ACI Concrete International · 2013 · 25 citations · 0 references
EngineeringMaterials EngineeringNuclear EngineeringBuilding MaterialsNuclear MaterialsRadiation ShieldingAggregate EvaluationConcrete MaterialsConcrete ShieldingGamma-ray ShieldingNeutron ShieldingShielding MaterialsConcrete Shielding MaterialsHigh-density ConcreteNuclear Power StationsRadiation Shielding AssessmentShielding Against Gamma RaysShielding Against NeutronsStorage CasksTransport Casks
Petrographic examination provides an effective means of detecting potentially deleterious and undesirable materials in aggregates for concrete. In this article, the authors discuss aggregates used in radiation-shielding concrete (RSC). They also cite the standards and describe the procedures for evaluating these aggregates. The article discusses how RSC is used in nuclear power plants, health care facilities, and storage/transport casks for radioactive wastes. High-density aggregates are used in RSC mixtures to attenuate gamma rays and light atomic weight aggregates are used to absorb neutrons, so their properties and proportions will affect a mixture’s radiation-shielding characteristics.