You will need existing floor to be clean and dry. Layering concrete like this is called a cold joint. Concrete does not like cold joints. That I why big jobs like the cn tower and Hoover dam are all one pour basically.
If you have to do cold joints, clean base floor, rent a sacrifice tool at a rent shop, rough up the floor as much as possible, clean all dirt and dust again, cover floor with a bonding agent from a box store, pour new concrete. Over 2" is recommended.
Another way to get it to hold is to drill holes into base floor or even put various concrete screws in base floor with just the heads sticking up a little bit so new concrete can grab.
Yes you can fall and get badly hurt and it ruins the studs.
Cement floor is hard... if u fall... u get hurt... badly... real bad... If it is more than 100 ft drop... U DIE!
more badly, most badly
worse, worst
yes badly is an adverb because badly describes how we perform.
more badly
Badly
more badly
The adverb "well" is the usual opposite of the adverb "badly." If "badly" is used to mean "extremely or greatly" the opposite could be "slightly." E.g. He was badly bruised./He was slightly bruised.
"Badly" is an adverb, not a noun. Can't be a possessive noun, unless your name is Mr. Badly, in which case it's "Mr. Badly's car".
Badly very badly
badly - schlecht.