TY - JOUR T1 - Optimization of four different mineral additive combinations to reduce alkali silica reaction AU - Yıldırım, Korkmaz AU - Sümer, Mensur PY - 2018 DA - October Y2 - 2017 DO - 10.16984/saufenbilder.333817 JF - Sakarya University Journal of Science JO - SAUJS PB - Sakarya University WT - DergiPark SN - 2147-835X SP - 1204 EP - 1210 VL - 22 IS - 5 LA - en AB - Presence of alkali silica in aggregates that are used in concrete production causes formation of cracks anddecrease of performance over time in concrete.The first damage caused by ASR in Turkey had beenobserved in certain highway bridges in Izmir locality in 1995. It was found that some aggregates in otherregions of Turkey also have a character to cause ASR.The purpose of the study was to minimize potentialalkali silica reaction expansion in concrete and mortars produced with the aggregates that are used inconstructions in our region.Accelerated mortar bar test method was employed in the study. It wasobserved in experimental study that that the use of 20-25% fly ash, 25-35% blast furnace slag and 10%silica fume and metakaolin as mineral additive reduced ASR.According to optimization studies, it isappropriate to use 5-10% silica fume, 5% metakaolin, 10-15% blast furnace slag and 10-20% fly ash asmineral additive in optimum mixtures giving ideal expansion value.It was found that the use of 65% ofcement together with 35% silica fume, metakaolin, blast furnace slag and fly ash in mineral additivecombinations prevents ASR. KW - Metakaolin KW - Expansion KW - Silica Fume KW - Fly Ash KW - Optimization CR - [1] Stanton, D,E., ''The expansion of concrete through reaction between cement and aggregate,'' Proc. Amerikan Society of Civil Engineers, 66:1781-1881, 1940. CR - [2] Figg, J., ''ASR-Inside Phenomena and Outside Effects (Crack Origin and Pattern),'' pp.152-156, P.E.Grattan- Bellew (Ed.), Concrete Aggregate Reaction Noyes Publications, NewJersey, 509p, 1987. CR - [3] Poole, A.B., ''Introduction to Alkali- Aggregate Reaction in Concrete,'' pp.30-53 The Alkali Silica Reaction ,n Concrete, R.N. Swamy (editör) Van Nostrand Reinhold, Newyork, 1992. CR - [4] Swamy, R.N., ''Testing for Alkali Silica Reaction,'' pp.54-95, The Alkali-Silica Reaction in Concrete, R. N. Swamy (editor), Van Nostrand Reinhold, New York, 1992. CR - [5] Yıldırım, K., Sümer, M., Uysal, M., '' The Optimization of Mineral Admixture Compositions in Reducing Concrete Alkali Silica Reactions'' Unpublished PhD Thesis, 2013. CR - [6] Lewis, R., Sear, L., Wainwright, P. and Ryle, R., '' Cementitious Additions,'' Advanced Concrete Technology Set, V.3, Butterworth&Heinemann, 2003. CR - [7] Tokyay, M., ''Betonda UK, GYFC ve SD'nin Rolü,'' Beton 2013 Hazır Beton Kongresi, pp. 201-238, 2013 [8] ASTM C-289-94, “Standard Test Method for Potential Reactivity of Aggregates (Chemical Method)”, Annual Book of ASTM Standards, Annual Book of ASTM Standards, Concrete and Aggregates, Philadelphia, PA, USA, American Society for Testing and Materials, 4 (2): 157-163, 1994. CR - [9] TS 2517, ‘’Chemical Test for Potential Reactivity of Alkali Aggregates’’, Turkish Standards Institute, Ankara, 1977. CR - [10] Yıldırım K, Sumer M., ‘’Comparative Analysis of Fly Ash Effect with three Different Method in Mortars that are Exposed to Alkali Silica Reaction’’, Composites: Part B, 2013. CR - [11] ASTM C-227-97,“Standard Test Method for Potential Alkali Reactivity of Cement-Aggregate Combinations (Mortar-Bar Method)”, Annual Book of ASTM Standards, Concrete and Mineral Aggregates, Philadelphia, PA, USA, American Society for Testing and Materials, 4 (2): 126-130, 1994. CR - [12] ASTM C-1260-94,“Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)”, Annual Book of ASTM Standards, Concrete and Aggregates, Philadelphia, PA, USA, American Society for Testing and Materials, 4 (2): 650-653, 1994. CR - [13] Statistical Package for the Social Sciences (SPSS) SPSS 18 UR - https://doi.org/10.16984/saufenbilder.333817 L1 - https://dergipark.org.tr/en/download/article-file/370233 ER -