In this thesis, we were following changes of the concrete microstructure due to its exposure to acidic
environment at normal and elevated temperatures. These changes were estimated by the monitoring
changes of concrete’s dynamic modulus of elasticity with time. We also determined compressive
strength of concrete and its resistance to the penetration of water under pressure. The obtained results
were different for different concrete mixtures under consideration. In the study we used two types of
stone aggregate and four different binders which give eight different concrete mixtures. As a reference
binder we selected pure Portland cement (CEM I), and to the other three binders we added silica fume,
fly ash and/or slag to the clinker. Experimental results showed that the most adequate binder for an
acidic environment under consideration is slag cement with the addition of fly ash and silica fume.
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