Non-shrink grout is a chemical mixed cement... It give better Compressive Strength compared against OPC....

It have more fine particle combination with silica and etc material..

Thanks for the detail explanation bro..

Ordinary Portland Cement = Normal Cement

Better to use grouting cement.. Anyhow u need to ensure all your piping works is well done prior casting with grouting cement..

Btw, seemed like you have disturbed the load bearing wall..

For your case, that is a Poly Pipe with PN (Pressure Rating).. I not sure how your plumber solve the problem but in real fact you are required to cut-off the damage portion and rejoin it with socket..