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Q: How many bags of cement would be needed for a cubic yard of concrete?

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One cubic meter of concrete is equal to 1.308 cubic yards of concrete. If there are 5 1/2 bags of cement in 1 cubic yard of concrete, there would be 7.2 bags in 1 cubic meter of concrete. These are the 94 pound bags of portland cement or roughly 40kg bags so figure 8 bags total. Some will be left over

I cant accuratly help you with the cement content but you need about 1 ton of sand and 1 ton of stone for every cubic meter of concrete. The cement content would depend on what you are using the concrete for. At 15 newtons of strength you would ( and this is just an educated guess) need about 95kg of OPC cement, 85kg of GGBS slag, 1.5lt of WRA (water reducing agent) and about 70lt of water to gain a 50mm slump per cubic meter. If I were you I would get it ready mixed. 70 Cube is a LOT of cocrete. Ready mixed 15 Newton concrete is about £75 inc vat per meter delivered. Regards Colin, a Tarmac concrete batcher.

This can vary do to the mixture of sand, stone, cement... but an approximate average would be 3000 lbs

This can vary do to the mixture of sand, stone, cement... but an approximate average would be 3000 lbs

Cement is usually purchased as a powdery substance that is mixed with sand, aggregate, gravel and water to form concrete. Since the cement itself is usually a powder, it is hard to measure a standard value for it's specific gravity. And since cement is usually not used by itself, knowing it's specific gravity is not particularly useful. A more useful question is "What is the typical density of concrete?" A rule of thumb answer is that normal cured concrete has a density of about 150 pounds per cubic foot. This includes the weight of the cement, sand, aggregate, and that part of the water that chemcially binds with the cement to form the concrete. Since water weighs about 62.4 pounds per cubic feet, concrete is about 2.4 times as heavy. Thus the specific gravity of concrete is about 2.4. If you took cement and mixed it with water, you would eventually have a hard lump of useless cement and it would also have a specific gravity of between 2 and 2.4. Ash Grove Cement from the Foreman, AR Facility normally has a specific gravity of 3.15. Depending on the source of the cement, the specific gravity may vary, but typically it will be close to this figure. Knowing the specific gravity of cement is critical when developing a mix design for concrete, because if one does not know the specific gravities of the raw materials, it is not possible to figure the proportions needed to give you the appropriate yield for a cubic yard of concrete.

You calculate the total cost of 1 cubic meter reinforcement cement for heavy foundation work by adding all of the costs. Essentially you would have to figure out the total of pounds of concrete for 1 cubic meter multiply that by the cost per pound and then add in the cost of labor it takes to pour 1 cubic meter.

Well, you make a sidewalk from concrete, not just cement. Concrete consists of cement, sand, gravel and water. You will need 5.5 cubic feet of concrete. A standard sidewalk grade of concrete would be 1 part cement, 2 parts sand, 3 parts gravel- so the sidewalk needs 0.91 cu ft of cement- about 87 pounds worth- plus sand and gravel. If you want to buy the premixed bags of concrete (like Sacrete), you will need about 17 of the 40 pounds bags. And you did not ask, but 3 inches is kind of skinny- I would go for at least a 4 inch thick sidewalk.

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.

AnswerDepending on the relative proportions of water, sand, stone, and cement, the weight per cubic yard can vary from less than 2000 lbs to nearly 3500 lbs; I would estimate most commercially (truck) delivered concrete would run close to 3300 lbs per cubic yard - remember there are 27 cubic feet in a cubic yard!

One popular formula for making concrete is the "1-2-3": 1 part portland, 2 parts sand, 3 parts gravel. A 94# bag of portland (approximately 1 cubic foot) would yield 6 cubic feet of concrete. 3 cubic yards of concrete x 27 (cubic feet per yard) = 81 cubic feet; 81 / 6 (cubic feet of concrete per bag) = 13.5 bags of portland. This Formula 1 cubic yards of concrete= One popular formula for making concrete is the "1-2-3": 1 part portland, 2 parts sand, 3 parts gravel. A 94# bag of portland (approximately 1 cubic foot) would yield 6 cubic feet of concrete. 1cubic yards of concrete x 27 (cubic feet per yard) 27 cubic feet; 27 / 6 (cubic feet of concrete per bag) = 4.5 bags of portland cement Mucca suggested: this mixture would be fine for setting fence posts, but not for pouring a foundation. concrete mix is often measured in "sacks", that is number of sacks per cubic yard. The number of sacks of portland cement per cubic yard determines the strength of the finished product. For casual use 1-2-3 works fine. if you were pouring a driveway you might consider how much stress will be applied, the thickness of the slab, even how cold it gets in winter to determine the mix. I called a concrete supplier today to find out how much ten yards of concrete would cost to have delivered. He asked what mix I would need. I told him I wanted a slab for a garage. He suggested a six yard mix, that is six 94 lb sacks of portland cement per cubic yard. (he quoted ($99 a yard plus $4 per mile from the plant in November 2010 in northern Nevada) So for more than casual use you need to do some research to find the proper mixture. Work with someone with experience or do a lot of digging, or both. Portland Cement Association at cement.org is one place to start

concrete

Assuming you mean 1,000 square feet, the math works like this. Concrete is typically measured in cubic yards. A cubic yard is 3ft X 3ft x 3ft OR 27 cubic feet. Your volume of concrete would be 1000 x (5/12) = 416.6 cu.ft. / 27 cuft = 15.4 yards of concrete. Be sure to account for waste, slope (which may thicken your slab), etc.

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