Cement-boron carbide concrete as radiation shielding material

  • Yusof Abdullah
Keywords: Boron carbide, concrete, shielding, neutron, attenuation

Abstract

ABSTRACT 

Boron carbide (B4C) is a ceramic material which is effective to absorb thermal neutron due to wide neutron absorption cross section. In this work, B4C is added into concrete as fine aggregates to test the attenuation properties by getting the attenuation coefficient of the concrete/B4C. The samples of concrete/B4C were exposing to the thermal neutron radiation source (241-Americium-Berylium) at the dos rate of 29.08 mR/h. The result show that the attenuation coefficient of the sample with 20wt% B4C is 0.299cm-1 and the sample without B4C is 0.238cm-1 and hence, concrete/B4C is suitable as a shield for thermal neutron radiation.

 

ABSTRAK 

Boron karbida adalah bahan seramik yang berkesan untuk menyerap neutron terma kerana ia mempunyai keratan rentas penyerapan neutron yang luas. Dalam kajian ini, B4C ditambah dalam konkret dalam bentuk agregat halus bagi menguji sifat pelemahan menerusi penilaian pekali pelemahan konkret/B4C. Sampel konkret telah didedahkan kepada sumber sinaran neutron terma (241-Americium-Berylium) pada kadar dedahan 29.08 mR/h. Keputusan menunjukkan bahawa pekali pelemahan sampel 20% B4C adalah 0.299cm-1 dan sampel tanpa kandungan B4C adalah 0.238cm-1 dan oleh itu membuktikan bahawa  konkret/B4C adalah sesuai dijadikan sebagai pelindung sinaran neutron terma.

Published
2010-12-31
How to Cite
Abdullah, Y. (2010). Cement-boron carbide concrete as radiation shielding material. JOURNAL of NUCLEAR and Related TECHNOLOGIES, 7(02), 74-79. Retrieved from http://jnrtmns.net/index.php/jnrt/article/view/151
Section
Articles