On Mon, 30 Jan 2012 13:28:42 -0500, dadiOH wrote:
If you are buying concrete, why do you want sand and rock?
I'm not sure if I'm using the words right.
I'm getting rather confused here.
You want something to hold it to the slab, right?
That something is mortar. Could be Type N mortar...
could be Type S mortar...could be thinset

In another thread, I confused everyone by being wholly ignorant about the
terms concrete vs cement vs mortar vs grout.

So how's this first pass at clarifying:

Cement -- aka "Portland cement" - it's the sticky gray glue.
Lime -- aka white "hydrated lime" - prevents sand & cement separation.
Sand -- mixed with cement - I think it gives strength to cement.
Mortar -- cement + lime + (rough) sand (rougher mix for stone & brick)
Grout -- cement + lime + (smoother) sand (finer mixture for tile)
Concrete: -- cement + lime + sand + gravel (courser mixture)

Chuck Banshee wrote:
On Mon, 30 Jan 2012 13:28:42 -0500, dadiOH wrote:
If you are buying concrete, why do you want sand and rock?
I'm not sure if I'm using the words right.
I'm getting rather confused here.
You want something to hold it to the slab, right?
That something is mortar. Could be Type N mortar...
could be Type S mortar...could be thinset

In another thread, I confused everyone by being wholly ignorant about
the terms concrete vs cement vs mortar vs grout.

So how's this first pass at clarifying:

Cement -- aka "Portland cement" - it's the sticky gray glue.

Not sticky until wateris added.

Lime -- aka white "hydrated lime" - prevents sand & cement separation.

Makes the mix more plastic

Sand -- mixed with cement - I think it gives strength to cement.
Mortar -- cement + lime + (rough) sand (rougher mix for stone &
brick)
Grout -- cement + lime + (smoother) sand (finer mixture for
tile)

Concrete: -- cement + lime + sand + gravel (courser mixture)

Gravel is pebbles. Water rounded pebbles. For concrete, you want crushed
rock...stuff with angles in a variety of sizes; AKA "aggregate".

OK with minor addendums

--

dadiOH
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On Mon, 30 Jan 2012 20:24:32 +0000 (UTC), Chuck Banshee
wrote:

In another thread, I confused everyone by being wholly ignorant about the
terms concrete vs cement vs mortar vs grout.

So how's this first pass at clarifying:

Cement -- aka "Portland cement" - it's the sticky gray glue.
Lime -- aka white "hydrated lime" - prevents sand & cement separation.
Sand -- mixed with cement - I think it gives strength to cement.
Mortar -- cement + lime + (rough) sand (rougher mix for stone & brick)
Grout -- cement + lime + (smoother) sand (finer mixture for tile)
Concrete: -- cement + lime + sand + gravel (courser mixture)


As a kid, I was raised calling concrete "cement", as in "a cement
sidewalk". While in construction terms, this is not the correct word, a
lot of people call it CEMENT. It's just one of those slang terms that
we all have to live with. Heck, I often see real estate ads that state
something like "home has a cement driveway".

Using the correct wording, cement is actually portland cement. (which is
a dry powder and not sticky at all until it's wettened). But the word
cement is used for other types of glues too. Model airplane cement was
a common phrase in the 1960's. (Do they still sell model airplane
kits?). Flooring adhesives have been labelled as "cement" too, as are
other glues........

It's just one of those english words that has gotten twisted and turned,
and may require asking the speaker exactly what they are saying. Yet,
sometimes it's just common sense. Model airplanes are assembled using
portland cement or concrete, so it's obvious what is being stated.

"Chuck Banshee" wrote in message
...
On Mon, 30 Jan 2012 13:28:42 -0500, dadiOH wrote:
If you are buying concrete, why do you want sand and rock?
I'm not sure if I'm using the words right.
I'm getting rather confused here.
You want something to hold it to the slab, right?
That something is mortar. Could be Type N mortar...
could be Type S mortar...could be thinset

In another thread, I confused everyone by being wholly ignorant about the
terms concrete vs cement vs mortar vs grout


I think you really need to get yourself down to the local library and get a
good book.
It's pointless troubling your head about these matters without a basic
grounding.
If you find something in the book you don't understand get on here

Or go to Wikipedia which is good on technical topics.
http://en.wikipedia.org/wiki/Cement
http://en.wikipedia.org/wiki/Concrete
http://en.wikipedia.org/wiki/Grout