[Cob] rebar, cob, rust, further corrosion

[Lee Shultz]

Hi.

I just found the following on http://www.buildingforhealth.com/

Steel rebar is often used to reinforce foundations or pin straw bale walls together. Unfortunately, production of steel rebar has a high environmental impact and its use can create an unhealthy energy field in your home. Fiberglass-reinforced- plastic (FPR) rebar is non-magnetic, non- electricity conducting and will not create a distorted magnetic field. It will not rust or corrode. It is stronger than steel, and is only about 1/4 the weight of steel. It is easy to cut, however, it cannot be bent - bends can be ordered.

Order Info: Call for current pricing and delivery. (800-292-4838)

-Lee

-----Original Message-----
From: Amanda Peck [mailto:ap615 at hotmail.com]
Sent: Monday, January 19, 2004 7:24 AM
To: coblist at deatech.com
Subject: Re: [Cob] rebar, cob, rust, further corrosion




a) wasn't there a rumor around some years back that putting rebar in 
adobe--or some other form of earthen building--was annoying and to no 
purpose because twenty years later if you cut open the wall all you would 
find were rust tracks?

b) rust is BIGGER than straight metal, isn't it?  It swell, could it break 
something like concrete or cob?

c) couldn't find a link to it, but a major bridge in Nashville (Silliman 
Evans) was condemmed and rebuilt precisely because tiny cracks had let 
salt--to melt snow and ice--to seep into the reinforced concrete, rusting 
the reinforcing bar, which made matters worse, if I'm right on b).  My 
recollection is that a big chunk or two fell into the river before they 
caught it.

d) which would lead me to think that deliberately PUTTING rusty metal in 
almost anything is a bad idea.

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