Utilization of wastes and by-products as concrete aggregate has received increasing attention in the last few years. Lead slag extracted from recycling of the spent batteries, is one of these waste materials which have high potential and can be utilized as substitute of raw materials in construction of radiation shielding concrete. For utilization of lead slag as Radiation-shielding concrete aggregate, we should consider different criteria. Therefore, It is necessary to find an optimal mixture to produce Lead Slag radiation shielding concrete (LSRSC) with desired quality characteristics. In the present work, Taguchi method in combination with grey relational analysis is applied to find the optimal mixture of LSRSC with multiple responses. In the application of this method, water/cement ratio, cement quantity, volume ratio of lead slag aggregate and Silica fume were selected as control factors with responses of slump, Unit weight, compressive strength and gamma attenuation coefficient to assess the optimal mixture of LSRSC. Results demonstrated that the optimal mixture of LSRSC has a water/cement ratio of 0.42, cement quantity of 390 kg, a volume fraction of lead slag aggregate of 60% and silica fume-cement ratio of 0.15.
کلید واژگان :Concrete; Lead slag; Radiation shield; Design of experiment; Grey-Taguchi method
ارزش ریالی : 300000 ریال
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