Diagnosis of concrete structures distress due to alkali-aggregate reaction
2015 ◽
Vol 63
(1)
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pp. 23-29
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Abstract Damage and defects observed in concrete elements, such as a network of microcracks, popouts and eflorrescence can be caused by a variety of deleterious processes. The causes can include mechanical (overloading), physical (freeze-thaw cycle) or chemical exposure (sulphate corrosion, alkali-aggregate reaction). This paper analyses distress due to alkali-silica reaction, detected in selected concrete structures. The analysed concrete elements exhibited cracking, exudations and surface popouts. Identification of the presence of hydrated sodium-potassiumcalcium silicate gel can be considered the primary symptom suggestive of an alkali-silica reaction attack. Other damage-causing mechanisms can occur simultaneously.
2016 ◽
Vol 125
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pp. 101-107
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2012 ◽
Vol 455-456
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pp. 781-785
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2017 ◽
Vol 216
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pp. 012041
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