Weight of Concrete were different for every mix. When i still in College, i always informed that Weight Of 1m cubic Concrete were 2200 Kgs, and the weight of Reinforced Concrete were 2400 Kgs per cubic meters.

Today, i were works at one of big Precast Concrete Company at my Country, at our factory the weight of concrete per cubic meters already reach 2425 Kgs!. It caused by the Compressive Strength that used at my working place were K350 (350 Kgs/sq-cm), and the usual compressive strength that I use at College were only at K175 (175 Kgs/sq-cm)

According to the Portland Cement Association, Weight of Concrete could described as below :

Concrete is a mixture of cement, coarse and fine aggregates, water, and sometimes supplementary cementing materials and/or chemical admixtures. A normal weight concrete weighs approximately 2400 kg/m3 (145 lbs/ft3). The unit weight of concrete (density) varies, depending on the amount and density of the aggregate, the amount of air that is entrapped or purposely entrained, and the water and cement contents, which in turn are influenced by the maximum size of the aggregate.

Fresh concrete is measured in a container of known volume to determine density (unit weight). Scale must be sensitive to 0.3% of anticipated mass of sample and container. Size of container varies according to the size of the aggregate, the 7-L (0.25-ft³) air meter container for up to 25-mm
(1-in.) nominal max. size aggregate: 14-L (0.5 ft³) container for aggregates up to 50-mm (2-in.).
Container should be calibrated at least annually (ASTM C 1077).

Weight of Concrete vs Density of Concrete

The density of concrete is a measure of its unit weight. Concrete is a mixture of cement, fine and coarse aggregates, water, and sometimes some supplementary materials like fly ash, slag, and various admixtures.

A normal concrete’s weight were 2400 kg per cubic meter or 145 lbs per cubic foot (3915 lbs per cubic yard).

The unit weight of concrete (density) varies depending on the amount and density of the aggregate, the amount of entrained air (and entrapped air), and the water and cement content.

Weight of concrete, how to calculate?

• Measure the height, length and width in feet of the area that will be filled in with concrete. If the form is not finished, find these measurements from the blueprints of what you are building.
• Multiply the height, length and width to find the volume of the concrete. The unit of measurement for this volume is cubic feet.
• Multiply the volume in cubic feet by 143.38 lbs./ft.^3. This product is the weight in pounds of concrete that will fill the volume.
• Multiply the volume in cubic feet by 2300 kg/m^3. This product is the mass in kilograms of concrete that will fill the volume. If you would like to find the weight, multiply the mass in kilograms by 9.8 m/s^2. This new product is the weight of concrete in Newtons.