What is the ruling on selling the product of asphalt scraping and benefiting from its price, knowing that it is considered waste and was supposed to be disposed of by throwing it in public landfills?

The waste from road scraping is public property belonging to the state. If the state wants it for itself or for a specific entity, then it is not permissible to take it or benefit from it through sale or exploitation, as that would be consuming people's wealth unlawfully. However, if the state does not want it for itself and has not designated it for a specific entity, then it belongs to whoever gets to it first, and in that case, there is no harm in benefiting from it.