Surface free energy of hydrophobic coatings of hybrid fiber reinforced high performance concrete
Fragment książki (Abstrakt)
| Status: | |
| Autorzy: | Barnat-Hunek Danuta, Smarzewski Piotr |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Strony: | 43 - 43 |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | TAK |
| Licencja: | |
| Sposób udostępnienia: | Otwarte czasopismo |
| Wersja tekstu: | Ostateczna wersja opublikowana |
| Czas opublikowania: | W momencie opublikowania |
| Abstrakty: | angielski |
| The aim of the research presented in the paper was to evaluate the feasibility of using hydrophobizing preparations based on organosilicon compounds for protection treatment on hybrid fiber reinforced high perfomance concrete (FRHPC) surface. The wettability of concrete has a direct effect on the durability and corrosion resistance [1, 2]. The wetting properties of FRHPC were evaluated through the measurement of the contact angle between the surface of these materials using water and glycerine as probe liquids. On this basis, the surface free energy (SFE) was determined. The polar and disperse components of the SFE are obtained by means of the Owens–Wendt Method [3]. The three different siloxane preparations are deposited onto the seven types of concretes, with fiber content ranging from 0 to 1%. SEM examination of the coated concrete surface confirmed that the preparations A÷C can effectively cover the voids and pores present on the concrete surface. The present results indicate that surfaces of concrete with silanes film have got a wide range of SFE, depending on kind the agents. The SFE depends on the chemical reactivity of the silanes used, the type of solvent, the viscosity and surface tension of the solution. The evaluation of contact angle and SFE help to efficiently select the most appropriate preparation. |
