ABSTRACT
Concrete silicate structure durability of road pavements is significantly affected by the surrounding environment. It concerns climatic changes, including changes of temperatures, humidity, presence of soluble aggressive agents, vegetation microorganisms, etc. Consequently, expansion reactions in the concrete structure may appear and the distresses reduce its material durability. It is possible to significantly slow down the process of concrete pavement material breakdown by suitable secondary protection that does not form a continuous film on the surface.
In the paper we classified different secondary protection means based on declared chemical bases of the agents. The effect of secondary protection was laboratory tested through a modified method of describing the water absorption and determining resistance against alternate freezing in NaCl environment. We found the material bases of concrete secondary protection products have a crucial effect on the test results. In general, the water absorption results are not related to the results of alternate freezing in NaCl. The applicable mutual conversion cannot be made for this combination of laboratory tests.
