History Of Modified Bitumen :
Modified polymer bitumen was first used in the roofing industry and later in road construction. In 1965, polypropylene (APP), an by-product of the production of isotactic propylene (IPP), was first used to modify roofing bitumen in Italy. Until the early 1970s, SBS was not widely used in Europe; While in 1978, Americans began to make extensive use of bitumen in roofing. In 1980, the first American manufacturer of polymer modified bitumen (PMB) was launched. The invention of bitumen-based components and isobutylene was introduced in the early 1940s. After that, especially after the introduction of SBS for bitumen modification, many inventions were introduced all over the world.
Rubberized Bitumen :
Just as researchers used different additives to optimize the behavior of concrete, they also thought of similar additives for bitumen. Studies have shown that cement and concrete additives sometimes work well on asphalt and bitumen. Therefore, fillers are widely used in modifying the properties of bitumen. One of the most important concrete additives that has found its place in bitumen correction today is rubber powder. The researchers used rubber powder to hit two targets with an arrow. First, they found a good way to use used and worn tires, and second, they got great results from the addition of this powder and significantly improved the working mechanism of asphalt.