4500
The answer is, remarkably, 6. Answer: "6 sack" or "6 bag mix" has six bags of cement per cubic yard of concrete mix. Since each sack/bag contains 94 lbs of dry cement, this equals 564 lbs of cement per cubic yard of concrete.
The strength of concrete on the 28th day is considered full strength with regard to the engineering calculations for its use. Concrete continues to get hard for 100 years or more, as long as it has water on it now and then. For a 6-sack concrete mix, its 28 day compressive strength should be at 4,000 psi or greater.
Cement : Sand : Gravel 1 : 3 : 6
Concrete is measured in psi "pounds per square inch". Most driveways and sidewalks are anywhere from 3,000-3,500 psi. A state job would be 4,000 to 5,000 psi as they have different standards than your average contractor. Concrete itself can range anywhere from 2,500 to 10,000 psi according to what it's being used for.
Concrete strength is measured by "bag mix", meaning that the bag mix answers the question, how many bags of cement per yard of concrete. If you're looking for a "6 bag" mix, that means 6 bags of cement per yard of concrete. A "bag" of cement is 1 cubic foot. A yard of concrete is 27 cubic feet (3 X 3 X 3 = 27). If you want to make a "6 bag mix" of concrete, using 1 bag of cement, you would make 1/6 yard concrete with 1 bag of cement. If you would be content with a "5 bag mix", you could make 1/5 yard. Concrete is often defined as ratios of cement,sand,aggregate such as: 1:2:3 which is a very common mix. For a 1:2:3 mix you would need 1/6th of the volume to be cement. The dry ingredients are generally 1.6 x finished concrete volume. Therefore dry volumen for 1 cubic yard = 1.6 cu yards = 43.2 cu ft. 1/6 x 43.2 = 7.2cu ft. Therefore, if one bag is 1 cu ft we need 7.2 bags for a healthy 1:2:3 mix. A '6 bag mix' or a '5 bag mix' are a bit short on cement.
The answer is, remarkably, 6. Answer: "6 sack" or "6 bag mix" has six bags of cement per cubic yard of concrete mix. Since each sack/bag contains 94 lbs of dry cement, this equals 564 lbs of cement per cubic yard of concrete.
The strength of concrete on the 28th day is considered full strength with regard to the engineering calculations for its use. Concrete continues to get hard for 100 years or more, as long as it has water on it now and then. For a 6-sack concrete mix, its 28 day compressive strength should be at 4,000 psi or greater.
Cement : Sand : Gravel 1 : 3 : 6
Concrete is measured in psi "pounds per square inch". Most driveways and sidewalks are anywhere from 3,000-3,500 psi. A state job would be 4,000 to 5,000 psi as they have different standards than your average contractor. Concrete itself can range anywhere from 2,500 to 10,000 psi according to what it's being used for.
Concrete strength is measured by "bag mix", meaning that the bag mix answers the question, how many bags of cement per yard of concrete. If you're looking for a "6 bag" mix, that means 6 bags of cement per yard of concrete. A "bag" of cement is 1 cubic foot. A yard of concrete is 27 cubic feet (3 X 3 X 3 = 27). If you want to make a "6 bag mix" of concrete, using 1 bag of cement, you would make 1/6 yard concrete with 1 bag of cement. If you would be content with a "5 bag mix", you could make 1/5 yard. Concrete is often defined as ratios of cement,sand,aggregate such as: 1:2:3 which is a very common mix. For a 1:2:3 mix you would need 1/6th of the volume to be cement. The dry ingredients are generally 1.6 x finished concrete volume. Therefore dry volumen for 1 cubic yard = 1.6 cu yards = 43.2 cu ft. 1/6 x 43.2 = 7.2cu ft. Therefore, if one bag is 1 cu ft we need 7.2 bags for a healthy 1:2:3 mix. A '6 bag mix' or a '5 bag mix' are a bit short on cement.
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
there are 108 20kg bags of concrete to 1 cu mtr. If your making your own mix using dry mix concrete requiring cement and water, and your making a mix ratio of 5:1, then you divide 108 by 6 = 18. therefore: 18x20kg bags of cement to 1800kgs of dry concrete mix.
Mix ratio for M10 concrete is 1:3:6compressive strength is 10N/mm2 @ 28 days.1 part of cement, 3 part of sand, 6 parts of coarse aggregate.
28 days is the usual cure time for structural concrete. For street pavements and driveways made with 6-Sack concrete, 3 days of cure will support a car, but 7 to 10 days is required for it to support trucks. All concrete continues to cure forever, as long as moisture is present.
The recommended specifications for installing concrete piers for a house foundation include using a minimum diameter of 12 inches, a minimum depth of 4 feet, and spacing them no more than 6 feet apart. Additionally, the concrete mix should have a minimum strength of 3,000 psi and be reinforced with steel rebar. It is also important to ensure proper drainage and soil compaction before installing the piers.
6 bar is equivalent to 87.02 psi.
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