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Corrosion of Steel in Concrete by Bertolini L., et al.

By Bertolini L., et al.

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M. ), HETEK, Chloride Penetration into Concrete. State of the Art. Transport Processes, Corrosion Initiation, Test Methods and Prediction Models, The Road Directorate, Report No. 53, Copenhagen, 1996. P. B. Bamforth, “Specifications and tests to determine the permeability of concrete”, CEMCO-95, XXIII curso de estudios mayores de la construcciòn, Instituto E. Torroja, CSIC, Madrid, 24–26 April 1995. C. L. Page, Ø. Vennesland, “Pore solution composition and chloride binding capacity of silica fume cement pastes”, Materials and Structures, 1983, 16, 91.

A. n. a. [Ca‡‡] n. a. 3 n. a. a 1 2 3 8 5 5 I1 2 n. a. n. a. n. a. n. a. 3 31 8 n. a. n. a. n. a. a 32 33 n. a. 35 n. a. n. a. 5 41 n. a. 1 Ionic concentration (in mmol/L) measured in the pore solution extracted from cement pastes, mortars and concrete made with ordinary Portland cement (OPC) and with additions of blast furnace slag (GGBS), fly ash (PFA) and silica fume (SF). n. a. 7 %). 3 %). Interval of values from pastes exposed to environment with different CO2 concentration. 1 330–369 41 157 n.

3 the capillary pores are graphically represented by spherical cavities connected by narrow capillary cylinders whose dimensions are considered to be statistically distributed (only accessible pores are represented, i. e. pores connected with each other and with the external environment). According to this diagram, inside concrete that is exposed to the atmosphere of a certain relative humidity, pores whose diameters are below a given value turn out to be filled with water, while those with diameters above this value are filled with air.

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