John,

I have long argued that the method does not yield highly reproducible results for mortars, but yet you see it referenced over and over in mortar studies and histopresto grad students think it's g-d's revealed word. What can you recommend as a better method?

I have also long argued that because of the lack of inTERlaboratory precision, it is virtually meaningless to compare various manufacturer's product data sheets. The exception would be studies conducted in the same lab under the same conditions, because the inTRAlaboratory precision is a hell of a lot better.

Edison Coatings, Inc. 
Michael P. Edison 
President 
3 Northwest Drive 
Plainville, CT 06062 
Phone: (860) 747-2220 or (800)341-6621 
Fax: (860)747-2280 
Internet: www.edisoncoatings.com 
         www.rosendalecement.net 
E-Mail: [log in to unmask]

---------- Original Message ----------- 
From: John Walsh <[log in to unmask]> 
To: [log in to unmask] 
Sent: Fri, 17 Apr 2009 14:44:13 -0400 
Subject: Re: [BP] Mortar

> Leland, 
> I would not use that number with any confidence.  The standard is not 
> written for mortar and the reported precision and bias may not apply.   
> To my knowledge, there has been no interlaboratory testing using E 96 
> for mortar or brick. John 
> 
> -----Original Message----- 
> From: The listserv where the buildings do the talking 
> [mailto:[log in to unmask]] On Behalf Of Leland Torrence 
> Sent: Friday, April 17, 2009 8:03 AM 
> To: [log in to unmask] 
> Subject: [BP] Mortar 
> 
> Mike, 
> Is it true that ASTM E-96 allows for a 76% acceptable variance for testing 
> moisture vapor transmission? 
> Best, 
> Leland 
> 
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------- End of Original Message -------

 

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