Estimation of Durability of Fiber Concretes With Concrete Recyclate Based on Different Interpretation of Capillarity and Absorptivity Values

Michal Stehlík

Brno University of Technology, Czech Republic

Abstract: The estimation of the durability of fiber concretes is very important information for a wider use of concretes in the building industry. It is obvious that the durability of concrete is directly related to the spatial arrangement of its pore structure. The specified values of absorptivity and capillarity of concrete may very well characterize their vulnerability to future damage with frost and chemicals. The physical nature of tests for the determination of absorptivity and capillarity of concrete, however, is different in both methods, and this difference should be included in the final interpretation of the test results to obtain an objective estimation of the durability of tested concretes.

Key words: fiber concrete, pore structure, absorptivity, capillarity, estimation of durability