مشروع البحث: استخدام مخلفات السيراميك كبديل جزئي للركام الخشن لإنتاج خرسانة مقاومة للحريق
تحميل...
المساهمين
الممولين
رقم التعريف
18-1
الباحث
محمد أحمد البشير الأبيض
الوصف
This experimental study aims to develop fire-resistant concrete using ceramic waste as a partial replacement for coarse aggregate, addressing sustainable disposal issues while improving concrete's fire resistance performance. The laboratory investigation involved manufacturing and testing 270 concrete cubes (15×15×15 cm) with five different mixes using ceramic waste replacement ratios (0%, 10%, 15%, 20%, 25%). Samples were exposed to five different temperatures (28, 300, 500, 700, 900°C) using both air and water cooling methods, and tested at ages of 7 and 28 days. Results showed a gradual decrease in compressive strength with increasing temperature, with reductions ranging from 7-9% at 300°C18-20% at 500°C, 31-36% at 700°C, and 39-42% at 900°C. The mixes with 20-25% replacement ratios demonstrated superior performance, showing 12.5% improvement in compressive strength at room temperature and 3.6% increase in modulus of elasticity compared to the reference mix, Ceramic-containing mixes also showed better resistance to thermal shock during rapid water cooling. The study recommends using 20-25% replacement ratios in structures exposed to high temperatures,with wet curing applied for 28 days .
Keywords: Fire-resistant concrete, Ceramic waste, Coarse aggregate, High-temperature resistance, Concrete mechanical properties, Waste recycling, Sustainable construction
الكلمات الدالة
هندسة مدنية