نوع مقاله : مقاله پژوهشی
نویسندگان
دانشگاه تربیت دبیر شهید رجایی
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The development of multifunctional concrete with structural health monitoring capabilities requires understanding the complex interactions between various additives. This study investigates the simultaneous effects of ground granulated blast furnace slag (GGBFS), halloysite nanotubes (HNTs), silica fume (SF), and water-to-binder ratio (W/B) on the mechanical and electrical properties of cementitious composites. The Taguchi experimental design method with an L₈ orthogonal array was employed. Four factors at two levels were examined: GGBFS (10 and 20%), HNTs (5 and 10%), SF (0 and 7%), and W/B (0.35 and 0.40). Compressive strength was measured at 7, 28, 90, 180, and 360 days, while electrical resistivity was measured at 28, 90, 180, and 360 days. Results indicated that SF, with a 42% contribution, was the most influential factor in increasing electrical resistivity, whereas GGBFS exhibited an inverse effect. Regarding mechanical properties, HNTs dominated at early ages (38% contribution at 7 days), while GGBFS prevailed at later ages (35% contribution at 180 days). The optimal mixture comprising 10% GGBFS, 5% HNT, 7% SF, and W/B=0.35 was identified as the balance point between mechanical and electrical properties.
کلیدواژهها [English]
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