Comparative analysis of fly ash effect with three different method in mortars that are exposed to alkali silica reaction

• Published in: Composites. Part B, Engineering Vol. 61; pp. 110 - 115
• Main Authors: Yıldırım, K., Sümer, M.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-05-2014
• Subjects: Alkali silica reaction (ASR); Autoclave test; Correlation; Fly ash; Mortar; Fly ash; Alkali silica reaction (ASR); Correlation; Mortar; Autoclave test
• ISSN: 1359-8368; 1879-1069
• DOI: 10.1016/j.compositesb.2014.01.004

Many researchers agree that the ASR expansion values that are made on mineral and chemical additive concrete and mortar samples give more rational results.
In this study, the potential ASR reactivity of aggregates in Sakarya province is determined. The fly ash’s effect, that is used as mineral additive in ASR, is determined in three different test method one in long term and the others in accelerated test methods.
As it can be seen when the fly ash’s contribution that are used in each of the three test methods are used over 25%, we find out that they fall below ASR standard values.
Although the long term expansion results are observed below the 6month standard values it is observed that the 12month results agree with those results of accelerated mortar bar method.
In terms of autoclave method provides results as soon as possible the mixture of pure water samples has showed us that they have been in a good correlation on the basis of 12month results and 28day results.