Concrete can be purchased in multiple forms, including in 60 or 80-pound bags, or delivered in large amounts by specialized concrete mixer trucks. Proper mixing is essential for the production of strong, uniform concrete. It involves mixing water, aggregate, cement, and any desired additives. Calculate Calculation Result 0.009 cubic feet or 0.000 cubic yards or 0.000 cubic meters if pre-mixed concrete*, it is 1.231 lbs or 0.558 kgs if 60 lbs per bag, it is 0.021 bags if 80 lbs per bag, it is 0.015 bags Concrete Weight Calculator How many bags of concrete per m3? You will require approximately 100 - 110 x 20kg Concrete Mix bags per m3 of concrete you need. The guidance varies slightly depending on the brand. For example, looking at the popular concrete mix available at Bunnings, we see the following: Bastion 20kg Concrete Mix: 100 x 20kg Bags per cubic metre At this point, concrete has achieved about 99% of its strength, and will continue to very slowly strengthen over the next few years. At 28 days old, I use a density of .085 pounds per cubic inch (146.9 pounds per cubic foot) when calculating structural load. Concrete is porous. A 5-gallon bucket of cement will weigh in at 60lbs for the one bag of pre-mix plus the water's weight added to the mix. Typical concrete pre-mix will require about ½ gallon of water. That's about 4.17 pounds of water weight. Therefore a bucket of cement will weigh about 65 pounds. Cement is a material used to make mortar and concrete and is usually sold in bags of various sizes. The most common bag size is 94 lbs (42.6 kg), but bags can range from as little as 40 lbs (18.14 kg) to as much as 94 lbs (42.6 kg). The weight of a bag of cement can also vary depending on the brand or type of cement. We need 6.28 cubic yards (4.8 m 3) of cement, and our producer sells cement in bags weighing 60 lb (25 kg) with a density of 150 lb/cu ft (2400 kg/m 3). The total weight of concrete that we need is 942.53 lb (427.52 kg). We assume a 5% loss in wastage and spillage. So, there you go, we need 17 bags of cement. An 80-pound bag of concrete yields 0.60 cubic feet, or 0.0222 cubic yards, covering roughly 3.6 square feet up to a typical depth of 2 inches for excavation or backfills, and 1.66 bags of 80-pound concrete will yield 1 cubic foot of landfill. Weight of a Cement Bag United States. In the united states, Portland cement is usually supplied in bags having a weight of 94 lbs. (42.6 kg), Canada. Other standards exist in Canada and New Zealand as we find that companies provide cement in bags of 40 kg. UK. In the United kingdom and Ireland, A bag of cement weighs 94 pounds. Concrete mix typically uses five bags of cement, or 470 pounds, per yard of concrete to be poured. Concrete mix includes rocks and sand along with cement. Cement is a masonry binding agent that hardens upon drying. GhQ6.