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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Monday, February 18, 2013
[papercreters] Rapidset cements and papercrete
at 12:20 AM