Alkali-silica reactivity of alkali volcanic rocks


Tapan M.

EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING, cilt.19, ss.94-108, 2015 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 19 Konu: 1
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1080/19648189.2014.939303
  • Dergi Adı: EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
  • Sayfa Sayıları: ss.94-108

Özet

The purpose of this study is to determine the alkali silica reactivity (ASR) of alkali volcanic rocks (from basalt to rhyolite) that have different mineralogical, chemical compositions and textures. For this purpose, nine different alkali volcanic samples, located in seismically active Lake Van region, were collected from five different volcanic area named as Etrusk volcano, Girekol volcano, Timar, Yuksektepe and Bendimahi. Petrographical analysis, chemical method and accelerated mortar bar test results showed that intermediate and acidic alkali volcanic rocks are deleterious but basic alkali volcanic rocks are innocuous in terms of ASR. It is concluded that the products resulted from alteration processes, amount of volcanic glass in the aggregate and magma-mixing processes of the magma chamber in which rocks are formed may be effective in ASR of aggregates.