نوع مقاله : مقاله پژوهشی
نویسندگان
1 استادیار، گروه مهندسی عمران، واحد اصفهان (خوراسگان)، دانشگاه آزاد اسلامی، اصفهان، ایران.
2 استادیار، گروه مهندسی عمران، دانشگاه علم و فناوری مازندران، بهشهر، ایران.
3 دانش آموخته کارشناسی ارشد، گروه مهندسی عمران، اصفهان (خوراسگان)، دانشگاه آزاد اسلامی، اصفهان، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Designing self-compacting lightweight concrete allows for simultaneous utilization of the benefits of lightweight aggregates and the properties of self-compacting concrete. Rapid growth of construction industry has led to an increased demand for building materials such as cement and natural aggregates, highlighting the necessity of utilizing industrial waste materials, such as ceramic and tile waste, as sustainable alternatives. Therefore, in this research, by altering the aggregates and incorporating lightweight perlite and waste ceramics, an effort was made to evaluate the physical, mechanical, and durability properties of lightweight self-compacting concrete. The mix design for these tests was based on both Fuller and gap grading. Results showed that all mix designs fell within the acceptable range of slump flow (55 to 85 cm). In terms of mechanical properties, the NNM mix, containing both coarse and fine natural aggregates based on gap grading, exhibited the highest compressive (34.6 and 37.2 MPa), tensile (4.8 and 5.5 MPa), and flexural (5.6 and 6.6 MPa) strengths at 28 and 90 days, respectively. Regarding durability, the NNF mix, based on the Fuller grading, displayed the lowest water absorption at 1.9% and 1.1%, the highest electrical resistivity at 30.1 and 57.9 kiloohm-centimeter, and the lowest penetration depth at 11 and 10 millimeters at 28 and 90 days, respectively. In conclusion, when comparing mix designs based on Fuller and gap grading at 28 and 90 days, it was evident that, in terms of mechanical properties, the coarser gap grading performed better. However, in terms of durability, the finer Fuller grading exhibited better performance compared to the gap grading.
کلیدواژه‌ها [English]
)