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Conversion of Weight of concrete to Volume
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wanboksutnga
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SEFI Member


Joined: 17 Mar 2013
Posts: 8

PostPosted: Mon Apr 01, 2013 8:04 am    Post subject: Regarding Conversion of Weight of concrete to Volume Reply with quote

Thanking you Sir for the attachment and also ur suggestions
es_jayakumar wrote:
I attach details on how to work out the quantities in terms of volume.

- E S Jayakumar
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wanboksutnga
SEFI Member
SEFI Member


Joined: 17 Mar 2013
Posts: 8

PostPosted: Thu Apr 04, 2013 7:17 am    Post subject: Reply with quote

es_jayakumar wrote:
I attach details on how to work out the quantities in terms of volume.

- E S Jayakumar

As per ur instruction i follow from ur attchment to convert from weight to volume.I confuse because the proportion i have got all the three is as shown below.please help which one is mostl likely practiceable  


     
Conversion of weight to volume batch by Determination of Bulk Density of Aggregate
A.Fine Aggregate
Case I: When fully dry (F.A)
Known volume of dry F.A = 1.170 Litres
= 0.00117 Cum
Weight of  the same sample = 1.680 Kg
Bulk Density of dry F.A (1.17kg) = 1435.897 Kg/Cum
1  kg of dry F.A = 0.000696 Cum
Again for one bag of cement 50kg = 0.035 Cum
As per mix design M30 for 50 kg of cement
Weight of Fine aggregate = 58.050 Kg
Volume of Fine aggregate = 0.040 Cum
B.Coarse Aggregate
Case I: When fully dry (C.A)
Known volume of dry C.A = 1.170 Litres
= 0.00117 Cum
Weight of  the same sample = 1.430 Kg
Bulk Density of dry C.A (1.17 kg) = 1222.222 Kg/Cum
1  kg of dry F.A = 0.000818 Cum
Again for one bag of cement 50kg = 0.035 Cum
As per mix design M30, for 50kg of cement
Weight of Coarse aggregate = 157.720 Kg
Volume of coarse aggregate = 0.129 Cum
Recommended water cement  ratio = 0.41
Thus water needed for 50 kg of cement = 20.5 Kg or Lit
Final proportion by volume/bag cement(0.035 cum) = 1.00 1.16 3.72
Original proportion by weight as given in the mix design/ bag cement (50kg) = 1.00 1.16 3.15
Final proportion by volume/bag cement (0.0158 cum) using specific gravity as posted earlier 1.00 1.38 3.72
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