Konferans bildirisi Açık Erişim

EFFECTS OF STEEL SECTOR WASTES TO CEMENT PRODUCTION

2017    Arife Kübra DEMİRBAŞ; Sinem Çevik; Tuğba MUTUK; Başak Mesci OKTAY; Cenk DEMİRBAŞ

The waste production in manufacturing industry is made of approximately %60 of metal industry in Turkey. It is reported that the amount of slag generated from this sector is about 5 million tons per year and 87% of these wastes are kept at the enterprises, 12% are stored regularly and 1% is recycled.
The environmental pollution caused by leaving these wastes from the metal industry for many years without control is very harmful to nature. In order to reduce these losses and to recycle these wastes, many institutions, especially the state, have started to work.
Scale is the one of the slags from metal industry. Scale is the iron oxide layer which is formed as a result of oxidation during annealing in the rolling mills of iron-steel plants, continuous casting plants and steel material surfaces coming from annealing furnaces. It contains components such as silicon oxide, calcium oxide, alumina and iron oxide. It is used in the construction of heavy concrete due to these metals in the scale, and this concrete is used in nuclear plants, the walls of rooms exposed to radiation in hospitals, etc. Scale and similar slags are used as building aggregates in many applications such as asphalt concrete, portland cement concrete, road filler, dirt road, walking road. These and similar studies have increased the amount of waste recovered over the years. Significant contributions are made to this economical economy and technology of this country.
Taking these studies into account, we conducted an experimental study to improve the recycling of the scale and to better understand its contribution and benefits in the cement-concrete industry. In the work we have done, the scale wastes were mixed with the cement at certain ratios and the concrete sample was cast with the mixture. Mechanical analyzes of these samples were investigated.