A multi-scale review of the effects of gamma radiation on concrete

Results in Materials

Yonathan Reches¹ 

[1] US Air Force Space and Missile Systems Center, Los Angeles Air Force Base, 483 N Aviation Blvd, El Segundo, CA, 90245, USA.;

关键词: Cement;    Concrete;    Mortar;    Radiation;    Nuclear storage;    Durability;   

DOI  :  

来源: DOAJ

【 摘 要 】

For concrete used in dry cask nuclear storage, gamma radiation on the order of MGy is an important weathering mechanism. At such doses, previous studies have observed microstructural effects such as changes in carbonate speciation, which have correlated with a decrease in bulk porosity. However, the mass, dimensions, and mechanical properties of concrete have not been substantially affected, except in cases of radiogenic heating or extremely high radiation doses (≥1 ​GGy). Based on a review of the literature, a multi-scale mechanistic framework is presented to describe and model the effects of gamma radiation on concrete, including the interactions of photons with the various cementitious phases, aggregates, additives, admixtures, and forms of water. The durability of concrete to radiation is not apparently affected by the type of cement or the use of secondary cementitious materials. However, the use of Si-containing aggregates or of certain organic additives or admixtures (notably fibers or latex) may be detrimental to the durability of concrete in nuclear applications.

【 授权许可】

Unknown