7696Views9Replies

Author Options:

Can decomposed granite be mixed with cement for use as structural concrete? Answered

We have a mountainous property with no sand and very little rock other than granite. Can I use decomposed granite (as fine as sand and small pebbles) as aggregate, instead of river gravel and or sand?

Comments

The forums are retiring in 2021 and are now closed for new topics and comments.
0
TiffanyS112
TiffanyS112

1 year ago

Hi MikeT107: I'm interested to do what you've done here. Did it work for you? I'm in Utah and we get lots of snow and 100* heat. Thanks, Tiffany

0
MikeT107
MikeT107

5 years ago

Thanks for the responses. I guess there is a reason you only see deco on tennis courts, driveways and paths. Looks like I'll be hauling rock. Nice pun Joe.

0
steveastrouk
steveastrouk

Answer 5 years ago

IIRC Frank Lloyd-Wright used decomposed granite concrete for the blocks of the Gehry house in LA, and some blocks at Southern Florida College....it didn't go well.

0
Jack A Lopez
Jack A Lopez

Answer 5 years ago

So I guess that rock is OK aggregate, but you really don't want to take it for granite.

Heh... Take it for granite. It's a pun. ;-P

0
iceng
iceng

Answer 5 years ago

+1 His River House had to be saved with support posts

One might say he overextended his reach :)

Someone with Guts or a Huge Ego had to try these ideas, after all, we learn more from our failures then from success... That's why we push working designs harder and harder, to find a failure to learn from....

Riverhouse.jpg
0
Josehf Murchison
Josehf Murchison

5 years ago

It is OK for walk ways and drive ways only.

Use it for things like a bridge wall or a foundation and it will not last.

0
Downunder35m
Downunder35m

5 years ago

Does not matter really what use as an aggregate as long as it is strong enough - and I guess granity qualifies for strong ;)
People use paper, saw dust, sand, polystyrene and more, so using what you have at ahnd just seems like logic to me.