[TowerTalk] Concrete Fiber

[Orcena Lyle]

I haven't had concrete fiber in a tower base but it is in my new driveway.
A tree fell on my new garage last June, meaning a roof and wall replacement
(one wall).  So the new fiber driveway had a dumpster, a storage unit, heavy
equipment and trucks on it, the sort of things that cracked and broke the
old driveway (unreinforced with anything that I know of).  No cracks in the
new driveway, it still looks as good as it did.  Based on my experience with
fiber concrete, I'd say go for it.

73 de Orcy WØQT

----- Original Message -----
From: "Doug Rehman" <rehman at surveil.com>
To: <towertalk at contesting.com>
Sent: Monday, October 17, 2005 9:53 AM
Subject: [TowerTalk] Concrete Fiber


> I'm about to order concrete for a tower base. The concrete company offers
> fiber reinforcement mixed into the concrete for about $10 per cubic yard.
> I've researched concrete fiber and found nothing on Tower Pro and only one
> comment here by K7LXC saying it wasn't needed.
>
> It appears that the fiber adds 5-10% additional compressive strength and
> about results in a 50% reduction in cracking. (it is touted as a
replacement
> for embedded steel mesh in slabs.)
>
> I have been unable to find any literature indicating that it is
> inappropriate for tower bases or even any negative consequences of its use
> for such. For less than a 10% increase in the cost of the concrete, it
seems
> like it may be worth it- even if only for a belt and suspenders approach.
>
> Does anyone have any experience with concrete fiber use in tower
> foundations?
>
> Tnx,
> Doug
> K4DDR
>
>
>
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