Testing of a New High-Density Concrete as Neutron Shielding Material

Gallego Díaz, Eduardo F. and Lorente Fillol, Alfredo and Vega-Carrillo, Héctor René (2008). Testing of a New High-Density Concrete as Neutron Shielding Material. In: "11th International Conference on Radiation Shielding & RPSD-2008 and 15th Topical Meeting of the Radiation Protection & Shielding Division of ANS", 13/04/2008-18/04/2008, Georgia, EEUU. ISBN ISSN:0029-5450.

Description

Title: Testing of a New High-Density Concrete as Neutron Shielding Material
Author/s:
  • Gallego Díaz, Eduardo F.
  • Lorente Fillol, Alfredo
  • Vega-Carrillo, Héctor René
Item Type: Presentation at Congress or Conference (Article)
Event Title: 11th International Conference on Radiation Shielding & RPSD-2008 and 15th Topical Meeting of the Radiation Protection & Shielding Division of ANS
Event Dates: 13/04/2008-18/04/2008
Event Location: Georgia, EEUU
Title of Book: Proceedings of the 11th International Conference on Radiation Shielding & RPSD-2008 and 15th Topical Meeting of the Radiation Protection & Shielding Division of ANS
Date: 2008
ISBN: ISSN:0029-5450
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Nuclear [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We present the testing as neutron shielding material of a new high-density concrete (commercially available under the name Hormirad™, developed by the Spanish company CT-RAD). The purpose of this work was to characterize the material behavior against neutrons, as well as to test different mixings including boron compounds in an effort to improve neutron shielding efficiency. Hormirad™ slabs of different thicknesses were exposed to a 241Am-Be neutron source under controlled conditions in the neutron measurements laboratory of the Nuclear Engineering Department at UPM. The original mix, which includes a high fraction of magnetite, was then modified by adding different proportions of anhydrous borax (Na2B4O7). The same experiment was repeated with HA-25 concrete slabs, looking for a reference against ordinary concrete used to shield medical accelerator facilities. In parallel to the experiments, Monte Carlo calculations of the experiments were performed with MCNP5, with some differences found, attributable to uncertainties in the elemental composition of the samples tested. The first and equilibrium tenth-value layers have been determined for the different types of concrete tested. The results show an advantageous behavior of the Hormirad™ one, when comparing neutron attenuation against real thickness of the shielding. Although borated-concretes show a little better neutron attenuation with respect to mass-thickness, the resulting reduction in density and structural properties makes them less practical.

More information

Item ID: 4589
DC Identifier: http://oa.upm.es/4589/
OAI Identifier: oai:oa.upm.es:4589
Official URL: http://hps.org/documents
Deposited by: Memoria Investigacion
Deposited on: 14 Oct 2010 10:06
Last Modified: 20 Apr 2016 13:44
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