@vt.physics: Hot & Sticky: The Magic of Polymer Modified Bitumen in Action The dispenser releases each blob of hot bitumen glue so it lands perfectly in place, even as the truck keeps moving. Polymer modified bitumen, a petroleum based binder, becomes a thick, syrupy liquid when heated to about 200 degrees Celsius, allowing it to spread and form a strong adhesive layer. As it cools, the long polymer chains inside reentangle and harden, creating a tough bond. Right after that, a worker drops reflective road studs onto the hot adhesive before it sets. Once the bitumen solidifies, its weather resistant structure locks the reflectors firmly in place, ready to withstand heavy traffic, freezing nights, and scorching summer heat. #physics #science #chemistry #engineering #facts

Gardengnome :

Yes, it looks so challenging.It must have taken him a whole seven minutes to perfect it

vt.physics :

*bitumen 😅

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