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Title: Identification of reactivity level in aggregates from Lithuanian gravel quarry
Authors: Rutkauskas, Aurimas
Nagrockienė, Džigita
Skripkiūnas, Gintautas
Kičaitė, Asta
Girskas, Giedrius
Keywords: Alkali-aggregate reaction
Alkalis
Aggregates
Expansion
Hygroscopic gel
Reactivity
Issue Date: 2017
Publisher: DeGruyter Open
Citation: Rutkauskas, A.; Nagrockienė, D.; Skripkiūnas, G.; Kičaitė, A.; Girskas, G. 2017. Identification of reactivity level in aggregates from Lithuanian gravel quarry, Construction science: scientific journal of RTU 20(1): 54–59
Series/Report no.: 20;1
Abstract: The article analyses the reactivity level of aggregates from Lithuanian quarries and their effect on the alkali corrosion in mortars. The reactivity of aggregates was assessed according to Rilem Recommended Test Method: AAR-2. The hardened cement paste and cracked aggregate contact zones were tested by means of optical microscopy. Two gravel aggregates and one sand aggregate from Lithuanian quarries were selected for testing. The tests revealed that according to AAR 2 methodology fine and coarse aggregates from Lithuanian quarries shall be allocated to Group II, i.e. reactive aggregates. The expansion after 14 days exceeds 0.1 % in the case of fine aggregate, the average expansion after 14 days is 0.13 %, and in the case of coarse aggregates the average expansion ranges from 0.11 % to 0.12 %.
URI: http://dspace.vgtu.lt/handle/1/3724
ISSN: 1407-7329
Appears in Collections:Moksliniai straipsniai / Research articles

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