Radionuclide Dataset for Construction Materials

This dataset contains a comprehensive dataset of natural radionuclides (²²⁶Ra, ²³²Th, and ⁴⁰K)and their radiation index in construction materials in various construction materials in Brazil, along with calculated radiation indices. These data were collected during the doctoral researchof Leandro Barbosa da Silva, titled "Radiometric Analysis of Construction Materials Commercializedin the State of Rio de Janeiro: Overview for the Implementation of Reference Values and Risk Incidence" in 2024 (https://www.nuclear.ufrj.br/images/undefined/Tese_Leandro_Barbosa_da_Silva.pdf). The dataset is fully processed, validated, and ready for use in scientific research, machine learningapplications, and radiological safety assessments. Key features: - 109 samples across 7 material types - 9 numerical variables - 100% data completeness (no missing values) - Fully validated (no duplicate identifiers) - Multiple formats: CSV (ML-ready), CSV (Brazilian), Excel Variables included: - 226Ra: Radium-226 activity (Bq/kg) - 232Th: Thorium-232 activity (Bq/kg) - 40K: Potassium-40 activity (Bq/kg) - Raeq: Radium equivalent activity (Bq/kg) - Theq: Thorium equivalent activity (Bq/kg) - Keq: Potassium equivalent activity (Bq/kg) - IA: Alpha radiation index - IB: Brazilian radiation index - IG: Gamma radiation index Material types: - Comercial sand (27 samples) - Structural cement (23 samples) - Crushed rock (20 samples) - Hollow ceramic / bore brick (14 samples) - Stone dust (10 samples) - Solid clay brick (9 samples) - Concrete block brick (6 samples) Files included: - dados_processados.csv: ML format (sep=',' dec='.') - dados_processados_BR.csv: Brazilian Excel format (sep=';' dec=',') - dados_processados.xlsx: Excel format The dataset includes: - Complete validation report - Descriptive statistics - 7 statistical figures - Code for reproducibility Barbosa, L., & Baygorrea, N. (2026). Radionuclide Dataset for Construction Materials. Zenodo. https://doi.org/10.5281/zenodo.21348303 License: MIT License