Too much CO2 is released during cement production. In many researches, the use of natural or recycled compounds plays an important role in the cement composition. The use of these components contributes both to reducing the amount of waste and to protecting the environment in nature. It is possible to produce an environmentally friendly concrete, thanks to its being a fly ash thermal power plant waste and its use as mineral additive in terms of its composition. In this study, it is aimed to produce impermeable concretes with the use of C type fly ash as substitutes for cement in concrete composition in substitution rates of 10 %, 30 % and 50 %. In order to reduce the permeability of concrete in this direction, as a result of grinding the fly ash in the ball mill for 0, 10, 20, 30, 45 and 60 minutes, concrete samples were prepared with and without admixture (Reference). Capillarity test was performed to determine the permeability at the end of cure periods of 28 and 90 days on concrete samples. According to the results obtained at the end of 28 days, the best impermeability was achieved in the mixture with 50 % fly ash replacement and 60 minutes grinding time. In 90 days, the best impermeability was obtained in the mixture with 30 % fly ash replacement and 0 minutes of grinding time. As a result, it was seen that permeability decreased with increasing thinness and substitution rate of fly ash in concrete composition.

Various studies on the disposal or storage of the wastes generated due to mining activities have been carried out until today. With the developing technology, the use of alternative products instead of aggregates in Composite and the effect of fiber addition were investigated. The most common of these studies is the bending strength tests on the beam sample. In this study, solid wastes generated by mining operations were used instead of aggregate used in Composite. Beam samples were poured with the dimensions of 40×40×160 mm by adding 4-6 kg/m3 polypropylene fiber to the mixture obtained by using these solid wastes; then, its effects on ultrasonic pulse velocity test, tensile test, and compressive strength tests were conducted. According to the results of these tests, it was found that the fibers had a positive effect on compressive strength and bending strength. Also, it was found that water absorption rates and densities did not have an effect, while the ultrasonic pulse velocity decreased with increasing fiber content.

Bu çalışmanın amacı; kurşun-çinko maden işletmesinden elde edilen artık kayaçlardan (Pasa) üretilen betonların fiziksel ve mekanik özelliklerinin araştırılmasıdır. Bu kapsamda işletmeden elde edilen artık kayaçların ilk olarak fiziksel, kimyasal, mineroloji-petrografik özellikleri belirlenmiştir. Artık kayaçlardan elde edilen agrega ve kireçtaşı agregaları ile %25, %50 ve %75 oranında yer değiştirilerek C16/20, C25/30 ve C35/45 beton dayanım sınıflarında örnekler hazırlanmıştır. Hazırlanan beton örneklerin fiziksel ve mekanik özellikleri belirlenmiştir. Sonuç olarak, kurşun-çinko maden artığı kayaçların beton agregası olarak kullanıldığında, kireçtaşına göre beton örneklerin görünür boşluk oranı ve su emme değerleri azalırken, yoğunluğu artmıştır. Fiziksel özelliklerdeki olumlu etkiye bağlı olarak, basınç ve eğilme dayanımı da artmaktadır.