Publication detail

Gamma radiation attenuation, mechanical properties and microstructure of barite-modified cement and geopolymer mortars

JÓŹWIAK-NIEDŹWIEDSKA, D. ROVNANÍK, P. DABROWSKI, M. OŚKO, J. KUĆ, M. MACIAK, M.

Original Title

Gamma radiation attenuation, mechanical properties and microstructure of barite-modified cement and geopolymer mortars

Type

journal article in Web of Science

Language

English

Original Abstract

The present study contributes to the development of alternative materials for radiation shielding, focusing on environmental sustainability and material cost efficiency. The primary aim was to evaluate the compressive and flexural strength, mineral composition, microstructure, and gamma-ray attenuation properties of cement mortars and geopolymer mortars containing barite powder. Mortars based on ordinary Portland cement (OPC) and fly ash geopolymers with varying amounts of barite powder were assessed for their shielding properties at energy levels associated with the decay of 137Cs. From the results, key parameters such as the linear attenuation coefficient (µ), mass attenuation coefficient (µm), half-value layer (HVL), and tenth-value layer (TVL) were determined. The results showed that while cement based composites exhibited superior gamma radiation attenuation compared to fly ash geopolymer mortars, the latter had higher mass attenuation efficiency, meaning less material density was required for the same level of shielding. Additionally, cement mortars had 23–25% highermechanical strength thangeopolymermortars. Importantly, the inclusionof barite powder improved the radiation shielding performance of both materials by 7–10%, demonstrating itseffectiveness in enhancing the protective properties of these mortars. This research highlights the potential of fly ash geopolymer mortars as viable, eco-friendly alternatives to traditional cement mortars in radiation shielding applications.

Keywords

Cement mortar; fly ash geopolymer mortar; barite; gamma ray attenuation; microstructure

Authors

JÓŹWIAK-NIEDŹWIEDSKA, D.; ROVNANÍK, P.; DABROWSKI, M.; OŚKO, J.; KUĆ, M.; MACIAK, M.

Released

30. 10. 2024

Publisher

Elsevier

Location

Švýcarsko

ISBN

1738-5733

Periodical

NUCL ENG TECHNOL

Year of study

57

Number

4

State

Republic of Korea

Pages count

11

URL

https://www.sciencedirect.com/science/article/pii/S173857332400545X

Full text in the Digital Library

http://hdl.handle.net/11012/250759

BibTex

@article{BUT191363,
  author="Daria {Jóźwiak-Niedźwiedska} and Pavel {Rovnaník} and Mariusz {Dabrowski} and Jakub {Ośko} and Michal {Kuć} and Maciej {Maciak}",
  title="Gamma radiation attenuation, mechanical properties and microstructure of barite-modified cement and geopolymer mortars",
  journal="NUCL ENG TECHNOL",
  year="2024",
  volume="57",
  number="4",
  pages="11",
  doi="10.1016/j.net.2024.10.057",
  issn="1738-5733",
  url="https://www.sciencedirect.com/science/article/pii/S173857332400545X"
}