Low Radio-Activationized Concrete

Abstract

In order to promote the new technology in the future, high proton accelerator facilities has been constructing. For the design of this equipment, not only the radiology study but also the analysis of the environmental impacts for large circumference′s is necessary. Such as concrete engineering, material chemistry, worker′s safety or waste treatment.We research on the concrete radio-activation in the neutron field. There are 3 view points: 1.Concrete structure for stopping radio-activities 2.Short-term radiation 3 Long-term radiation. The quality of Na-24, Eu-152, H-3 in the cement-concrete are glared by the accelerator experiences. These nucleonics originate in the concrete elemental compositions. We characterized the cements, aggregates, or admixtures by this point.