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WebConcrete mix design for X-and gamma shielding Mohamad Pauzi Ismail, Noor Azreen Masenwat, Suhairy Sani, Abdul Bakhri Muhammad, Mohd ... density and thickness. It is ... 2 proportion of sand and 4 proportion of coarse aggregate by weight. Table 2: JKR method Name of mix Min. Compressive Strength (N/mm2) Max aggr. Size Min. Cement (kg/m3) ... WebThe fire ratings should be considered in determining the slab thickness to be used in preliminary design. A typical 8-inch thick hollowcore plank has a 2-hour fire rating. For a higher rating (3- or 4- hour), typically a concrete (or gypsum based) topping would be applied or a spray-on fire resistant material can be added to the underside of ... Webmanufactured on 310-foot-long beds in standard widths of 48 inches and thickness of 6, 8, 10, 12 and 16 inches. High strength prestressing strands are cast into the planks at the … osceola chief quotes