Re: [papercreters] Batteries on concrete (was: Re: just wondering)

hi,

the battery item was an aside, to do more with the interaction of portland and metals

,( specifically, the galvanizing on chicken wire)

than batteries per se- but thankyou for the observation on childrearing and battery keeping!

the reason i raised this issue is that

 i wish to use papercrete in conjunction with galvanized chicken wire-

it is my understanding that 'galvanic currents' between the galv and Something in the portland cement result in the

structure inevitably being weakened over time. not good.

i was therefore wondering if the MgPO4 cement, being less conductive,

  if this is the case, could possibly eliminate this problem if used instead of portland

in the papercrete mix-

<this was where the battery item came in-phew-

no wonder the guy at the hardware store goes crosseyed>

being brief and concise is a skill!

so...neglect, the 11th item on th scale of hardness, is Not something

i include in my work- for that reason, i would like to think that it may stand the test

of time instead of disintegrating from a conflict in the materials used.

What is it in concrete that interacts with the galv?

I have tried painting the armature with acrylic paint to separate the 

wire from the PC but it isn't possible to cover it all.

Would a percentage of reactive MgO in the papercrete mix

perhaps eliminate the problem ( failing the availability of the MgPO4 cement?)

..

sorry to seem 'off topic'- i may be using papercrete in a slightly

different application as i am not making blocks or panels

but its still papercrete!

cheer, eo 

On Sun, Feb 10, 2013 at 9:41 PM, JayH <slurryguy@yahoo.com> wrote:

 

We're getting away from discussing papercrete, but I'll join in the discussion anyway.
 but impossible to
The biggest reason a lead acid battery discharges when sitting on concrete is because almost always whenever such a battery is sitting on concrete, it is sitting idle. People pull a battery out of a vehicle or some equipment, set it on the floor, and there it sits.

When a battery sits idle, on the concrete floor of a garage, on a shelf, in a shed, or buried underneath junk in the back of a pickup truck, most people tend to forget about it for weeks/months/ or even years. Neglect is very hard on batteries. You think concrete is hard? It's soft compared to Neglect. Neglect is harder than diamonds.

That's why Diamonds soften a woman's heart. Therefore Diamonds are softer than Neglecting her. It all seems so obvious now doesn't it? It's science!

Mohs' scale of hardness.

1 Talc
2 Gypsum
3 Calcite
4 Flourite
5 Apatite
6 Feldspar
7 Quartz
8 Topaz
9 Corundum
10 Diamond
11 Neglect

What? You don't believe that there is an 11 on the Mohs scale? Oh there is. There is. I think it was explained in a movie... Spinal Tap. ;)

Prove it to yourself by conducting the following experiment:
Find a person who neglects feeding their brain... and then see if they are hard headed.

You will find with a near 100% accuracy that hard headed people neglect feeding their brains.

What... uh... ahem... what were we talking about again? Oh yeah, batteries...

Getting back to the topic...

The best way to keep a lead acid battery in good condition is to follow several important rules.

1. Keep it charged.
2. Don't overcharge.
3. Avoid deep discharges.
4. Keep it filled with water.
5. KEEP IT CLEAN.

Number 5 is probably the one people neglect the most. Even a small amount of what appears to be dust on a battery can often be acidic residue. Acidic residue on the battery is conductive and provides an electrical path to discharge the battery.

By the way... those same 5 rules for taking care of lead acid batteries also apply to raising children. Think about it. :)

--- In papercreters@yahoogroups.com, eo greensticks wrote:
>
> Hi,
>
> interesting- like an 'old wives tale' then? thankyou for that-
>
> electricity , i will confess, is a mystery to me
>
> but the idea of 'galvanic forces' eating away at my work from the
> inside, all invisible,
>
> bothers me a bit! What do you reckon about the interaction of portland and
> zinc, copper,etc?
>
> i would prefer to use biological fibre- a piece of wire is like a
> technological marvel
>
> in itself- cellulose is plentiful on the other hand.
>
> cheers, eo
>
>

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