What questions might a panelist ask about a final project proposal regarding scrap tires in concrete, and what would be the answers?

Here are some potential questions a panelist might ask about your final project proposal, along with concise answers based on the provided text: Question 1:* What is the primary environmental problem your research aims to address? Answer: The primary problem is the serious environmental pollution caused by the accumulation of scrap tires*, which decompose at a very slow rate. Question 2:* How did you incorporate powdered rubber into the concrete mixtures, and what methods were used for reinforcement? Answer: Powdered rubber was incorporated as a partial replacement for both sand and cement. Reinforcement was done using two physical methods (silica foam and cement coating) and three chemical methods (sodium hydroxide, sulfuric acid, and potassium permanganate*). Question 3:* What was the general effect of adding powdered rubber on the compressive strength of the concrete? Answer: Generally, the addition of powdered rubber reduced the compressive strength of the concrete, showing an almost inverse proportional* relationship with the amount of rubber added. Question 4:* Between replacing sand and replacing cement with powdered rubber, which approach showed better results for compressive strength? Answer: Powdered rubber replacement for sand showed better results* in terms of compressive strength compared to cement replacement. Question 5:* What impact did the addition of rubber have on the thermal properties of the concrete? Answer: A higher amount of rubber in the concrete resulted in less heat conduction, indicating that it can be effective for energy saving* due to improved thermal insulation. Question 6:* What was a significant challenge encountered when mixing rubber with concrete, and how did reinforcement methods help? Answer: A significant challenge was the hydrophobicity of rubber, which made it difficult to mix well with other concrete components. The reinforcement methods were effective in making the rubber surface hydrophilic*, improving its combination with other ingredients. Send me the next one 📸