Calculation formula of concrete bulk density (detailed solution)

Dry bulk density of soil = dry density of soil *10.0kn/m3;

Soil dry density = soil particle mass/total soil volume or soil dry density = natural density /( 1+0.0 1* natural water content).

There are many methods for measuring soil bulk density, and the ring knife method is mainly introduced:

Instruments: ring knife (volume 100 cm3), balance (sensitivity 0. 1 g and 0.0 1 g), oven, ring tool rest, sharpener, spatula, aluminum box, wire saw, dryer, etc.

The bulk density of soil indicates the density of soil. The greater the bulk density, the greater the compactness, and the bulk density is also related to the soil quality.

Extended data:

Generally, portland cement, ordinary portland cement, slag portland cement, pozzolanic portland cement and fly ash portland cement can be used to prepare concrete. When necessary, quick-hardening portland cement or other cement can also be used. The performance index of cement must meet the relevant national standards.

The choice of cement grade should be adapted to the design strength grade of concrete. In principle, high-strength concrete is prepared and high-grade cement is selected; Preparation of low strength concrete, choose low grade cement.

If high-grade cement must be used to prepare low-strength concrete, the amount of cement will be less, which will affect the workability and compactness, so a certain amount of admixture should be added. If low-grade cement must be used to prepare high-strength concrete, it will lead to excessive cement consumption and uneconomical, and will also affect other technical properties of concrete.

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