| In order to solve the problem of resource utilization of steel slag, the application of steel slag and iron filings in the preparation of radiation resistant concrete was studied. Through the mix proportion design and strength test of concrete test block, it is found that the compressive strength of concrete increases gradually with the increase of iron filings content. When the amount of iron filings reaches 30%, the compressive strength appears the maximum value. With the increase of steel slag content, the compressive strength of concrete decreases gradually. When the content of steel slag is more than 20%, the compressive strength decreases significantly. By using the research conclusion, radiation resistant concrete block is prepared. When the mixture ratio is: gelling material∶fine aggregate∶hematite∶water∶water reducing agent is 1∶3. 11∶3. 84∶0. 41∶0. 01, the mechanical properties, density and workability are better. At this time, cementitious materials composed of cement slag steel slag 7∶2∶1, fine aggregate is composed of hematite ore: iron boron glass powder for 1∶1. 28∶0. 49(volume ratio 4∶3∶3), concrete block density is 3 550 kg/m3 and the strength grade of C30. |