[Ferro List] Fwd: micro-cracking, fibers

[Peter Payne]

Thanks for the reminder Marc.
What are the simplest ways of making a slightly expansive mix?
Thanks
Peter

Marc de Piolenc wrote:
> Dear listmates,
> snip

> In the very few situations where microcracking is not permissible, the
> solution is to use a slightly expansive mortar mix; this will preload
> the steel reinforcement in tension and even microcracking will not
> occur until the tensile preload is exceeded. A mortar that shrinks
> when curing is not acceptable in any ferro application, for obvious
> reasons.
>
> Marc de Piolenc
> Iligan City, Philippines
>
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