It is pneumatically projected at high velocity onto a surface. Sprayed concrete - it is fabricated in the same way as ordinary concrete, but the way of placing it differs. Used in areas where storm water is an issue. Permeable concrete - water is able to pass through it. Vacuum concrete - a higher quantity of water is added to the concrete mix, and then the mixture is poured into the formwork. Pumped concrete - used for high rise buildings. Stamped concrete - ordinary concrete with some little differences. Roller compacted concrete - very small amount of cement in mixture. Lime concrete - lime is used as a binding material with aggregates. Used to build highways, airports, and embankments. Rapid hardening concrete - mostly used in underwater construction and road repairing.Īsphalt - the combination of aggregates and asphalt. Glass concrete - recycled glass is used as an aggregate. Prestressed Concrete - a special type of reinforced concrete in which the reinforcement bars are tensioned before being embedded in the concrete.Īir-entrained concrete - specially prepared plain concrete in which air is entrained in the form of thousands uniformly distributed particles. Precast concrete - the term refers to prefabricated concrete blocks. In this concrete type, steel in various forms is used as reinforcement to give a very high tensile strength. Reinforced concrete - most important type. It is mostly used in atomic power plants (good radiation protection). The density varies between 3000-4000 kg/m³. High-density concrete - also called heavy weight. Lightweight concrete - density lower than 1920 kg/m³. Made of cement, sand and coarse aggregates. Ordinary or plain concrete - one of the most commonly used. Assuming 5% is lost to waste and spillage - voila! We need 284 bags of concrete.Ĭoncrete is produced in a variety of compositions, finishes and performance characteristics to meet a wide range of needs. The total weight of concrete that we need is 16,201.03 lb. We need 4 cubic yards of concrete our producer sells concrete in bags weighing 60 lb with a 150 lb/cu ft density. In our example, let's leave the default measures. Experienced contractors usually assume 5-10%. To be safe, account for spillage and waste.If not, again, change it to the appropriate number. Check if the weight of a single bag of concrete is the same as the default already given (60 lb).Now, the total weight of concrete you need is shown.Check if the density of the concrete from a particular producer is the same as the default value in our calculator (150 lb/cu ft).Once we have the above measurements, we can get to the essence of the matter. In our example, we are paving 36 square feet. Other times, you'll just know the area that needs to be paved - feel free to provide any of these values. Sometimes, you'll know how many slabs you need. To learn more about cubic yards, visit our cubic yard calculator. As construction elements are usually measured in feet, our calculator converts the volume into cubic yards - in our example, 4 cu yd (108 cubic feet). Pre-mixed concrete is usually sold by the cubic yard, and this unit is used by default. So let's say we have 4 concrete elements, each 3 feet long, 3 feet wide, and 3 feet high. You can change them to any other unit by simply unlocking the field (the padlock button). Now you know how many bags you truly need.Īll dimensions are given in feet by default. Provide the size of the bag so we can find out how much concrete is produced per bag.įinally, you can provide the waste ratio - how much you think you will lose via spillages, defective elements, and other unfortunate events. Given the volume we just calculated and the concrete's density (again, you'll find this info on the bag we provided a common value, but it varies), you can calculate the weight of all your elements. Provide the dimensions (length, width, and height) and quantity of your concrete slabs or an area that you want to pave.ĭetermine the weight of all of those elements - this is how bagged concrete is sold they tell you how much the concrete from the bag will weigh (for example, you'll get 60 pounds of concrete out of one bag). First, you need to estimate the volume of concrete that you need.
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