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UNSCEAR (1993) sources and effects of ionizing radiation-United Nations Scientific Committee on the effects of Atomic Radiation, UNSCEAR 1993 Report to the General Assembly with Scientific Annexes, New York.

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• TITLE: Radon exhalation from phosphogypsum stabilized in sulfur polymer cement

  AUTHORS: Irene García-Diaz, Francisco José Alguacil, Manuel Gázquez, Juan Pedro Bolivar, Israel López Coto, Félix A. López

  KEYWORDS: Radon; Phosphogypsum; NORM; Radioactivity; Sulfur polymer Cement

  JOURNAL NAME: Natural Science, Vol.5 No.5, May 29, 2013

  ABSTRACT: Phosphogypsum (PG), primary by-product from phosphoric acid production, is accumulated in large stock-piles which were active until 2010, when spills were banned. It is considered as NORM material that contains radionuclides from 238U and decay series which are of most radiotoxicity. PG was valorized and/or recycled in a building material, sulfur polymer cement (SPC). The SPC-PG samples reach the international regulation to use in the manufacture of building materials without radiological restrictions, except the sample with the 50% of PG. Under normal conditions of ventilation the contribution to the expected radon indoor concentration is also below the international recommendation.