alkali-silica reaction

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alkali-silica reaction

In portland cement, the reaction between the alkalies and particular siliceous rocks and/or minerals which are present in some aggregates; may result in abnormal expansion and cracking of concrete under service conditions.
References in periodicals archive ?
Alkali silica reaction represents a severe form of concrete deterioration.
The old bridge was suffering from alkali silica reaction, commonly known as concrete cancer.
Engineered for long-term durability, NewCem slag cement helps structures achieve greater strength potential, reduced permeability, and increased resistance to sulfate attack and alkali silica reaction. High replacement levels of slag cement in properly proportioned mixes also help control shrinkage, creep and thermal cracking in mass concrete structures.
This study was planned to explore the possible causes of alkali silica reaction (ASR) and their consequences in the environment of Pakistan.
Alkali silica reaction (ASR) is one of the critical internal swelling reactions that affect stability of concrete structures by cracking (Fournier and Berube 2000).
Alkali silica reaction ASR) yra viena is cheminiu reakciju, kurios turi didele itaka betono ilgaamziskumui.
The use of low-lime Class-F fly ash can greatly reduce the expansion due to alkali silica reaction in RCA concrete (ECCO 1999).
The NRC reported that during the license renewal application for the Seabrook plant, NextEra identified concrete degradation at the facility in the form of alkali silica reaction (ASR).
Neither contains sodium or potassium salts which can contribute to surface crazing/surface ASR (alkali silica reaction).
With growing concern over alkali silica reaction (ASR) problems in this state, the Arizona Chapter of the National Spa & Pool Institute is developing voluntary standards for pool concrete.
Mineralogical studies of Jhelum river aggregate revealed that most of the aggregate components (Sandstone, Quartz Arenite) are suitable for construction but some of these are highly susceptible to alkali silica reaction due to the presence of highly strained quartz.