How many premixed cement bags are needed to pour 1 cubic foot of concrete?

Answer 1

one cubic meter of concrete equals 30 bags(approximately)

The exact answer is 28.8 bags of 50kg cement bags.

Typical Portland Cement has a density of 94 lbs/cubic foot, which translates to 1505 kg / cubic meter.

So, divide 1505 kg by the weight of a "bag" of cement in kg.

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Seems to be perhaps a little confusion here between concrete and cement.

Cement is the powder we mix with aggregate to make concrete.

Cement varies in density as much as 100%, i.e. it can double in density.

From the above URL one 94lb bag is taken to be 1 cu ft for building purposes.

1 cu metre = 35.3146667 cu ft and therefore 1 cu meter of CEMENT is that many 94lb (42kg) bags.

Hence the answer for how many Cement bags in 1 cu m = 35.3 94lb bags.

It would make more sense if the query was directed towards finding how many bags of cement are required for 1 cu meter of CONCRETE.

This depends, of course, on the chosen concrete mix. They vary widely. A most common mix is 1:2:3 - 1 part cement, 2 parts sand, three parts aggregate all by volume.

In concrete making the dry ingredients shrink during the process as they compact together. It is found necessary to commence with 1.6 cu m of dry material to finish with 1 cu meter of concrete.

1.6 cu m = 56.5034 cu ft of which the cement portion should be 1/6 for a 1:2:3 mix.

56.5034/6 = 9.4172 cu ft and therefore 9.4172 1 cu ft, 94lb or 42kg bags are required or round about 20 of the usual household DIY worker's 20kg bags here in Australia.

Hence the answer for how many bags of cement to make 1 cu m of (1:2:3) concrete is 20 20kg bags.

These answers are not precise because of the nature of cement. Refer again to the Portland Cement Association website and their remarks on density.

Answer 2

This obviously depends on a few factors, what size bag are you using, how wet the mix is, deeper voids in the area to be filled, etc. In the case of an 80 pound Redimix bag of concrete the label states it will cover approximately a third of a cubic foot. So it would take just over 3 bags to fill a cubic foot.

Answer 3

Ans : Approximately 6 to 6.2 bags of cement per cubic meter of concrete.

The qty of cement will depend on other raw materials( viz coarse aggreagate,fine aggreagate etc)used in the concrete.

Answer 4

22.lit water required for one bag of cement weight of 50kg ratio(1:2:4)

Answer 5

1cmx1mx1m=1 bag cement

Answer 6

depends on the size of the bag