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Re: Fly Ash

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Gentlemen
Fly ash is a Pozzolana. It has a  long  trusted history of uses as:
- as an agent for better workability
- as a water reducer agent in concrete
- as an agent to replace Cement partially, so as to effect cost
 economics of concrete.
- as an agent to control temperature cracks in mass concrete, resulting
 out of exothermic reaction due to hydration process.
- as an agent to fight against sulphates & chlorides in soil
- so on & so forth.
My question is:
     - why you want to use fly ash in light weight concrete? In simple
       what is the objective of using it?
     - Is the light weight concrete STRUCTURAL or NON-STRUCTURAL?
Unless this is answered, it will be difficult to defend your case for use of fly ash in the concrete perse.

From: Todd Hill <thill(--nospam--at)tkarch.com>
Reply-To: seaint(--nospam--at)seaint.org
To: "SEAINT (E-mail)" <SEAINT(--nospam--at)SEAINT.ORG>
Subject: Fly Ash
Date: Wed, 13 Jun 2001 11:49:57 -0500

Is there any reason why fly ash should not be used in Lightweight concrete?
We've had a colored concrete manufacturer say their product won't work with
fly ash.
But, I was wondering if there was another reason.

Todd Hill, P.E.
TK Architects, Inc.
816-842-7552 ext. 233


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