Page - 930 - in Book of Full Papers - Symposium Hydro Engineering

LABORATORY STUDY OF THE EFFECT OF RECYCLED FILLERS FROM COKING AND IRON CONCENTRATE FACTORIES ON THE ROLLER COMPACTED CONCRETE PROPERTIES IN DAMS* Jaber Mahmoudi MSc of water structure engineering, Laboratory manager and QC at Mana Construction Company Faeze Yazdi MSc Of civil engineering, Supervisor of Civil and Chief Technical Officer of Barsoo Engineering Co. IRAN ABSTRACT This study presents mechanical and durability aspects of using different waste fillers including Iron powder, Iron concentrate, Coal and Coke Powder, which cannot be reused at industry process. (samples from different parts of the Jalalabad Iron Ore Concentrate Plant and Zarand Coking Plant, Kerman, Iran) as well as mineral powder filler as a control sample to replace 3% and 6% of coarse and fine natural aggregates content in RCC combination. Absorption, compressive strength, workability and non-segregation of grains investigated for the concrete specimens. The experimental results showed that RCCs of iron ore- powder filler contents with 6% of the weight of coarse and fine natural aggregates had higher values of 28 days compressive strength and minimum 24-hour water absorption about 2.22%. Generally, the fillers of iron ore concentrate factory including iron ore filler and concentrate filler have better results in improving the mechanical and transitional properties of roller concrete, due to rounding of aggregates, comparing by the case of carbonaceous compounds extracted from the coking plant, including Coke and coal fillers. In addition to that, using this type of waste in concrete may has more environmentally efficient, because this helps to remove some parts of wastes and protects the environment. * Roller Compacted Concrete Dams (RCC Dams) 930