I do concrete for a living and it looks like the discolored section of floor didn't get sealed, the crazing cracks isn't a structural issue it's only a visual issue. Usually happens if the concrete gets temperature shocked in the first couple hours after it's finished, say if the concrete was...
with using regular 2 inch dobie bricks it can put your rebar to high up if your grade isnt spot on and might poke threw the surface which is bad. if your using using #4 rebar that put the top of your rebar at approximately 3 inches. if your doing a 5 inch thick floor you can get away with 2...
all that info is spot on that llwillysfan posted. only thing thay i disagree with is the sawcutting timing. yes you can cut same day if you burn the floor in. and is best practice but if the floor isnt burnt in then you need to wait atleast a few hours depending on conditions, also you will...
i'm a concrete finisher by trade so i have used trowelable products before. i would look into some ardex products if you want the patch and surface to last. it's a bit more exspensive then most but it sticks to practically anything id get a bag of ardex feather finish if there is random deep...
x2 with it being a cheap price. usually 5 to 10 bucks a square foot is were most bids would fall into. but the bigger the project you can still make money doing it slightly cheaper. if its a fairly small job then the price will be more per sq. ft. since you cant hardly make money doing it for...