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15 Feb ’12
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the surface bonding should have a pretty minor impact on strength
6 Oct ’15
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icanreachit said
Will you be able to pour all the way to the bottom course if you use mortar?
Yes, all the way to the bottom...I did it with our 1st house and those were 8inch block...we are using 10inch this time. Worked well with the 8s, so 10s should be no problem. It's a pretty loose/wet mix with pea gravel (round and smooth), we will add the fiber glass (like $50 for a 8-10 yard truck delivery). Not sure if we will have a long vibrator on hand for the wall cores, but we will be place vertical rebar ever 4ft and can shake them up a bit if we need to (my last experience doing this we had to actually hammer the rebar in since the cores filled so well. Oh yeah, and for a few bucks more the batch plant will add some kind of plastizer that is supposed to make the mix flow better...don't see the need to spend the money on that.
6 Oct ’15
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KVR said
the surface bonding should have a pretty minor impact on strength
you mean...because we are mortaring and the fibers won't span the mortar joints well?
...we were going to use the surface bonding as a 'finish coat/parge' then paint the inside and water shield then wrap rigid around the outside.
...around here they normally just parge with a sanded mortar mix...I think the surface bonding will be nicer and I am willing to pay up for that...plus the surface bonding for a parge will have some added water resistance/protection.
...sound right/good?
15 Feb ’12
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from my understanding pretty much, the sbc works by bridging the two blocks together, with the mortar joint you are loosing that bridge
6 Oct ’15
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...that is my understanding too...I like it's durability though and the defense against hydrostatic pressure. Don't anticipate and pressure issues with all the gravel base, back filling, filter fabric, French drain to day light and clean outs...plus good grading.
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