Standard Portland cement concrete has a compressive strength of 3,000 to 6,000 pounds per square inch (psi), or about 20,684.27 to 41,368.54 kilopascals (kPa). In contrast, its tensile strength is only 300 to 700 psi (2,757.9 to 4,826.33 kPa). This can be a problem for tall buildings.

Learn MoreCONCRETE MIX WITH AIR 25 MPa, 30 MPa, 35 MPa or 40 MPa DESCRIPTION: CONCRETE MIX WITH AIR is a pre-blended mix of fine and coarse aggregate and Type 10 Portland cement packaged in 30 kg sacks and in one cubic yard (.76 m3) bulk bags. It is available in compressive strengths of 25 MPa, 30 MPa, 35 MPa, and 40 MPa.

Learn MoreCost per Bag. A concrete slab 36" X 36" at a depth of 4", has a volume of 3 ft³ = 10 x 40 # bags. 10 Bags. Total Bag Weight 400 lb. Calculated at 133.3 lb per ft³ - Allow extra for waste. Pre-Mix Concrete Bag Calculator Calculated at 133.3 lb per ft³ - Allow extra for waste. Cubic Feet.

Learn MoreQuikrete 80 lb. Concrete Mix can be used Quikrete 80 lb. Concrete Mix can be used for building or repairing foundation walls, sidewalks, curbs, steps and ramps and for setting posts. This concrete mix is designed for pouring concrete 2 in. thick or more.

Learn MoreConcrete slab cost. This calculator makes working the cost of a concrete slab easy - once you know how much concrete you need (in bags) and how many slabs you'll produce out of it, simply provide the price of the bag and you'll receive the concrete slab cost, a cost to pave your desired area, cost per unit of volume and the total cost of the material you need.

Learn MoreBulk concrete mixers usually require diesel gasoline and are mounted on wheels so you can easily move them around your site. Some models can mix as many as 110 litres in just six minutes. For small to medium-sized projects, a tip-up concrete mixer is a good choice. These aren’t as large as bulk mixers, but can still mix quite a lot of concrete.

Learn MoreConcrete is a mixture of aggregate (usually gravel), sand, cement and water. Although mixing your concrete by hand will save a substantial amount of money, it is definitely back breaking work and for any slab that requires more than 1 cubic yards of concrete one should consider using a powered portable concrete mixer that operates using an

Learn MoreTraditional concrete is made of water, cement, air, and an aggregate mixture of sand, gravel, and stone. The right proportion of these ingredients is key for achieving a higher concrete strength. A concrete mixture with too much cement paste may be easy to pour—but it will crack easily and not withstand the test of time.

Learn MoreReading time: 1 minute Quantity of materials such as cement, sand, coarse aggregates and water required per cubic meter of concrete and mortar for different mix proportions varies with the mix design of the concrete and mortar respectively. Following table gives the estimated quantity of materials required per cubic meter of mortar and concrete for various nominal mixes.

Learn MoreCoarse Aggregate = (Coarse Aggregate Part / Concrete Parts ) * Concrete Volume = (3/5.5) * 2 = 1.09 m 3 . Water Cement Ratio. According to IS 10262 (2009), Assuming Water-Cement Ratio for the Concrete as 0.45. Required Amount of Water = W/C Ratio X Cement Volume

Learn MoreHow Many Concrete Bags Equal A Yard. Concrete is made from cement, sand and aggregate. When mixed with water it hardens to form concrete. The strength of the concrete is measured in pounds per square inch or psi. The psi of concrete is listed in a number on the bag. For example a Quikrete bag may say 3500 or 5000.

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