Discussions: 1. What is importance of the porosity calculation for refractories? 2. What is importance of the water absorption calculation for refractories? 3. When was the refractory sample having high porosity? Explain it? 4. Affecting the following properties with porosity: mechanical resistance, chemical resistance, thermal shock and thermal insulation, mineral and chemical composition and forming pressure. Explain that? What is effect of porosity on these properties? Explain that? 5. What is effect of porosity on kind of bricks? 6. What is the kind of bricks? Explain the properties of each kind and its application and what is effect of porosity on it? Is increased or reduced? 7.What is considered the porosity test? Is it physical or mechanical test? And why?
Extracted text: Discussions: 1. What is importance of the porosity calculation for refractories? 2. What is importance of the water absorption calculation for refractories? 3. When was the refractory sample having high porosity? Explain it? 4. Affecting the following properties with porosity: mechanical resistance, chemical resistance, thermal shock and thermal insulation, mineral and chemical composition and forming pressure. Explain that? What is effect of porosity on these properties? Explain that? 5. What is effect of porosity on kind of bricks? 6. What is the kind of bricks? Explain the properties of each kind and its application and what is effect of porosity on it? Is increased or reduced? 7.What is considered the porosity test? Is it physical or mechanical test? And why?