What is asphalt? .

Asphalt is used in road construction. Asphalt is a black viscous substance. Melts with heat and then hardens when frozen. Road strength depends on asphalt. Asphalt is an organic fluid that escapes from the soil. In ancient times, in Greece, Egypt, and Babylon, asphalt was used to protect walls from rain. Natural asphalt is made up of the remains of marine organisms that have died in the bottom of the ocean floor.

Natural oil, coal, etc. are formed by the process of thousands of years of tremendous pressure and heat in the earth's crust. It is made of asphalt in the same way. The movement of the earth's plates and earthquakes bring it to the surface of the earth. Canada has large reserves of asphalt. Asphalt is also obtained from crude. Asphalt is a foul-smelling substance. In addition to road construction, asphalt is used to make the wooden walls of ships and vessels waterproof.