Concrete over Concrete

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  #1  
Old 01-31-14, 10:02 AM
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Concrete over Concrete

I'm fixing/remodeling a bathroom in an old basement (1930's or so). There are concrete floors and an old concrete shower pan w/ a drain. The shower is no longer operable as the drain is collapsed somewhere outside. I am looking to pour concrete to fill in the old pan and just have a raised section on that part of the bathroom. Is there anything tricky about pouring new concrete over the old stuff and keeping it all flush?
 
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Old 02-01-14, 06:58 AM
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One issue is the bonding, of the new to the old. How thick is will the new pour be? Is there no way to repair the drain?
 
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Old 02-03-14, 07:29 AM
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The home is on a slab so that makes it a little more difficult I guess. I thought about busting it out and tying it in to the toilet drain but even that was more that I felt like taking on. I'm sure I could eventually figure out where the blockage was if it's outside and repair it but I'm not all that interested in that. I'm fine with a working sink and toilet and could use the extra space where the shower was for storage anyway. I think there is some kind of adhesive that you paint on old concrete to help it bond to new so maybe that'll be the route I take.
 
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Old 02-03-14, 08:07 AM
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Yes, bonding agents exist. That might be what you need.
 
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