Cartoon Network

20 December 2012

Re: [DIY] RE: concrete and mortar respect

 

Washington state made the other type of plant legal.

I'm at least starting to hope that before I die people will
understand the difference between hemp as a great source of fiber
and cellolose (but will not get you high),
and the plant that shares some common roots, but has been adapted
to be short, less fibrous and put more energy into generating
certain compounds that some people seem to enjoy.

They are using hempcrete for buildings in England, which also
is rather wet. Rotting of the fibers doesn't seem to an
an issue, perhaps they are encapsulating (stucco), or as the
fibers do rot, it provides small dead air space (good insulation),
while not weakening the concrete matrix. Not an option to
investigate first hand yet, so I'm guesing.

And its encouraging using something that is not petroleum based.
Diversity and additional options always a good thing.

Yes, exposed fiberglass is the pits. I've learned to always put
shovels away. The wood handles rot and break. The fiberglass handles,
the sun (UV) breaks down the resin, and you get a handful of
tiny fiberglass shards next time you use the shovel.

On 12/19/2012 12:55 PM, Dale S wrote:
>
>
> *That is a bit like the horse hair that used to be added to plaster for
> strength. I wonder if using the salvaged fibers from discarded nylon
> rope might also work and be less subject to rotting over time than would
> be hemp. As I seem to recall you live near the coast and it used to be
> that you could get discarded mooring lines for the hauling. They have
> concrete that has fiber glass in the mix, but it is the pits to work
> around as those tiny protruding bits of fiber really can tear you up.
>
> *
> Dale in the Flatlands.
> Dave Uebele wrote:
>>
>> I'm also hoping at some point to explore something they have been
>> using in the UK: hempcrete, using the plant fibers, not drug use.
>> It looks like it has some promising characteristics.
>>
>> dave
>> On 12/19/2012 07:21 AM, Jan Flood wrote:
>> > I've always used the words concrete and cement interchangeably - but
>> > last night learned the correct term is concrete. Cement is an
>> > ingredient in concrete. Never too late for old dogs........ Think
>> > I'll look up the terminology and components of mortar & grout, I know
>> > what they're used for just never thought about what the mix is. And
>> > Carmen is right, the amount of "cement" is a vital element in any of
>> > these mixtures - depending on what you're doing. I still like plaster
>> > for a lot of things but it's hard to store in this climate. Years ago
>> > water troughs for livestock were carved from Tufa rock. At some point
>> > someone worked out a formula -- and as peat moss was readily available
>> > -- it is "the" ingredient for Hypertufa. Although the mix is the same,
>> > shredded paper is "the" ingredient for Papercrete - and makes a lighter
>> > product. There is a forum just for Papercreters and what they do is
>> > amazing. You can see the "green" homes they are building using this
>> > material. I'm not familiar with using hypertufa for this but entirely
>> > possible. The versatility is endless, from planters, sculptures,
>> > retaining walls & homes! Google Papercrete Homes and you'll be
>> > surprised by what is being done.
>>

--
Dave Uebele (daveu@sptddog.com)

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