Leachability of chromium and barium from concrete samples with blast furnace slag addition

Eštoková, Adriana and Oravec, Jozef and Kovalčíková, Martina (2015) Leachability of chromium and barium from concrete samples with blast furnace slag addition. Pollack Periodica, 10 (3). pp. 135-141. ISSN 1788-1994

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Abstract

The paper presents the results of leachability testing of selected heavy metals from the concrete composites of various compositions in order to assess the degree of a contamination risk of the environment. Tested concrete samples contained various amounts of special ingredients based on the blast furnace slag (65%, 75%, 85% and 95% of Portland cement replacement). Leaching tests have been performed by using distilled water. The concentrations of chromium and barium ions in the leachates were measured after period of 30 and 240 days. Changes in pH and conductivity values in leachates have been also observed.

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