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Showing 1 to 14 of 14 for “"freeze-thaw damage"”.
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The kinetics and thermodynamics of human erythrocyte freeze-thaw damage at sub-optimal cooling rates.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1977.
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Durability of Cementitious Materials in Arctic Regions: Investigating Freeze-Thaw Damage and Chloride Ingress Diffusion Mechanisms
… coastal region faces durability challenges from freeze-thaw (F-T) cycles and chloride ingress due to seawater and deicing salts, resulting in surface scaling, spalling, and cracking. Climate change exacerbates these issues, particularly in high-latitude areas like Alaska, where rising …
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The effects of various levels of compressive stress fields on the deterioration rate and microcracking of plain concrete subjected to freezing and thawing
… members subjected to the deep-seated type of freeze-thaw damage increased as the level of the compressive stress field increased. 2. Under all levels of uniaxial compression, cracks formed parallel to the direction of the applied stress field and in any plane parallel to this direction when …
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Biostabilization of Lipid Bilayers: Dealing with Water Stress in Embryos of Artemia franciscana
… of various compositions from desiccation-induced damage were evaluated by carboxyfluorescein leakage. AfrLEA2 (cytoplasmic) and AfrLEA3m (mitochondrial) were able to offset damage during drying of liposomes that mimicked the lipid compositions of the inner mitochondrial membrane, outer …
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Development of Sustainable Masonry Brick
… saturation coefficient, efflorescence, freeze thaw damage, and resonant frequency, all being part of the established quality control procedures in this industry. For the HBS-polymer bricks, the findings indicate that, while the compressive strength, hot as well as cold water absorption …
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Design and Calibration of a RF Capacitance Probe for Non-Destructive Evaluation of Civil Structures
… in PCC (e.g., alkali-silica reaction, freeze/thaw damage, or chloride presence) can lead to significant reductions in maintenance costs. However, it is often too late to perform low-cost preventative maintenance by the time deterioration becomes evident. Non-destructive evaluation (NDE) …
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Design of systems for time delayed activated internal release of chemicals in concrete from porous fibers, aggregates of prills, to improve durability
… upon heating to temperature of polymerization. Freeze/thaw damage is somewhat reduced by the timed release of linseed oil or antifreeze from porous aggregates due to the freezing action itself. These example designs using timed release mostly gave improved durability performance when compared to …
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Development and Testing of a Capacitor Probe to Detect Deterioration in Portland Cement Concrete
… in PCC (e.g., alkali-silica reaction, freeze/thaw damage or chloride presence) can lead to significant reductions in maintenance costs. Portland cement concrete can be nondestructively evaluated by electrically characterizing its complex dielectric constant in a laboratory setting. A …
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Analysis of air-void system in hardened concrete from a three-dimensional perspective
… volume of paste protected by air voids during freeze-thaw cycles. A model developed in this study provides a statistical basis for inferring the true three-dimensional volume of protected paste from two-dimensional images. Based on statistics gathered from the two-dimensional scanned image, a …
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Crack Self-Healing in Alkali-Activated Materials: From Mechanisms to Strategies for Enhancing the Healing Efficiency
… steel corrosion, sulphate attack, and freeze-thaw damage, pose severe threats to the service life of concrete structures. Yet, sustainability is not readily achievable even if structures were made of environmentally friendly AAMs. Increasing awareness of sustainability has promoted the …
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Freeze-thaw environment of precast concrete crossties and effect of vibration on fresh materials
… to multiple deterioration mechanisms including freeze-thaw damage. This early degradation in critical transportation infrastructure necessitates a better understanding of the durability of high performance concrete in wet, wintry climates. In particular, the concrete crossties have been found to …
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Evaluating CEN/TS 12390-9 To Assess Concrete for UK Freeze-Thaw Exposure Conditions
… over the performance of these concretes in freeze-thaw environments. This research project investigated the influence of cement type on concretes subjected to freeze-thaw conditions and the correlation between the microstructural properties of concrete and freeze-thaw performance using the …
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Failure of fractured rock masses in periglacial environments.Experimental investigations on freeze-thaw induced damage.
L'abstract è presente nell'allegato / the abstract is in the attachment
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Valorisation of wind turbine blades into concrete : a contribution towards a more sustainable approach
… in a fog room, and after being exposed to 200 freeze-thaw cycles with core specimen temperature variation between −18oC and 4oC. An analytical modeling was performed for the CFFT specimens introducing the model suitable for concretes incorporating DWTB-GFRP aggregates. The material …