Pouring new slab against exisiting slab

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Old 11-14-13, 09:39 AM
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Pouring new slab against exisiting slab

I'm putting new steps in for my porch but the previous steps just landed in the dirt and I want to land them on concrete. directly in front of the steps is the concrete sidewalk area and so I want to bring the concrete about two feet closer to the porch for the steps.

When pouring the concrete do I need a buffer/baffle/expansion thingamabob between the new concrete and the old? It will be about 6' by 2' and ~6 inches thick.

Also, I'm using fiber reinforced concrete mix- would you recommend using rebar still? It 'says' no rebar needed with the fiber...
 
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Old 11-14-13, 10:56 AM
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At 6" thick I don't think rebar will be needed in addition to the fiber. Any reason why you are going so thick? Most walkways are 3 1/2 to 4" thick.

I would install a expansion strip between your steps and the new slabs to protect them from each other as they expand and contract.
 
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