Small amounts of baking powder will induce bubbles into water. I know
this for a fact. My scrambled eggs are always light and fluffy after
adding a litle baking powder and water mix! But bubbles in a structural
componate is weak! That's why you vac. out air in composite molding.
For several years cement engineers have added small styrofoam pellets
into concrete to lighten formed thick slurry concrete blocks. As well
as internel insulation. Check out Labrador, Iceland, Finland concrete
buildings made with light concrete blocks.
For you purest.....dried yucca trunk has great value.
http://www.herbalextractsplus.com/yucca.cfm
The dryed strands keep
anyway bugs and is stronger than grass, Several desert dwellers used it
for adobe blocks. You might ad a little to papercrete blocks for
reinforcment and insulation.
Here is another suggestion...cinder....there are vocanic cinder cones
all over. Very light stronge and a great filler for papercrete blocks.
But it does ad red to the color!
Cheers!
Howard
Chloride, Arizona
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