Volume 17, Issue 3 (Autumn 2023)
2023, 17(3): 321-334 |
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majidi F, Fathollahy M, Rahimi menbar H. Changes in alkaline silicate reaction (ASR) by changing the amount of silica aggregates and controlling the reaction. Journal of Engineering Geology 2023; 17 (3) :321-334
URL: http://jeg.khu.ac.ir/article-1-3097-en.html
URL: http://jeg.khu.ac.ir/article-1-3097-en.html
1- university of Kurdistan
2- university of Kurdistan ,m.fathollahy@uok.ac.ir
3- tarbiat modares university
2- university of Kurdistan ,
3- tarbiat modares university
Abstract: (1376 Views)
Aggregate is the main component of concrete and plays an essential role in the quality of concrete. Alkaline silicate reaction (ASR) is one of the most important reactions in concrete that can lead to concrete destruction. Aggregates containing active silica are responsible for this reaction, and the higher the amount, the greater the expected volume of reactions. The rate of increase of the reactions with changes in the amount of silica aggregates is part of the subject of this research. In this regard, a material was selected as the base material from the mountain quarry, and the necessary tests were performed on it by adding silica aggregates, 5, 10, 15, and 20 percent, the ASR test was performed on them according to the ASTM C1260 standard; The results showed that the expansion of the samples will increase by 0.01, 0.02, 0.04 and 0.06% respectively. Next, for the effect of microsilica on ASR, 5, 10, 15, and 20% were added to the materials and the results showed that microsilica reduced the expansion of the samples by 0.009, 0.014, 0.022, and 0.032 respectively and the increase of 20% of microsilica has reduced the expansion of the samples by 50%.
Type of Study: Original Research |
Subject:
En. Geology
Received: 2023/09/30 | Accepted: 2023/12/14 | Published: 2023/12/21
Received: 2023/09/30 | Accepted: 2023/12/14 | Published: 2023/12/21
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