An epidemic occurs when an infectious disease spreads rapidly to many people. For example, in 2003, the severe acute respiratory syndrome (SARS) epidemic took the lives of nearly 800 people worldwide. disease outbreak happens when a disease occurs in greater numbers than expected in a community or region or during a season. An outbreak may occur in one community or even extend to several countries. It can last from days to years. Sometimes a single case of a contagious disease is considered an outbreak.
Quick Answer. Bitumen is primarily used to pave roads. It is a brown or black mixture of hydrocarbons, which is derived from petroleum. The consistency of bitumen varies from viscous to solid, and in its solid form, it is commonly known as asphalt. Continue Reading.
asphalt. Around 950 billion tonnes of asphalt is currently incorporated in the European road network. Asphalt is the road construction material of choice, due to its comfortable and safe ride, its value for money, speed of installation, flexibility in construction , performance and maintenance combined with excellent durability . Asphalt has a key further attribute in that it can be 100% recycled without downgrading its functionality, and is currently the most recycled construction material in the world.