… purpose of this study was to review new aircraft deicing technologies and developments and surmise which approach may be the most appropriate for the Dane County Regional Airport’s (KMSN) expansion plans, size, available funds, and environmental impact reduction efforts. This paper focuses on the …
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A machine learning study of wind-driven runback/flow-off multiphase flows pertinent to aircraft icing phenomena
… section of the study shifts its attention to the deicing fluids flow-off process during aircraft take-off. Deicing fluids employed on aircraft surfaces serve the purpose of mitigating ice accumulation; however, their presence might have adverse effects on aerodynamic performance during the …
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A reexamination of stratification processes in Ides Cove, N.Y. with reference to sediment geochemistry
… being attributed to the heavy application of deicing salts in the cove's watershed. Application of deicing salts to roads in the Town of Irondequoit has steadily declined from 31,230 metric tons in 1970-71 to 3,981 tons in 1979-80. Salt concentrations in surface waters of the cove have …
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Salt retention in wetland soils and effects on dissolved organic carbon export
<p>Deicing salt runoff has negative effects on ecosystems. Wetland ecosystems can act as important filters for runoff pollution (e.g., nutrients), mitigating damage to plants and microbes. Wetlands are important sinks for nutrients and pollutants (e.g., road salt) and transformation spots for many …
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Pulse de-icing for aircraft applications
… work, we develop and study electro-thermal pulse deicing capable of ensuring efficient and rapid removal of ice from aircraft during on-ground, takeoff, or flight operation. The pulse approach enables the efficient melting of a thin (<100 µm) ice layer at the aircraft surface in order to limit …
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Evaluation of the effectiveness of deep polymer impregnation as a corrosion abatement technique for overlaid bridge decks
… principal source of chloride ions is from the deicing salts applied on the decks during winter. More than 9 million tons of deicing salts are consumed each year in the U.S.A. As corrosion products have a larger volume than steel, corrosion causes cracking and spalling of the deck. Concrete …
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Subsidence Cracking of Concrete Over Steel Reinforcement Bar in Bridge Decks
… salt laden environments. Chlorides from either deicing salts or marine environments may cause chloride-induced corrosion of the reinforcing steel resulting in spalling of the cover concrete. Concrete specimens with 16 mm (# 5) diameter bars were cast with various cover depths, bar spacing and …
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Repair of damaged end regions of prestressed concrete girders using fiber reinforced polymer composite materials
… is the deterioration of the girder ends due to deicing salt exposure, thus reducing their shear strength. This thesis presents the results of the beginning stages of an Illinois Department of Transportation (IDOT) sponsored study to use FRP materials to repair and retrofit the damaged ends of …
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Verifying the Calcium Oxychloride Threshold in Cementitious Pastes
… chloride (CaCl2) or magnesium chloride (MgCl) deicing salts and calcium hydroxide in the cementitious matrix. Currently, the accepted CAOXY threshold at which deterioration is mitigated in cementitious paste is 15 g/100 g paste (15 oz/100 oz paste); however, this limit was developed using …
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Design and field testing of jointless bridges
… They are also a "weak link" that can allow deicing chemicals to seep down and corrode bearings and support components. Because the design is difficult and their behavior is unknown, they are not widely used despite the enormous benefits. There are no standardized design procedures for these …
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Windshield Defrost and Deice Using Carbon Nanotube Composite
… film heater, particularly for defrosting or deicing windshields, and can also be applied to other surface types that need instant heating. This research can replace conventional heaters, Indium Tin Oxide (ITO), which are fabricated either by dielectrophoresis or piece-wise alignment.</p>
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