Monitoring the Durability Performance of Concrete in Nuclear Waste Containment. Technical Progress Report No. 4

Ulm, Franz-Josef

Massachusetts Institute of Technology, Cambridge, MA (United States)

关键词: Leaching;    Aging;    Fractures;    Monitoring;    36 Materials Science;   

DOI  :  10.2172/762741
RP-ID  :  4
RP-ID  :  FG03-99SF21891
RP-ID  :  762741

美国|英语

来源: UNT Digital Library

【 摘 要 】

OAK-B135 Monitoring the Durability Performance of Concrete in Nuclear Waste Containment. Technical Progress Report No. 4. The analysis of the effect of cracks on the acceleration of the calcium leaching process of cement-based materials has been pursued. During the last period (Technical Progress Report No 3), we have introduced a modeling accounting for the high diffusivity of fractures in comparison with the weak solid material diffusivity. It has been shown through dimensional and asymptotic analysis that small fractures do not significantly accelerate the material aging process. This important result for the overall structural aging kinetics of containment structure has been developed in a paper submitted to the international journal ''Transport in Porous Media''.