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Posted by on September 30, 2007, 5:42 am
wrote:
> I am doing a small study for shrinkage reduction in Grout(mortars).
>
> A grout is used (for example) as a 'concrete' base floor for putting under
> heavy machinery. To keep the heavy equipment in contact with the grout after
> hardening of the material, the grout should show no shrinkage.
> You can read a very little more about the background of this
at:http://stinet.dtic.mil/oai/oai?&verb...er=AD0806962
>
> Normally a metal like Aluminum is added to the grout to compensate for
> shrinkage (Al produces gas that compensates for the shrinkage). This is a
> very old method.
>
> Later, epoxy grouts were developed. These are NOT the ones I am interested
> in.
>
> But I would like to know more on non-metallic, high-strength structural
> cementeous grouts. These are based on 'petroleum coke' type additives (added
> to normal sand/cement mixtures). Can somebody tell me more on the mechanisms
> (chemical / physical) that are involved in this? The system is not based on
> gas-generating but on 'an air release system' (as one manufacturer describes
> it).
>
> Any info or links on this?
>
> Thanks,
> Ron
just add wood glue
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