Mesos-scale modeling of irradiation in pressurized water reactor concrete biological shields
Conference
·
OSTI ID:1254799
- ORNL
- Idaho National Laboratory (INL)
Neutron irradiation exposure causes aggregate expansion, namely radiation-induced volumetric expansion (RIVE). The structural significance of RIVE on a portion of a prototypical pressurized water reactor (PWR) concrete biological shield (CBS) is investigated by using a meso- scale nonlinear concrete model with inputs from an irradiation transport code and a coupled moisture transport-heat transfer code. RIVE-induced severe cracking onset appears to be triggered by the ini- tial shrinkage-induced cracking and propagates to a depth of > 10 cm at extended operation of 80 years. Relaxation of the cement paste stresses results in delaying the crack propagation by about 10 years.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1254799
- Resource Relation:
- Conference: 9th International Conference on Fracture Mechanics for Concrete and Concrete Structures, Berkeley, CA, USA, 20160529, 20160601
- Country of Publication:
- United States
- Language:
- English
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