Risk of Concrete Damage by Alkali - Silica Reaction
Abstract eng: Expansive forces arising in concrete due to alkali-silica reaction (ASR) can damage concrete structures. ASR in concrete can occur when aggregate contains reactive silica/silicate components, there is sufficient amount of alkali metals present in concrete components that are able to pass into pore solution and additionally increase its pH value, and if concrete humidity exceeds 80 %. The greatest expansion of concrete characteristically occurs when reactive silica components are present in relatively low amount known as pessimum proportion. General principles for assessing the risk of concrete expansion due to ASR are outlined together with recommended precautions for minimizing the risk.
Publisher:
Slovak University of Technology in Bratislava, Faculty of Civil Engineering, 2008
Conference Title:
Conference Title:
International Scientific Conference 70 Years of FCE STU
Conference Venue:
Bratislava (SK)
Conference Dates:
2008-12-04 / 2008-12-05
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-11-05, last modified 2014-11-18
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