CHARACTERISATION OF CONCRETE FROM THE RUPNIK MILITARY LINE

The Rupnik military line was established in about 1935 the Kingdom of Yugoslavia as a defence system against Italy. It consists more than 4000 reinforced concrete bunkers positioned on eastern part Rapallo border, varying size and purpose, top-secret project at time. Different non-destructive non-invasive techniques were used to characterise selected carefully conceived samples gain an insight into technology build these historic infrastructures. results further compared those destructive for given property. that very different compositions bunkers, extensive dispersion properties confirmed each composition. average compressive strength Schmidt hammer position is acceptable estimate actual without intervention bunker. also enables estimation secant modulus elasticity using ModelCode2010 approach. Cylinders drilled from bunker provided additional information petrography, its physical mechanical durability concrete.