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-performance aerated concrete with a lower density . Constr. Build. Mater, 74 , 109–117. 5. Mobasher, B Li, CY 1996. Mechanical properties of hybrid cement-based composites . ACI Mater. J, 93 , 284–299. 6. Kaushik, HB, Rai, DC and Jain, SK 2007. Stress-Strain Characteristics of Clay Brick Masonry under Uniaxial Compression . Journal of Materials in Civil Engineering, 19 , 728–739. 7. Krishna, BSK 2012. Cellular light-weight concrete blocks as a replacement of burnt clay bricks . Int. J. Eng. Adv. Technol, 2 , 2249–8959. 8. Zollo, RFand Hays, CD 1998. Engineering material


In the studies for crossing the long and deep Norwegian fjords along the E39 road, on the west coast of Norway, some challenging structures have been evaluated. Some of them are known structures, like floating bridges, and some others are structures never built before, like suspension bridges on tension leg platforms and submerged floating tube bridges. In the development of the feasibility studies for these crossings, the choice of materials has played an important role. The materials influence not only the design and the cost, but also the behaviour of the structure towards the environmental loads and some particular loads as the ship collision. The article illustrates the different solutions proposed for the fjord crossings and discusses the influence in the choice of the material, with special regards to the type of concrete. The pros and cons of the application of the light weight concrete are discussed.

Proceedings of Cologne ”. Germany. Valore RC. “Cellular cement part 2 physical properties”. ACI J; 50: (36–817), (1954). Rudnai G. “Light weight concretes”. Budapest: Akademi Kiado, 1963. Hsi, J. and Martin, J. (2005). “Soft Ground Treatment and Performance, Yelgun to Chinderah Freeway, New South Wales, Australia.” In Ground Improvement-Case Histories, Elsevier Geo-Engineering Book Series, Volume 3, 563-599.

on light weight concrete by partial replacement of fine aggregate using flyash and adding thermocol”, International Journal on Engineering Technology and Sciences, Volume II, Issue IX, September-2015. KAYA, Ayse & Kar, Filiz. (2016). Properties of concrete containing waste expanded polystyrene and natural resin. Construction and Building Materials. 105. 572-578. 10.1016/j.conbuildmat.2015.12.177. Marcelo Amianti; Vagner Roberto Botaro, Recycling of EPS: A new methodology for production of concrete impregnated with polystyrene (CIP), Cement and Concrete Composites

Evaluation, 26(1): 35-55, 2011. 8. H. Tanyildizi and A. Coşkun, “Fuzzy logic model for prediction of compressive strength of light weight concrete made with Scoria aggregate and fly ash”, International Earthquake Symposium Kocaeli, Turkey, 22 26 October, 2007. 9. T. Uyunoglu, O. Unal, “A new approach to determination of compressive strength of fly ash concrete using fuzzy logic”, Journal of Scientific and Industrial Research, 65: 894-899, 2006. 10. F.A. Barrios Illidge, “Acoustic emission techniques and cyclic load testing load testing for integrity evaluation of self