Mechanics, γ-ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperatures
High temperature can cause serious damage to building structures, so it is important in order to re-evaluate the residual properties of radiation shielding concrete (RSC) exposed to elevated temperatures for ensuring security of medical, industrial and defense building structures. Thus, the deterior...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523007520 |
| _version_ | 1797454544200794112 |
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| author | Lincheng Luo Zhenfu Chen Shuangyang Cai Qiuwang Tao Liping Xie Dan Jin |
| author_facet | Lincheng Luo Zhenfu Chen Shuangyang Cai Qiuwang Tao Liping Xie Dan Jin |
| author_sort | Lincheng Luo |
| collection | DOAJ |
| description | High temperature can cause serious damage to building structures, so it is important in order to re-evaluate the residual properties of radiation shielding concrete (RSC) exposed to elevated temperatures for ensuring security of medical, industrial and defense building structures. Thus, the deterioration of the mechanical, γ-ray shielding properties and acoustic emission characteristics of barite concrete (BC) and magnetite concrete (MC) exposed to elevated temperatures were studied. Research indicated that the performance of aggregates played a crucial role in the thermal stability, residual physical and mechanical properties of concrete exposed to elevated temperatures. BC was subjected from bursting and even spalling at 300 °C, while its physical and mechanical properties deteriorated drastically. However, MC still had favorable integrity and relatively high residual mechanical properties at 800 °C. The maximum deterioration temperature of BC exposed to elevated temperatures occurred at about 300 °C, while that of MC occurred at 450–600 °C. The degradation of the γ-ray shielding properties of RSC exposed to elevated temperatures was significantly lower than its mechanical properties. |
| first_indexed | 2024-03-09T15:38:42Z |
| format | Article |
| id | doaj.art-17375244f86d4d53bd540c87eaa66e8f |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:38:42Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-17375244f86d4d53bd540c87eaa66e8f2023-11-25T04:49:21ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02572Mechanics, γ-ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperaturesLincheng Luo0Zhenfu Chen1Shuangyang Cai2Qiuwang Tao3Liping Xie4Dan Jin5School of Civil Engineering, University of South China, Hengyang 421001, Hunan Province, China; China Nuclear Industry Key Laboratory of High-Performance Concrete, University of South China, Hengyang 421001, Hunan Province, China; Hunan Provincial Key Laboratory of High-Performance Special Concrete, University of South China, Hengyang 421001, Hunan Province, ChinaSchool of Civil Engineering, University of South China, Hengyang 421001, Hunan Province, China; China Nuclear Industry Key Laboratory of High-Performance Concrete, University of South China, Hengyang 421001, Hunan Province, China; Hunan Provincial Key Laboratory of High-Performance Special Concrete, University of South China, Hengyang 421001, Hunan Province, China; Corresponding author at: School of Civil Engineering, University of South China, Hengyang 421001, Hunan Province, China.School of Traffic & Transportation Engineering, Hunan Institute of Traffic Engineering, Hengyang 421001, Hunan Province, ChinaSchool of Civil Engineering, University of South China, Hengyang 421001, Hunan Province, China; China Nuclear Industry Key Laboratory of High-Performance Concrete, University of South China, Hengyang 421001, Hunan Province, China; Hunan Provincial Key Laboratory of High-Performance Special Concrete, University of South China, Hengyang 421001, Hunan Province, ChinaChina Nuclear Industry 22ND Construction Company LTD, Yichang 443101, Hubei Province, ChinaSchool of Civil Engineering, University of South China, Hengyang 421001, Hunan Province, China; Hunan Provincial Key Laboratory of High-Performance Special Concrete, University of South China, Hengyang 421001, Hunan Province, ChinaHigh temperature can cause serious damage to building structures, so it is important in order to re-evaluate the residual properties of radiation shielding concrete (RSC) exposed to elevated temperatures for ensuring security of medical, industrial and defense building structures. Thus, the deterioration of the mechanical, γ-ray shielding properties and acoustic emission characteristics of barite concrete (BC) and magnetite concrete (MC) exposed to elevated temperatures were studied. Research indicated that the performance of aggregates played a crucial role in the thermal stability, residual physical and mechanical properties of concrete exposed to elevated temperatures. BC was subjected from bursting and even spalling at 300 °C, while its physical and mechanical properties deteriorated drastically. However, MC still had favorable integrity and relatively high residual mechanical properties at 800 °C. The maximum deterioration temperature of BC exposed to elevated temperatures occurred at about 300 °C, while that of MC occurred at 450–600 °C. The degradation of the γ-ray shielding properties of RSC exposed to elevated temperatures was significantly lower than its mechanical properties.http://www.sciencedirect.com/science/article/pii/S2214509523007520Radiation shielding concreteElevated temperaturesγ-rayMechanical properties |
| spellingShingle | Lincheng Luo Zhenfu Chen Shuangyang Cai Qiuwang Tao Liping Xie Dan Jin Mechanics, γ-ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperatures Case Studies in Construction Materials Radiation shielding concrete Elevated temperatures γ-ray Mechanical properties |
| title | Mechanics, γ-ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperatures |
| title_full | Mechanics, γ-ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperatures |
| title_fullStr | Mechanics, γ-ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperatures |
| title_full_unstemmed | Mechanics, γ-ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperatures |
| title_short | Mechanics, γ-ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperatures |
| title_sort | mechanics γ ray shielding properties and acoustic emission characteristics of radiation shielding concrete exposed to elevated temperatures |
| topic | Radiation shielding concrete Elevated temperatures γ-ray Mechanical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523007520 |
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