Primary and secondary containment structures are the major components of the nuclear power plant (NPP). The performance requirements of the concrete of containment structures are mainly radiological protection, structural integrity and durability, etc. | Progress in Nuclear Energy 79 2015 48e55 Contents lists available at ScienceDirect Progress in Nuclear Energy journal homepage locate pnucene Development of high-performance heavy density concrete using different aggregates for gamma-ray shielding Ahmed S. Ouda Housing and Building National Research Center HBRC Dokki Giza Egypt a r t i c l e i n f o a b s t r a c t Article history Primary and secondary containment structures are the major components of the nuclear power plant Received 28 March 2014 NPP . The performance requirements of the concrete of containment structures are mainly radiological Received in revised form protection structural integrity and durability etc. For this purpose high-performance heavy density 14 May 2014 concrete with special attributes can be used. The aggregate of concrete plays an essential role in Accepted 9 November 2014 modifying concrete properties and the physico-mechanical properties of the concrete affect significantly Available online 28 November 2014 on its shielding properties. After extensive trials and errors 15 concrete mixes were prepared by using the coarse aggregates of barite magnetite goethite and serpentine along with addition of 10 silica fume Keywords Heavyweight aggregates SF 20 fly ash FA and 30 ground granulated blast-furnace slag GGBFS to the total content of OPC High-performance concrete for each mix. To achieve the high-performance concrete HPC- grade M60 All concrete mixes had a Linear attenuation coefficient m constant water cement ratio of cement content of 450 kg m3 and sand-to-total aggregate ratio of Half-value layer HVL 40 . Concrete density has been measured in the case of fresh and hardened. The hardened concrete Tenth-value layer TVL mixes were tested for compressive strength at 7 28 and 90 days. In some concrete mixes compressive strength was also tested up to 90 days upon replacing sand with the fine portions of magnetite barite and goethite. The attenuation measurements were .
