Products tagged with 'alkali-silica reaction'

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51318-11005-Evaluation and Repair of Natural Draft Cooling Towers

Product Number: 51318-11005-SG

Author: M. Gries / K. Michols / J. Lawler / D. Whitmore / M. Miltenberger

Publication Date: 2018

$20.00

A case history is presented to illustrate how assessment data was collected, interpreted, and used to develop and implement repair strategies for two 400 foot (121 m) tall hyperbolic shell cooling towers exhibiting widespread corrosion-induced deterioration.

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Demonstration of Electro-Osmotic Pulse (EOP) Technology to Mitigate Alkali-Silica Reaction in Concrete Pavement

Product Number: 51324-21198-SG

Author: Vincent F. Hock; Michael K. McInerney; J. Chad Pierce; Heather E. Creason

Publication Date: 2024

$40.00

Many private-sector, federal government, and Department of Defense (DoD) facilities experience the problem of concrete deteriorating via alkali-silica reaction (ASR). ASR is a form of concrete corrosion that slowly deteriorates concrete from the inside by forming highly expansive gels that cause cracking and swelling of the concrete matrix. This paper summarizes the results of a project that evaluated Electro-Osmotic Pulse (EOP) technology to mitigate ASR in an area of the visitor’s ramp at Campbell Army Airfield. An EOP system was designed, installed, and monitored in a concrete pavement section affected by ASR. In addition to installing EOP technology, concrete moisture monitoring probes were installed at selected locations. The performance of the EOP system was evaluated by recording temperature and moisture levels inside the concrete for a period of nine months. The ability of the EOP system to mitigate ASR is inconclusive. Although there are indications that moisture is being removed from the concrete pavement, it is not clear that the concrete’s internal relative humidity has been reduced below 80%, the moisture reduction value that ensures ASR will not occur. A long-term approach for performance monitoring must be completed before the technology can be recommended.

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Life Beyond 80: Can Concrete Degradation’ Synergetic Modes Become Showstoppers for Light Water Reactors?

Product Number: ED22-17261-SG

Author: Yann Le Pape, Elena Tajuelo Rodriguez, Bethel Amani Cheniour, Mohammed Alnaggar, Paula Bran Anleu, Thomas M. Rosseel, David Arregui Mena, Adam Brooks

Publication Date: 2022

$20.00

The US light water reactor (LWR) fleet is a strategic US asset for meeting the demand for clean, sustained, and affordable energy. Extended operations are governed by endogenous (e.g., aging management, operation costs) and exogenous (e.g., natural gas, deployment of advanced nuclear reactors) economic factors but also by technical issues associated with doubling the original 40 year license period. Materials aging includes all critical components of the reactors, such as internals, reactor pressure vessel, cabling, and concrete structures.

Products tagged with 'alkali-silica reaction'

51318-11005-Evaluation and Repair of Natural Draft Cooling Towers

Demonstration of Electro-Osmotic Pulse (EOP) Technology to Mitigate Alkali-Silica Reaction in Concrete Pavement

Life Beyond 80: Can Concrete Degradation’ Synergetic Modes Become Showstoppers for Light Water Reactors?

Association for Materials Protection and Performance