I like to repair my brick thread steps. The repair will have to be a complete removal of bricks as all joints are deteriorated beyond simple pointing repair. The base looks solid.
Instead of reusing the bricks, I like to make concrete threads that resemble limestone threads. I only need 4 pieces. Each would be about 3 feet long, 10 inches wide and 2 inches thick. I would put 2 rebars in each for extra strength. Made this way, would it withstand the wetting and freeze/thaw cycles of NJ winter, as the limestone can? I know the sidewalks are 4 inches, but I don’t know if 2 inch thickness would be durable. I considered cast in place but I want some overhang and chipped edges, and I think I can control the riser heights better this way. The present risers do not meet code.
I also like to expose the aggregate on the surface to match the existing sidewalk. How do I do this? Do I just wash the surface after the concrete is set (an hour later? ) or is this done with acid wash? How do I do this without making the surface weak? Thank you in advance.