11DBMC International Conference on Durability of Building Materials and Components ISTANBUL, Turkey 11-14 May 2008 Effect of Cement Type on the Resistance of Concrete against Rapid Chloride Permeability Tolga Ilıca 1 Hasan Yıldırım 2 Özkan Şengül 3 T11 ABSTRACT In chloride containing environment, chloride permeability of concrete is a very important quality parameter affecting the service life of concrete structures. The primary objective of this experimental study was to investigate the effect of different types of cement on the resistance of concrete against chloride penetration. These cements included two different types of granulated blast furnace slag cement (CEM III/A 32.5N and CEM III/A 42.5N), a sulfate resisting cement (SRC 32.5), and a portland cement blended with fly ash, all compared to an ordinary type of portland cement (CEM I 42.5R). For each cement type, four concretes at different strength classes were produced and as a result 20 mixtures were obtained. Workability of the concretes was kept constant. Maximum size of the aggregate and aggregate grading was kept constant in all mixtures. Rapid chloride ion penetration tests according to ASTM C 1202 were conducted. Capillary water absorption tests were also carried out. In order to characterize the concrete quality, compressive strength of the specimens were obtained. The test results clearly demonstrated that the blast furnace slag cements gave the highest resistance against chloride penetration, while the pure portland cements gave the lowest resistance. Sulfate resisting cement also had a low resistance against chloride penetration. Concrete produced using the sulfate resisting cement had substantially higher capillary sorption compared to other mixtures. KEYWORDS Cement type, Rapid chloride permeability, Compressive strength, Capillarity. 1 Civil Engineer MSc, [email protected] 2 Istanbul Technical University, Faculty of Civil Engineering, Istanbul, Turkey 34469, Phone +90 212 2853761, Fax 212 2856587, [email protected] 3 Istanbul Technical University, Faculty of Civil Engineering, Istanbul, Turkey 34469, Phone +90 212 2853756, Fax 212 2856587, [email protected]
Effect of Cement Type on the Resistance of Concrete against Rapid Chloride Permeability
Apr 26, 2023
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