Forum Link: https://forums.factorio.com/viewtopic.php?f=144&t=14419

Long description:

This mod adds to the game two new pieces of the rail tracks, that match concrete floor. They can be researched when rail and concrete technologies are completed and it costs 50 green and 50 red science.
The recipe is similar to the one of the regular rails, but stone is changed to concrete so they are slightly more expencive. Since they are covered by tough concrete slab, they are two times stronger.

New pieces perfectly work along with vanilla rails and they are fully interchangable. They don't change anything in the train behaviour such as speed or pathfinding, despite that they look sexy and every train should dream to ride on them.

Credits:

hitzu - graphics
Xyfi - coding and stuff (Thank you!)

Known Issues:

The crossing between concreted rails and vanilla ones often looks terrible. For the best aesthetical results don't mix them.

Changelog:

0.1.6: german locale, ported to 0.15
0.1.5: probably fixed russian locale issue
0.1.4: ported to 0.15