نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار، دانشکده مهندسی عمران، دانشگاه آزاد اسلامی، شیراز، ایران
2 مربی، گروه مهندسی عمران ، دانشکده مهندسی، دانشگاه فنی و حرفهای، تهران، ایران
3 مربی، دانشکده معماری و شهرسازی، دانشگاه فنی و حرفه ای، تهران، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Today, the issue of environment in Iran has become one of the critical problems. The production of pollutants and the release of carbon dioxide gas in the air and on the other hand the production of garbage and construction waste in the past years have caused a lot of damage to the environment and imposed a lot of costs on the municipalities. According to statistics, cement factories are the second producer of CO2 gas, which accounts for more than 5% of all pollution in the world. Also, the high volume of construction waste production due to the destruction of dilapidated buildings is very high. Therefore, recycling construction materials can be a good way to reduce construction costs and prevent environmental degradation. In this research, with the aim of producing environmentally friendly concrete to reduce the use of cement, reduce costs, recycle materials and reduce environmental pollution, the behavior of concrete was investigated using waste brick waste. For this purpose, waste brick from the destruction of the building was collected and pulverized to the size of 150 microns and used in weight amounts of 5%, 10%, 15% and 20% instead of part of cement in concrete. Further, slump tests, compressive strength, water absorption and freezing durability were conducted to investigate the behavior of this concrete. Also, to determine the chemical structure of the recycled brick powder, an XRD test was performed and an XRF test was performed to identify its phases. The results of this research showed that the use of 5% recycled brick powder in concrete only reduces the 90-day compressive strength by 2.4%, and its use in non-structural elements is justified.
کلیدواژهها [English]