Ultrahigh performance concrete as radiation shielding with mixture of high density mineral

Radiation shielding linear attenuation coefficients μ (cm-1) is highly depends on the density of the material used. Previous studies have shown the mineral known as barite can be effectively used to increase the specific density of concrete structures. Barite in Malaysia is limited; therefore, a...

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Main Author: Masenwat, Noor Azreen
Format: Thesis
Language:English
Published: 2019
Subjects:
Online Access:http://psasir.upm.edu.my/id/eprint/85498/1/FK%202020%2031%20ir.pdf
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author Masenwat, Noor Azreen
author_facet Masenwat, Noor Azreen
author_sort Masenwat, Noor Azreen
collection UPM
description Radiation shielding linear attenuation coefficients μ (cm-1) is highly depends on the density of the material used. Previous studies have shown the mineral known as barite can be effectively used to increase the specific density of concrete structures. Barite in Malaysia is limited; therefore, a locally available alternative source must be identified to meet the requirements of high-density concrete for radiation shielding. With the aim to explore the possibilities, to be further developed for the application in the hot cell, radiation generating equipment and storing radioactive waste. This study selected steel fiber-reinforced ultra-high-performance concrete (UHPC) samples with different inert materials, namely, silica sand (2700kg/m3), amang (4000kg/m3), hematite (2967kg/m3), barite (4400kg/m3) and lead glass (3038kg/m3), as the study object and tested them experimentally for their mechanical properties and radiation absorption capabilities. The UHPC samples showed compressive strength values exceeding 155 MPa at 28 days. Meanwhile, UHPC with lead glass underwent decreased of compression strength in a long period, and UHPC with amang caused an issue related to radiological safety despite that it was effective as a γ-ray shield, UHPC with hematite and barite is very good in radiation absorption but cause an issue of practicality and country reserve. Thus, the use of UHPC with silica sand is practical for constructing nuclear facilities because of the abundance and cost-effectiveness of the involved materials.
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spelling upm.eprints-854982021-12-15T02:17:43Z http://psasir.upm.edu.my/id/eprint/85498/ Ultrahigh performance concrete as radiation shielding with mixture of high density mineral Masenwat, Noor Azreen Radiation shielding linear attenuation coefficients μ (cm-1) is highly depends on the density of the material used. Previous studies have shown the mineral known as barite can be effectively used to increase the specific density of concrete structures. Barite in Malaysia is limited; therefore, a locally available alternative source must be identified to meet the requirements of high-density concrete for radiation shielding. With the aim to explore the possibilities, to be further developed for the application in the hot cell, radiation generating equipment and storing radioactive waste. This study selected steel fiber-reinforced ultra-high-performance concrete (UHPC) samples with different inert materials, namely, silica sand (2700kg/m3), amang (4000kg/m3), hematite (2967kg/m3), barite (4400kg/m3) and lead glass (3038kg/m3), as the study object and tested them experimentally for their mechanical properties and radiation absorption capabilities. The UHPC samples showed compressive strength values exceeding 155 MPa at 28 days. Meanwhile, UHPC with lead glass underwent decreased of compression strength in a long period, and UHPC with amang caused an issue related to radiological safety despite that it was effective as a γ-ray shield, UHPC with hematite and barite is very good in radiation absorption but cause an issue of practicality and country reserve. Thus, the use of UHPC with silica sand is practical for constructing nuclear facilities because of the abundance and cost-effectiveness of the involved materials. 2019-08 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/85498/1/FK%202020%2031%20ir.pdf Masenwat, Noor Azreen (2019) Ultrahigh performance concrete as radiation shielding with mixture of high density mineral. Masters thesis, Universiti Putra Malaysia. Nuclear reactors - Shielding (Radiation) - Research Concrete construction
spellingShingle Nuclear reactors - Shielding (Radiation) - Research
Concrete construction
Masenwat, Noor Azreen
Ultrahigh performance concrete as radiation shielding with mixture of high density mineral
title Ultrahigh performance concrete as radiation shielding with mixture of high density mineral
title_full Ultrahigh performance concrete as radiation shielding with mixture of high density mineral
title_fullStr Ultrahigh performance concrete as radiation shielding with mixture of high density mineral
title_full_unstemmed Ultrahigh performance concrete as radiation shielding with mixture of high density mineral
title_short Ultrahigh performance concrete as radiation shielding with mixture of high density mineral
title_sort ultrahigh performance concrete as radiation shielding with mixture of high density mineral
topic Nuclear reactors - Shielding (Radiation) - Research
Concrete construction
url http://psasir.upm.edu.my/id/eprint/85498/1/FK%202020%2031%20ir.pdf
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