@article{article_516958, title={Alkali-Silica Reaction Potential of Arc-related Volcanic Rocks from the Göksun Ophiolite (Kahramanmaraş-Turkey)}, journal={Afyon Kocatepe Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi}, volume={17}, pages={247–256}, year={2017}, author={Rızaoğlu, Tamer}, keywords={Ophiolite; volcanic,aggregate,Alkali-silica reactivity,Accelerated mortar bar method}, abstract={<div>The alkali-silica reactivity is one of the most important problems that can occur in concrete structures. </div> <div>Because of their wide spectrum of mineralogical compositions and phases, volcanic rocks are more </div> <div>likely to cause alkali-silica reactivity. In this study, alkali-silica reactivity potentials of the rocks </div> <div>representing the upper levels of the crustal section of the Late Cretaceous suprasubduction-type </div> <div>Göksun ophiolite in the Tauride ophiolitic belt have been investigated. The Göksun ophiolite displays </div> <div>and intact ophiolite pseudostratigraphy with the thick layer of volcanic section characterized by a </div> <div>different composition of rock units such as basalt, basaltic-andesite, andesite, dacite and rhyolite. </div> <div>Firstly, the petrographic determinations of the samples derived from these volcanic units were made </div> <div>and then geochemical analyzes carried o ut o n t he s ame s pecimens t o c ontrol t he a ccuracy o f t he </div> <div>petrographic analyzes and the rocks were classified according to trace elements. Finally, the </div> <div>accelerated mortar bar method was applied on the concrete bars produced from same rock samples to </div> <div>compare the variation of Alkali-Silica Reactivity (ASR) with lithology. The test results yielded that the </div> <div>intermediate volcanics have much Alkali Silica Reactivity (ASR) potential than basic and acidic volcanics </div> <div>(basalts, rhyolites and dacites). It is estimated that the glassy matrix of the intermediate volcanics is </div> <div>partly responsible for the alkali-silica reactivity. SiO2, TiO2, Al2O3, Na2O a nd K 2O values have show </div> <div>positive correlation with the amounts of expansion in the andesite and basaltic andesites, whereas the </div> <div>major oxide contents of acidic and basic volcanic rocks have no clear relation with the expansion ratios. </div>}, number={1}, publisher={Afyon Kocatepe Üniversitesi}