TY - JOUR N2 - Alkali-aggregate reactivity (AAR) is one of the major causes of damage in concrete. Potential susceptibility of aggregates to this reaction can be determined using several methods. This study compares gravel alkali reactivity results obtained from different tests conducted on coarse aggregates with complex petrography. The potential for the reactivity in the aggregates was revealed in the chemical test using treatment with sodium hydroxide. Optical microscopy, scanning electron microscopy and X-ray diffraction were used to identify the reactive constituents. The expansion measured in the mortar bars test confirmed that the aggregate was potentially capable of alkali silica reactivity with consequent deleterious effect on concrete. L1 - http://journals.pan.pl/Content/83978/mainfile.pdf L2 - http://journals.pan.pl/Content/83978 PY - 2014 IS - No 4 EP - 451 KW - alkali-silica reaction KW - aggregate KW - petrography KW - mortar A1 - Owsiak, Z. A1 - Czapik, P. A1 - Zapała-Sławeta, J. PB - WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES DA - 31.12.2014 T1 - Assessment gravel aggregate reactivity with alkalis inrelation to methods of test SP - 441 UR - http://journals.pan.pl/dlibra/publication/edition/83978 T2 - Archives of Civil Engineering ER -