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Concrete mass Properties

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Message 1 of 12
Anonymous
522 Views, 11 Replies
‎11-10-2003 12:40 AM
‎11-10-2003 12:40 AM

Concrete mass Properties

I need to find the mass properties of concrete, weight (g/cm^3) anyone have
this info and would be willing to share? I have found only one number. and I
would like to finish the rest.
Jerry
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11 REPLIES 11
Message 2 of 12
Anonymous
in reply to: Anonymous
‎11-10-2003 12:47 AM
‎11-10-2003 12:47 AM

Problem is, concrete is a composite. So it varies depending on who makes it i guess. Its a bit like a question on here ages ago asking for the weight of carbon fibre, you cant tell unless u have more information on it. But you could try looking up a concrete company and seeing that they say.
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Message 3 of 12
Anonymous
in reply to: Anonymous
‎11-10-2003 01:27 AM
‎11-10-2003 01:27 AM

Sure, I realize that it isn't a constant, I just
wanted a number. I have done the weight and this is all I need for the moment. I
came up with 2.1945 g/cm^3 this is 137 lb/ft^3 found it in the machinery
handbook.


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
Problem
is, concrete is a composite. So it varies depending on who makes it i guess.
Its a bit like a question on here ages ago asking for the weight of carbon
fibre, you cant tell unless u have more information on it. But you could try
looking up a concrete company and seeing that they
say.
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Message 4 of 12
Anonymous
in reply to: Anonymous
‎11-10-2003 01:33 AM
‎11-10-2003 01:33 AM

Guy down at the concrete factory says about 2 ton per cubic
yard.


--

Have a nice day


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">

Sure, I realize that it isn't a constant, I just
wanted a number. I have done the weight and this is all I need for the moment.
I came up with 2.1945 g/cm^3 this is 137 lb/ft^3 found it in the machinery
handbook.


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
Problem
is, concrete is a composite. So it varies depending on who makes it i guess.
Its a bit like a question on here ages ago asking for the weight of carbon
fibre, you cant tell unless u have more information on it. But you could try
looking up a concrete company and seeing that they
say.
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Message 5 of 12
bobuhl
Explorer
in reply to: Anonymous
‎11-10-2003 02:47 AM
‎11-10-2003 02:47 AM

See ICF - from Weight Engineers Handbook 1976
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Message 6 of 12
Anonymous
in reply to: Anonymous
‎11-10-2003 02:51 AM
‎11-10-2003 02:51 AM

That's interesting. I was estimating that it would be about 80% if the weight of granite. That comes out to 138 lb/ft^3.

Tom
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Message 7 of 12
xavierl
Advocate
in reply to: Anonymous
‎11-10-2003 03:26 AM
‎11-10-2003 03:26 AM

according to BS882 weight of concrete for structural design purposes is to be taken as 23.6kN/m3(2.4057g/cm3)

compressive strength fcu=20N/mm2, Static Modulus Ec=25GPa

fcu=30N/mm2, Ec=28GPa

fcu=40N/mm2, Ec=31GPa

SI metric is the way , not slugs/square furlong...

Frans X Liebenberg
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Message 8 of 12
Anonymous
in reply to: Anonymous
‎11-10-2003 03:26 AM
‎11-10-2003 03:26 AM

A good estimate for normal weight 3000 psi concrete
is 145 pcf and 150 pcf if it is reinforced. 


style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
That's
interesting. I was estimating that it would be about 80% if the weight of
granite. That comes out to 138 lb/ft^3.
Tom
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Message 9 of 12
Anonymous
in reply to: Anonymous
‎11-10-2003 03:52 AM
‎11-10-2003 03:52 AM

Does that book have a copyright notice? People please don't post copyrighted material !!

I have removed the post from IVCF.

--
Kent
Assistant Moderator
Autodesk Discussion Forum Moderator Program


"bobuhl" wrote in message
news:f19b45f.3@WebX.maYIadrTaRb...
> See ICF - from Weight Engineers Handbook 1976
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Message 10 of 12
Anonymous
in reply to: Anonymous
‎11-10-2003 08:57 AM
‎11-10-2003 08:57 AM

Jerry,



Just get a chunk of concrete and do a "specific gravity" check. (Density = SG).



What... dont know how to do SG check ya say... Check here.



http://www.ganoksin.com/borisat/nenam/gravity.htm



and here



http://www.engineeringtoolbox.com/24_290.html



and if ya want to get really technical try this...



http://www1.coe.neu.edu/~ozgu/exp3.pdf



Regards,



Don A 🙂



Regards,



Don A 🙂
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Message 11 of 12
Anonymous
in reply to: Anonymous
‎11-10-2003 09:53 AM
‎11-10-2003 09:53 AM

2 different values depending on composition/strength

2.2 = 0.079 ( lbmass/( in^3 ) )
2.4 = 0.087 ( lbmass/( in^3 ) )

Jerry Chasek wrote:

>I need to find the mass properties of concrete, weight (g/cm^3) anyone have
>this info and would be willing to share? I have found only one number. and I
>would like to finish the rest.
>Jerry
>
>
>
>

--
Dennis Jeffrey
Autodesk Product Consulting and Training
Center for Design Excellence
http://www.engineering-helpdesk.com
http://www.design-excellence.com
260-459-1311 ext 221 or 800-550-6070 ext 221
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Message 12 of 12
Anonymous
in reply to: Anonymous
‎04-05-2004 04:10 PM
‎04-05-2004 04:10 PM

concrete (reinforced): 2.381 g/cm3
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