Re: [papercreters] possible add- nylon fibers Bill Birdsall

Bill Birdsall has a site at
http://www.angelfire.com/in2/manythings/TEXT/NYLON-CEMENT.htm
with text but no pictures. If the yahooligans managed to break that link, try
http://tinyurl.com/6k96kh

Spaceman

Charmaine Taylor wrote:

Here is   Bill Birdsall INFO -- he talks about the mountains of plastic fishing twine that is usable, so yes if it can be chopped to 1-3" in why not?  http://wiki.seasteading.org/index.php/How_to_make_nylon-cement_shells  AKK-- his site below  is NO longer up!!  I have the 13 page- 1.4MB file in PDF I can send to anyone who requests it directly-- and below is a post he made in o4 on the ferrocement.net site--  From: "Bill Birdsall" <billbirdsall@hotmail.com>  Date:2002-04-09   I would like to share my experience with a new material combination I have been working with for many years.  Nylon-cement is a combination of recycled nylon fishnet and cement.  It has lots of good uses, such as making 1/4 inch thick cement floors, lining carved earth shapes such as outdoor furniture, and above-ground structures.  Visit my web pages for more details.   BOTH DON'T EXIST > Photos are at:  http://communities.msn.com/BillBirdsall An essay on nylon-cement and the projects I have done with it are at:  www.angelfire.com/in2/manythings/page5.html  The nylon fishnet can stretch, so it doesn't prevent cement cracking, but it does hold pieces together if they do crack, preserving function.  It doesn't rust, like iron, which is an advantage.   About the only thing that hurts nylon is ultraviolet light, and the cement protects it from sunlight, so it should be a material combination with pretty good longevity.  My house, which is dome-like, was built over a steel rod structure, like ferro-cement, but all of the carved-earth work, including a tunnel, uses no iron.   There are above-ground techniques, such as stretching the fishnet like a tent and then plastering it, that also use no iron.    Iron rods rusting have caused me some problems already in the house.  The old rod manufacturing technique was to let the red-hot rods cool slowly in the air, which let carbon fibers form in the rods, and allowed oxygen to enter the rod and rust it faster.  Water-cooled rods have fewer carbon fibers in them, and are more rust resistant.   None of the supply stores here in Puerto Rico seem to be conscious of that.  I hope the industry has shifted over to water-cooled rods now.  Not to do so would be a disservice to all builders.  I also use silicone rubber to make architectural models.  It is great for making irregular shapes representing ferro-cement, or nylon-cement structures.  I will write up something on those model making techniques soon.     --  Bill  ++++++++++++ SO it has been done and may add interconnecting tensile strength.. If I had access I would use it, as I use sawdust and it is tiny-- and having nylon fivers to add wouls help. I did buy a sack of a Japanese fiber- super strength Kuraray inc.  they are online qand their PVA FIBERS ARE DESIGNED SPECIFIC FOR CEMENT USE.  THEY WERE SHOWN AT THE ITSA  ( thin shell assoc.) conference, IN OREGON 3 YEARS AGO..  A 40 PD BAG LASTS FOREVER, AND THE TINY FINE FIBERS  DO THEIR JOB.  opps capps!!  see the site on cement reinforcement  http://www.kuraray-am.com/pvaf/index.php    

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