My hip bath drain is clogged next to sand and possibly concrete particle.? We hired a contractor to pour concrete in our vault to level...

We hired a contractor to pour concrete in our vault to level the floor this week, he finished the profession okay. However we found out the next morning the tub in the underground store is blocked. The contractor said they used the bathtub to procure water but he claims no concrete should own fallen into the drain. I found lots of sand on bathroom floor and surrounded by the bathtub as powerfully..

My husband and I tried draino but it doesn't work... Now i'm desperate...We just spent a fortune to fix the unlevelled crypt, and now I necessitate to rip off the tub?? What do I do? Is there anything I can buy to desolve the sand / concrete??

Please relieve me.... thanks a million...
Use your shop vac and clean it out.


Pour a gallon of muriatic acerbic and let the dampen run for a while after letting it sit for a for minutes and if that doesn't do it you might need to run a snake (rent one from home depot) through your outside cleanout--a locknut plug hat on top of the basic drain pipe ussually located in your patio somewhere you might need to trace your pipe string that leaves you house.

The cleanout could be slightly buried under the grass somewhere. Always a right idea to know where on earth this is located. Good luck and ALWAYS monitor contractors!
Answers:    Pour a quart of muriatic bitter into the drain.
Let it sit for a few hours.
Run lots of water.
This will attack the lime within the concrete.
You can then plunge the drain and loosen up the clog.