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Kenneth Hertzog
06-30-2008, 8:22 AM
Hello All

I have a quick question
I know that the mix for concrete is 3 gravel 2 sand 1 cement
the question is this
Is this based on weight or volume

thanks for your help I'm sure this is writen somewhere just can't find it

ken

Ken Fitzgerald
06-30-2008, 8:35 AM
Ken,

I could be wrong but I think it's based on volume. I've seen Tommy on TOH instruct Kevin to use a shovel 3 parts, 2 parts, 1 part.

Chuck Wintle
06-30-2008, 9:12 AM
Hello All

I have a quick question
I know that the mix for concrete is 3 gravel 2 sand 1 cement
the question is this
Is this based on weight or volume

thanks for your help I'm sure this is writen somewhere just can't find it

ken
Ken.
I have a pdf from the Portland Cement Institute on concrete ratios but cannot upload this pdf to the forum because it is too large.

David G Baker
06-30-2008, 10:53 AM
My dad used 3 shovels gravel 2 shovels sand and one shovel of cement. His formula worked fine.

Chuck Wintle
06-30-2008, 11:19 AM
Page 1 on making concrete

Kenneth Hertzog
06-30-2008, 12:03 PM
Charles
thank you for the page it will be very helpful.
I have a three point hitch cement mixer
it will mix .8 yrd was wondering which is better
that page describes it very well
ken

Cliff Rohrabacher
06-30-2008, 12:16 PM
A local fellow here told me that when building a stone wall that I need to get the thermal properties of the mortar about the same as the stones and the only way to do that was to use more sand and less cement. LOTS more sand. -------------------------------------------------------------------------------------------------------------------------------------- Otherwise the mortar will separate from the stone in the first few winters.

Russ Filtz
06-30-2008, 2:07 PM
Brick mortar does always seem very "sandy". Of course being lazy, I would just pick up a bag of premixed brick mortar and not try to mix myself!