4.5 Article

Usability of clay mixed red mud in Hungarian building material production industry

Journal

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
Volume 306, Issue 1, Pages 271-275

Publisher

SPRINGER
DOI: 10.1007/s10967-015-3966-z

Keywords

Red mud; Gamma spectrometry; Building material; I-index

Funding

  1. European Union projects [TAMOP-4.2.2.A-11/1/KONV-2012-0071]
  2. European Union
  3. State of Hungary
  4. European Social Fund [TAMOP 4.2.4. A/2-11-1-2012-0001]

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The naturally occurring radionuclide (Ra-226, Th-232 and K-40) content of building Materials (NORM) contributes to the total radiation dose experienced by humans. In this survey 27 clay and 68 red mud samples were surveyed with gamma spectrometry and screened according to European Basic Safety Standards (BSS) I-index. It was found that average I-index of clays was 0.6 (0.4-0.8) less than the I-index of 1, which makes them suitable for building material production. The average I-index of red mud 2.3 (1.3-3.0). The maximal mixing ratio of red mud was calculated, varied between 12 and 39 %, with 23 % average.

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