ABSTRACT
In numerous application, particularly in aggressive environmental conditions, cement selection is crucial for durability of concrete. Evaluation of the durability of cementitious composites is the main objective of the corrosion resistance test because aggressive liquid and gaseous media can damage the cement matrix structure. In order to ensure the corrosion resistance of concrete, slag cements with significant amount of ground granulated blast furnace slag are being used more and more frequently. This is due to the activity of granulated blast furnace slag and its influence on shaping the microstructure of the cement matrix. Paper presents the results of durability tests of mortars and concrete made of industrial slag cement CEM III/B 42,5L-LH/SR/NA. Resistance to sulphate corrosion, chloride ions permeability, carbonation depth were evaluated. Moreover, fineness and w/c ratio influence on ground granulated blast furnace slag activity were assessed.
It was found, that CEM III/B 42,5L-LH/SR/NA cement composites are characterized with high resistance to corrosive agents, especially with low w/c ratio.
