Where can I get the pozzolan or Type V cement to use in building a ferrocement boat? Also, where can I get ASTM C 33 graded sand?
Pozzolan need not be used in ferrocement boat building nor is Type V cement necessary. Type II cement should be used for boats to be used in salt water but normal Type I cement may be used for boats to be used in fresh water. Sands are not sold ordinarily on the basis of any particular sieve analysis. It may, however, be possible to purchase sand that does conform to the ASTM C 33 grading. A local testing laboratory may have records of the sieve analyses of sands being used in your area.