Aci self consolidating concrete
“External mechanical vibration using a hammer, reciprocating saw, or orbital sander did not significantly improve the consolidation of concrete in ICF walls…” the report states.
On the medium slump panels, external vibration scored slightly better, but not nearly as well as those that used an internal vibrator.
In every case, walls filled with low-slump mixes had poor consolidation, regardless of the technique used.
Self consolidating concrete (SCC) is highly flowable, non segregating concrete that can spread into place, fill the formwork, and encapsulate the reinforcement without any mechanical consolidation (ACI 237).
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Even more regrettably, these sub-par methods are still being used by some contractors.
Review an up-to-date installation manual or talk to the technical director at your preferred ICF company to get their latest recommendations about consolidation techniques.The information in this document is expected to inform concrete producers, users, and specifiers of SCC of known practices and processes.