Signs and Symptoms. Because the signs of AS can be similar to those of other behavioral problems, it's best to let a doctor or other health professional evaluate a child's symptoms. Many kids are diagnosed with attention deficit hyperactivity disorder (ADHD) before a diagnosis of AS is made later.
Rubber begins to melt at approximately 180 degrees Celsius. At low temperatures, around 5 C to 6 C, there is a risk that rubber hardens because of crystallization. The optimum temperature for rubber is 20 C.
Depending on the composite of the concrete material, it can melt at  different temperatures. When concrete reaches a high enough  temperature such as more than 1000 degrees â¦ Celsius, it can crumble  like sugar.he melting will start with the material that has the lowest temperature melting point unless you allow the system to take a long time and react into other solids first, of course. A ballpark guess of 800-1000Â°C for melting is what I would assume, for various reasons.