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Aurimas Rutkauskas, Džigita Nagrockienė, Gintautas Skripkiūnas, Asta Kičaitė and Giedrius Girskas

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 %.

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Olga Finoženok, Božena Vanagel, Ramunė Žurauskienė and Rimvydas Žurauskas

References [1] LST EN 12620:2003 Aggregate for Concrete , Lithuanian Standards Board, Vilnius, p.56. 2009. [2] R. Uselytė, I. Silvestravičiūtė, I. Karaliūnaitė. (2007.). Recovery of new products and product validation of the feasibility study. [Online]. UAB “Ekokonsultacijos” Available: http://www.uzsidirbkpats.lt/filemaager/download/273/Ekokonsultacijos_Produktu_iteisinimas_galutinis.pdf.[Accessed 03.09.2009]. [3] Rules for waste management , Approved at December 30th, 2003 by the order No. 722 of the

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Artūrs Brahmanis and Uldis Pelīte

Premises. In: 6th Annual Conference of Young Scientists on Energy „CYSENI 2009”, Kaunas, Lithuania, 2009. [7] Brahmanis, A., Lešinskis, A., Krūmiņš, A. Case study of indirect adiabatic cooling system in historical building. In: 11th REHVA World Congress and 8th International Conference on IAQVEC “CLIMA 2013”, Prague, Czech Republic, 2013. [8] ASHRAE Handbook: Fundamentals. American Society of Heating, Refrigerating and Air-Conditioning Engineers: Atlanta, 2001. [9] SENSIRION. Introduction to relative humidity. Version 2

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Viktors Haritonovs, Martins Zaumanis, Guntis Brencis and Juris Smirnovs

Production”. Scientific Proceedings of Riga Technical university. Construction Science Vol 2. Issue 9, pp. 64-71. ISSN 1407- 7329, 2008. [6] S. Skinskas, V.E. Gasiūniene, A. Laurinavičius, I. Podagēlis. “Lithuanian Mineral Resources, Their Reserves and Possibilities for Their usage in Road Building”. The Baltic Jaurnal of Road and Bridge Engineering 5(4), pp. 218-228., ISSN 1822-4288, 2010. [7] “Road Specifications 2010” approved by Order No 01.01-03/173 of the Ministry of Traffic on 7. Sept. 2009. 239 pp., Available: http

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Ramunė Lebedeva, Gintautas Skripkiūnas and Asta Kičaitė

. Lebedeva, “The Jūrinėje aplinkoje eksploatuoto hidrotechninio betono savybių analizė,” Statyba Civil Engineering , vol. 5, no. 5, pp. 481–486, 2013. http://dx.doi.org/10.3846/mla.2013.75 [4] V. Barkauskas, V. Stankevičius, “Pastatų atitvarų šiluminė fizika,” Kaunas: Technologija, 1997, p. 269. [5] A. Bukantis, L. Valiuškevičienė, “Daily air temperature oscillations around 0 °C in Lithuania. 1 Statistical climatic analysis,” Geografijos Metraštis , vol. 36, no. 1, pp. 5–17, 2003. [6] A. Bukantis, L. Valiuškevičienė, “Dynamics of extreme air

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Viktors Haritonovs, Guntis Brencis, Martins Zaumanis and Juris Smirnovs

References [1] Y. H. Huang, Pavement Analysis and Design. Prentice-Hall , Inc., New Jersey, ISBN 0-13-655275-7, USA, 1993. [2] R. B. Mallick, T. El-Korchi, Pavement Engineering: principle and practice, CRS Press, Taylor and Francis Group, ISBN 978-1-4200-6029-4, USA. 2009. [3] S. Skinskas, V.E. Gasiūniene, A. Laurinavičius, I. Podagēlis, “Lithuanian Mineral Resources, Their Reserves and Possibilities for Their usage in Road Building,” The Baltic Journal of Road and Bridge Engineering, vol. 5(4), pp

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Andris Paeglitis, Ainars Paeglitis and Raitis Lacis

classification method for the bridge capacity rating, Construction science, Scientific Journal of Riga Technical University , Ser. 2, Vol. 11. P. 44-50. [10] Pratt A.J. 1998. Weigh in Motion technology - Economics and Performance, in Proc. of NATMEC’98 , Charlotte, North Carolina, USA, May 11-15, P. 1-6. [11] Sivilevičius H.; Šukevičius Š. 2007. Dynamic of vehicle loads on asphalt pavement of European roads which cross Lithuania, The Baltic Journal of Roads and Bridge Engineering , 2007, Vol. II, No 4, p.147-155. [12] Xin R

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Džigita Nagrockienė, Aurelijus Daugėla, Laurynas Zarauskas and Gintautas Skripkiūnas

REFERENCES [1] J. Deltuva. 2001. Betono struktūros geometrinė interpretacija, Pažangioji statyba: konferencijos pranešimų medžiaga. Kaunas: Technologija, 58–63. [2] J. Deltuva. 1995. The Transformation Principles of Concrete Macrostructure to the Structural Elements, in 4th International Conference on Modern Building Materials . Structures and Techniques. Vilnius. Lithuania, 86–91. [3] T. Uygunoğlu, I.B. Topcu, O. Gencel, W. Brostow. “The effect of fly ash content and types of aggregates on the properties of pre-fabricated concrete

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Aurimas Rutkauskas, Džigita Nagrockienė, Gintautas Skripkiūnas and Kęstutis Barkauskas

-silica reactions in Lithuanian conditions”, Chemical technology , vol. 22, no. 1, pp. 33–39, 2002. [8] J. Lindgård, Ö. Andiç-Çakır, I. Fernandes, T. F. Rønning, and M. D. A. Thomas, “Alkali–silica reactions (ASR): Literature review on parameters influencing laboratory performance testing,” Cement and Concrete Research , vol. 42, no. 2, pp. 223–243, Feb. 2012. https://doi.org/10.1016/j.cemconres.2011.10.004 [9] M.-A. Bérubé and B. Fournier, “Canadian experience with testing for alkali-aggregate reactivity in concrete,” Cement and Concrete Composites , vol. 15, no