Material Properties and Carbonation Depths Measured on Seven, More Than a 100-years Old, Concrete Bridges in Slovakia

The Cause of 100-year Low Carbonated Concrete of the Bridge

“…In 2014-2015 in-situ and laboratory tests of 7 old bridges: Bratislava -the year of construction 1891, Hlohovec-1910, Krásno nad Kysucou-1891, Nyiregháza -1885 (presently in Hungary, tests performed in the cooperation of Hungary and Slovakia), Sládkovičovobefore 1920, Ružomberok-1912 and Nižná Myšľabefore 1920, were carried out. The bridge in Sládkovičovo with the found protective render coat (PRC) was firstly tested in 2015 and repeatedly in 2018 [24][25][26][27].…”

“…5) and compressive strength (CP) [33]. Descriptions of the test methods, mainly the procedures applied in Slovak Technical Standards (STN, STN ISO) are reported in a detail in the papers [24][25][26][27]. The cylindrical concrete specimens were half broken in the laboratory by longitudinal splitting.…”

Design of Concrete Made with Recycled Brick Waste and Its Environmental Performance

“…Quantitative evaluation of the parameters determining the extent of carbonation in mortars is listed in Table 23. The TSÚS method of evaluation includes six individual change criterion ∆k based on the relevant standards for the design of concrete: STN EN 206 +A1, STN EN 1992-1-1 Eurocode 2 [54] and own diagnostic practice in the area of structural concrete [55,56]. The study of changes in monitored REF-2 and EXP2 mortar properties focusing on the evaluation of carbonation resistance shows that EXP-2 mortar has the potential for resistance to aggressive CO 2 against the influence of the XC2 environment of STN EN 206 + A1.…”