نوع مقاله : مقاله پژوهشی
1 گروه عمران- دانشگاه آزاد اسلامی واحد استهبان-استهبان- ایران
2 گروه عمران - دانشگاهع آزاد اسلامی واحد استهبان- ایران
عنوان مقاله [English]
One of the most important issues in the design of concrete structures that are exposed to water is the reduction of permeability and water proofing. The innovation of this research is using iron concentrate as an inexpensive material for reduction of permeability. To determine permeability coefficient and compressive strength of concrete, 140 cubic samples with 7 mixing plan and different concentrate percentage have been studied in the laboratory. The results showed that the addition of concentrate has a significant effect on permeability reduction where for 5% to 10% concentrate, the permeability coefficient decreases from 78.76% to 96.44%, respectively. On the other hand, the compressive strength of concrete decreases with increasing concentrate. A comparison between the compressive strength and permeability diagrams showed that the optimal value of concentrate is between 5 to 15% by weight of cement. The failure results of the samples show that the percentage of concentrate has no effect on the failure of concrete.