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International Burch University Sarajevo , sarajevo , Bosnia and Herzegovina
University of Bihać and International Burch University Sarajevo , bihac, sarajevo , Bosnia and Herzegovina
Successful examples of high–rise buildings in the world are obvious evidences that the use of high–strength concrete is nowadays reality in construction worldwide. Whether focus on high–rise buildings up to 15– 24 storeys, or the super tall high–rise buildings that are few hundred of storeys high, high–strength concrete of different qualities is the unavoidable choice in search for structural material. If technology development and economic efficiency opened up a gate to high–strength concrete towards wider market, high–rise buildings for sure enhanced benefits and abilities of high–strength concrete as commonly available structural material. Use of such environmental friendly, structurally safe and very resistant material enabled idea and concepts of vertical cities and vertical living. Another factor in definition of high–strength concrete is also a demand for specific strengths or performances of concrete. In the specific case of the USA or some rapidly growing Asian countries or cities, 95 MPa high–strength concrete is available in most of concrete plants, and at same time it is economically and cost efficient. On the other hand, situation in Balkan area is totally opposite. Abilities to use high- strength concrete in this area is not even adequately researched, and the top limit of concretes’ strength may appear to be up to 60 MPa, which corresponds to relatively weak economical and cost efficiency.
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