Results 41 to 50 of about 9,473 (234)

The damage and failure mechanism of prestatically loaded rock during medium‐strain rate cyclic impact loading

Deep Underground Science and Engineering, EarlyView.
Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang, Hanpeng Wang, Zicheng Wang, Xinyuan Xie, Yunhao Wu, Jinhou Zhang, Dekang Sun   +6 more
wiley   +1 more source

A rock brittleness index based on the postpeak energy release rate and damage surface characteristics for brittle hard rock

Deep Underground Science and Engineering, EarlyView.
This study examines energy evolution in rock rupture via triaxial direct shear tests, exploring the impact of confining pressure and temperature on fracture surface randomness. A novel energy‐based brittleness index is proposed, validated experimentally, and compared with existing methods for reliability and accuracy.
Biao Wang, Zaobao Liu, Jing Xue, Bo Lu, Wei Zeng, Dengke Zhang   +5 more
wiley   +1 more source

Surface Alteration of Borosilicate and Phosphate Nuclear Waste Glasses by Hydration and Irradiation

Challenges, 2020
We examined the degradation of nuclear waste borosilicate and phosphate glasses containing strong alpha-emitter 238Pu at a specific activity of 6.33 × 105 MBq/g in comparison with similar non-radioactive, non-radioactive irradiated and radioactive ...
Bella Y. Zubekhina, Boris E. Burakov, Michael I. Ojovan   +2 more
doaj   +1 more source

Thermal‐induced fracture evolution and acoustic signature of Beishan granite: Insights into tensile strength of barrier system for high‐level radioactive waste disposal

Deep Underground Science and Engineering, EarlyView.
The tensile strength of granite, a proposed host for nuclear waste, degrades severely above 400°C. We link this to specific microcracking patterns captured by acoustic emission, establishing a scientific basis for assessing repository safety under thermal load.
Wei Zeng, Shijie Li, Xiaozhao Li, Zhen Huang, Shangtong Yang, Wentao Xu, Biao Wang, Yun Wu   +7 more
wiley   +1 more source

Activity release calculation from the near-field of a repository for spent fuel

Frontiers in Nuclear Engineering
It is essential for the safety assessment of a repository to analyze the release and transport of radionuclides from the near-field to the geosphere and subsequently to the surface environment.
Ping Chen, Qi Zhang, Chengming Shang
doaj   +1 more source

Ceramics for high level radioactive waste solidification [PDF]

Journal of Advanced Ceramics, 2012
Several countries reprocess their nuclear spent fuel using the Purex process to recover U and Pu as MOX fuel. The high level radioactive waste (HLW) produced during this reprocessing is a complex mixture containing both radioactive (fission products, minor actinides) and non-radioactive elements. Since HLW shows high rate heat release and contains some
Wang, Li, Liang, Tongxiang
openaire   +1 more source

From a Probabilistic PBEE Framework to Risk‐Targeted Structural Design With Cascading Hazards: Engineering Application for Seismic–Radiological Safety

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Earthquake‐induced damage of structures can trigger cascading hazards, linking structural performance to nonstructural consequences. In current engineering practice, these two aspects are typically addressed separately, limiting the ability to account for such coupled effects in design.
Matjaž Dolšek, Peter Fajfar, Anže Babič   +2 more
wiley   +1 more source

“Nature's Polymer Reimagined: Conventional and Green Routes to Pectin, Its Bioactive Promise and Industrial Applications”

Food Chemistry International, EarlyView.
Pectin, a versatile natural polymer, is extracted through conventional and emerging green extraction methods, offering multifunctional bioactive properties useful in food, pharmaceutical, and environmental applications. ABSTRACT Pectin, a molecular tapestry woven from diverse polysaccharides, holds a pivotal role across food, pharmaceutical, and ...
Afra Anika Rafique, Aunwesha Sahani, Md Morsaline Billah, Kazi Mohammed Didarul Islam   +3 more
wiley   +1 more source

Influences of confining pressure and fracture inclination on mechanical behavior of granite

Yantu gongcheng xuebao
The mechanical behavior of host rock with fractures is crucial for the long-term stability and safety of a high-level radioactive waste geological disposal facility.
WANG Chunping 1, 2, LIU Jianfeng 3, LIU Jian 1, 2, WANG Lu 3, 4, XUE Fujun 3
doaj   +1 more source

Analysis of the Institutional Framework For Radioactive Waste Management in Indonesia

Atom Indonesia, 2009
The analysis of the infrastructure for radioactive waste management in Indonesia has been studied using several parameters, i.e. policy, regulatory authorities and their regulations, implementing organizations and financial system.
D.S. Wisnubroto
doaj   +1 more source