Fracture failure of granite after varied durations of thermal treatment: an experimental study
Energy extraction from nuclear materials produces high-level radioactive waste. In geological nuclear waste storage repositories, the decay of radioactive elements generates heat, exposing the reservoir rocks to high-temperature conditions for long periods. To explore the effects of these conditions...
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2019-07-01
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Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190144 |
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doaj-c09bbf53144b48b4ba3e895deba3fc672020-11-25T03:57:36ZengThe Royal SocietyRoyal Society Open Science2054-57032019-07-016710.1098/rsos.190144190144Fracture failure of granite after varied durations of thermal treatment: an experimental studyGan FengYong KangXiao-chuan WangEnergy extraction from nuclear materials produces high-level radioactive waste. In geological nuclear waste storage repositories, the decay of radioactive elements generates heat, exposing the reservoir rocks to high-temperature conditions for long periods. To explore the effects of these conditions, this study examines the ability of granite to resist fracturing after thermal treatment for 10 h, 10 days, 30 days and 60 days. The results show that the fracture toughness of the granite remained basically unchanged for up to 10 days of thermal treatment. After thermal treatment for 60 days, the mode I, mode II and mixed-mode (I + II) fracture toughness decreased by 15.39%, 18.09% and 15.17%, respectively, compared with samples heated for 10 h. The change trends of the ability of granite to resist tensile, shear and mixed (tensile + shear) failure with an increased thermal treatment duration were basically consistent. Moreover, there was little change in its brittle fracturing characteristics with an increase in heating duration. Changes caused to the internal microstructure of the granite by high temperature were ongoing even up to 60 days.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190144nuclear energyhigh-level radioactive wastegranitefracture toughnesstemperature duration |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gan Feng Yong Kang Xiao-chuan Wang |
spellingShingle |
Gan Feng Yong Kang Xiao-chuan Wang Fracture failure of granite after varied durations of thermal treatment: an experimental study Royal Society Open Science nuclear energy high-level radioactive waste granite fracture toughness temperature duration |
author_facet |
Gan Feng Yong Kang Xiao-chuan Wang |
author_sort |
Gan Feng |
title |
Fracture failure of granite after varied durations of thermal treatment: an experimental study |
title_short |
Fracture failure of granite after varied durations of thermal treatment: an experimental study |
title_full |
Fracture failure of granite after varied durations of thermal treatment: an experimental study |
title_fullStr |
Fracture failure of granite after varied durations of thermal treatment: an experimental study |
title_full_unstemmed |
Fracture failure of granite after varied durations of thermal treatment: an experimental study |
title_sort |
fracture failure of granite after varied durations of thermal treatment: an experimental study |
publisher |
The Royal Society |
series |
Royal Society Open Science |
issn |
2054-5703 |
publishDate |
2019-07-01 |
description |
Energy extraction from nuclear materials produces high-level radioactive waste. In geological nuclear waste storage repositories, the decay of radioactive elements generates heat, exposing the reservoir rocks to high-temperature conditions for long periods. To explore the effects of these conditions, this study examines the ability of granite to resist fracturing after thermal treatment for 10 h, 10 days, 30 days and 60 days. The results show that the fracture toughness of the granite remained basically unchanged for up to 10 days of thermal treatment. After thermal treatment for 60 days, the mode I, mode II and mixed-mode (I + II) fracture toughness decreased by 15.39%, 18.09% and 15.17%, respectively, compared with samples heated for 10 h. The change trends of the ability of granite to resist tensile, shear and mixed (tensile + shear) failure with an increased thermal treatment duration were basically consistent. Moreover, there was little change in its brittle fracturing characteristics with an increase in heating duration. Changes caused to the internal microstructure of the granite by high temperature were ongoing even up to 60 days. |
topic |
nuclear energy high-level radioactive waste granite fracture toughness temperature duration |
url |
https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.190144 |
work_keys_str_mv |
AT ganfeng fracturefailureofgraniteaftervarieddurationsofthermaltreatmentanexperimentalstudy AT yongkang fracturefailureofgraniteaftervarieddurationsofthermaltreatmentanexperimentalstudy AT xiaochuanwang fracturefailureofgraniteaftervarieddurationsofthermaltreatmentanexperimentalstudy |
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1724459847078903808 |