Estimation Of Alkali Diffusivity From Dynamic Leaching Test
Author(s)
D. Sani, G. Moriconi & G. Fava
Abstract
Estimation of alkali diffusivity from dynamic
leaching test
D. Sani, G. Moriconi & G. Fava
Department of Materials and Environmental Engineering and Physics
Marche Polytechnical University, Ancona, Italy
Abstract
The reuse of waste materials from manufacturing plants in order to decrease the
material volume to be disposed to landfill is increasingly receiving public
interest. This research is focused in the evaluation of alkali diffusivity using a
short term dynamic leaching test. Such tests are necessary because of
environmental regulations. In this study, several concrete mixes were used in
order to test the applicability of the method. Concentration profiles of calcium,
sodium, potassium and chloride are interpolated with a semi-empirical
expression based on diffusion-like leaching behaviour.
Although a simplification is introduced, preliminary results indicate that the
calculated diffusion coefficient agree with those reported in several other
findings. Moreover, the presence of recycled m
Keywords
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