I wish I had watched this video before repairing a crack above the window at my house. I should have used some of that lightweight repair mortar. Life would have been much easier. Anyway, now I know for the future.
Due to following this process the self weight of structure will be increased by providing the extra rainforsement and reinforcement also providing also deficult. It's a not engineering technic. Also in this process they don't give clarity about we make sure how much length reinforcement bar driven into the wall .
That's called P.A.M. Our company bought one 8 years ago and it works wonders for chipping out concrete overhead. Requires compressed air. It's good for doing large open areas. Cost was around 15k.