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 weight concrete weighs 2400 kg per cubic meter or 145 lbs per cubic foot (3915 lbs per cubic yard).
Testing tip: A common mistake many people make is to remove the thermometer to read the temperature. Be sure to read the dial while the thermometer is still inserted into the concrete. SLUMP. Slump tests are applicable for concrete with slumps greater than 1/2 inch and less than 9 inches. Once the concrete sample has been remixed, start taking the slump tests within 5 minutes.
May 02, 2013· ASTM C138 Standard Test Method for Density (Unit Weight), Yield, and Air Content of Concrete - Duration: 4:51. Lehigh Hanson 8,848 views
1.1 This test method covers determination of the density (see Note 1) of freshly mixed concrete and gives formulas for calculating the yield, cement content, and air content of the concrete. Yield is defined as the volume of concrete produced from a mixture of known quantities of the component materials.
Bulk density of concrete is the mass of freshly mixed concrete required to fill the container of a unit volume. Bulk density of concrete reflects the ability of concrete to function for structural support, water and solute movement, and durability. This method helps to calculate the yield of concrete …
Density Calculation Steps
State of the art onsite and lab testing for concrete, asphalt & other construction materials testing. Inspections & designs for septic systems & masonry. . gradation and density. Density testing is performed using nuclear density gages and asphalt cores. Nuclear Density Gauge. Chunk of Asphalt. Core Sample. Soil Characteristics.
As for concrete itself, the density of concrete of normal weight is about 2,400 kg per cubic meter, or 145 lbs. per cubic foot. The concrete density varies depending on the amount and density of the aggregate, how much air is entrapped or purposely entrained, the cement concentration, and the …