نوع مقاله : مقاله پژوهشی
موضوعات
عنوان مقاله English
نویسندگان English
Color is very important in architecture and urban planning. You can see the use of different colors in urban planning such as building facades, streets, sidewalks. In addition to beauty and color quality, colored concrete must be resistant to adverse weather conditions. Okhra is a type of mineral soil that has a large amount of iron oxide and is available in red to brown colors. In this research, to change the color of concrete, white cement and okhra powder were used in different weight ratios of 2.5%, 5%, 7.5% and 10%. Then, to check the strength and durability of concrete, tests of compressive strength, tensile strength and freezing durability of concrete were measured. The results of this research showed that okhra has a very high coloring property and adding at least 5% of it replacing cement completely changes the color of concrete. In the following, the 90-day compressive strength of samples with 2.5%, 5%, 7.5% and 10% ocher increased by 5.9%, 11.5%, 15.6%, and 18.5%, respectively. The results of the freezing test of the samples showed that the use of okhra will not damage the concrete against freezing.
کلیدواژهها English