Information Bulletins
Email update series
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Who is onBalance?
National Plasterers Council and its Member's Research
Projects
This section contains our observations and review of
the NPC, its member companies, and thier research 'track record'.
Interestingly, the NPC now suggests that all past in-house experiments
investigating the cause of pool spotting have conflicting results, and
that nothing can be learned from them.
Now they insist that all research has to be third party and independent.
Now they are spending and asking for thousands of dollars from industry
for research that is primarily focusing on aggressive water as causing
deterioration. Of course "aggressive water" causes deterioration!
No one has ever said that it doesn't. But why would that be the focus of
an expensive research study?
The NPC Technical Manual and Plaster Soft Spots
Etching
This is more information on the Etching
Study that was co-financed by the San Fernando Valley Chapter of IPPSA
and reported on in the February 15, 2003 issue of Service Industry News.
Soft Spots (sometimes incorrectly referred to as
"Spot Etching"
- The "State of the Art" on Spot Etching Studies:
- Spot Etching Mythology
- The Chapman Study
- The Dow Whitney Study
- The Arizona Test Pool
- The "ITZ" Theory (Inter-transisitional zones)
- The Dongell Studies
- Randy Duke's "Your Worst Nightmare"
- Don Hafer's studies
- The first one
- The second one
- The Plasterer's Conference presentation
- Our critique
of the presentation
- His response
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Additional
reading from the cement/concrete industry
- Portland Cement Association's report on Surface
Discoloration
New Plaster Start-up Chemistry - the "Bicarb
Start" Method
New Plaster: When to Turn the Water On
Here is a reprint of the "Fill
Delay" article we provided to Service Industy News.
Calcium Nodules
Issues Involving the Use/Abuse of Calcium Chloride
as a Set Accelerator in Pool Plaster
onBalance Dosage and Volume Calculation Methods
Other Subjects of Interest (to us...)
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