Re: [papercreters] Rapidset cements and papercrete

hi,

the rapidset concrete i used was Rapidset  60 and it said on the front of the bag that it was mag phos cement based- it definitely

 had ammonium something in it- hopefully not ammonium sulfate bit rather ammonium phosphate-unpleasant smell and generally

unpleasant as well as expensive. i tried to look at the information sheet to see what else was in it but you had to register and i got

an error page. i gave up then as i wouldn't  wish to use it again. i just hope it holds as the $80 core of the plinth for my current

sculpture as a retrofit would be quite impossible!

cheers, eo

 

On Sun, Feb 17, 2013 at 10:20 PM, zenseeker70 <mrinnovation@frontiernet.net> wrote:

 

Hi,

It looks like the rapidset cements are actually Calcium Sulfoaluminate Cement and not MgO based. If this is the case then Rapidset should react with Zinc coatings, but I have not heard of MgO not being compatible with chicken wire and other galvanized coatings. Calcium Sulfoaluminate Cements also reach a high early strength similar to MgO and should be compatible with paper fibers as well. Might be worth a try.

http://www.ctscement.com/Cement_MSDS.asp

Tad

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