What is the formula for calculating the relative water content, does anyone know, tell me, thank you

The formula for calculating the water content is as follows:Soil moisture content is expressed as a percentage by weightSoil moisture content is expressed as a percentage of the weight of water contained in the soil to the weight of the dried soil, and the calculation formula is as follows:

Soil moisture content (weight) Original soil weight Drying soil weight) Drying soil weight 100 Water weight Drying soil weight 100.

Soil moisture content is expressed as a volumetric percentageSoil moisture content is expressed as a percentage of soil moisture volume per unit of soil volume, and is calculated as follows:

Soil moisture content (volume) Water volume Soil volume 100 Soil moisture content (weight) Soil bulk density.

Soil moisture content is expressed in terms of the thickness of the water layerThe water content in the soil layer at a certain depth is converted into mm representation of the depth of the water layer, and the calculation formula is as follows:

Water layer thickness (mm) Soil layer thickness (mm) Soil moisture content (volume).

Relative water contentSoil water content is converted to a percentage of field water holding capacity or total water storage to express the relative content of soil water as follows:

Relative soil moisture content in dryland ( ) Soil moisture content Field water holding capacity 100 .

Relative soil moisture content of paddy field ( ) Soil moisture content Total water storage 100

The content is calculated by n=c·v. Refers to the percentage of the weight of the solute contained in the solution. When a soluble substance is dissolved in a solvent, the density of distribution in that solvent is expressed as a percentage, which is called the percentage concentration of the solution, which is often expressed as c%.

The formula for moisture content is: moisture content = (wet weight - soil particle weight) 100% soil grain weight.

The water content of the rock is the ratio of the water weight of the rock in the natural state to the dry weight of the rock, which is expressed as a percentage, that is, the water absorption capacity of the rock generally depends on the number of pores of the rock and the connectivity of its fine cracks, also known as the water content.

Rock is a solid aggregate of one or several minerals and natural glass with a stable shape. Rocks composed of one mineral are called monooretic rocks, such as marble composed of calcite, quartzite composed of quartz, etc.

Rocks composed of several minerals are called complex minerals, such as granite composed of minerals such as quartz, feldspar and mica, gabbro composed of mafic plagioclase and pyroxene, and so on. Liquids such as oil, gases such as natural gas, and loose sand and mud that do not have a certain shape are not rocks.

Criteria for moisture content.

Moisture content is also an important performance indicator for containerboard. The so-called moisture content refers to the amount of moisture in the base paper or cardboard, expressed as a percentage. The moisture content standard of carton base paper varies due to different paper grades (see the requirements of the relevant standards above), and the moisture content has a great impact on the strength of the carton body.

Therefore, this is also the main reason why moisture content has become one of the three heavy defect inspection items of cartons. To determine the moisture content of base paper or cartons, the more accurate detection method is to use the drying method, that is, to sample a number of pieces from different parts, weigh about 50g of the sample with a balance, and tear it into pieces and put it in the oven, dry to constant weight, and then find its moisture content.

Calculation formula of water content soil water content (weight) Raw soil weight - drying soil weight) Drying soil weight 100 Water weight Drying soil weight 100 x0d. The difference between moisture content and water contentMeaning: Different water content: Water content refers to the weight of the water contained in an object. Moisture content Moisture content is a ratio that is the ratio of the amount of water contained in an object to the total weight of the object. Calculation method: Different water content, wet base water content = quality of water contained in the material, mass of water contained in the material + mass of dry matter contained in the material * 100%.

Dry base moisture content = mass of water contained in the material Mass of dry matter contained in the material * 100%. The interchange formula of dry base water content and wet base water content is that wet base water content = dry base water content 1 + dry base water content * 100%.

The formula for calculating the water content is as follows:

1. Soil moisture content is expressed as a weight percentage

Soil moisture content is expressed as a percentage of the weight of water contained in the soil to the weight of the dried soil, and the calculation formula is as follows:

Soil moisture content (weight) Original soil weight Drying soil weight) Drying soil weight 100 Water weight Drying soil weight 100.

2. Soil moisture content is expressed as a volume percentage

Soil moisture content is expressed as a percentage of soil moisture volume per unit of soil volume, and is calculated as follows:

Soil moisture content (volume) Water volume Soil volume 100 Soil moisture content (weight) Soil bulk density.

3. Soil moisture content is expressed by the thickness of the water layer

The water content in the soil layer at a certain depth is converted into mm representation of the depth of the water layer, and the calculation formula is as follows:

Water layer thickness (mm) Soil layer thickness (mm) Soil moisture content (volume).

There are two ways to express the moisture content of a material: wet-based representation and dry-based representation. Wet-based notation is calculated based on the mass of the material, whereas dry-based notation is calculated on the basis of the solid dry matter in the material.

Formula for calculating wet base water content:

Wet base moisture content = mass of water in the material (mass of water in the material + mass of dry matter in the material) * 100%.

Dry base moisture content = mass of water contained in the material Mass of dry matter contained in the material * 100%.

Interchange formula for dry and wet basis water content:

Wet base moisture content = dry base water content (1 + dry base water content) * 100%.

Dry base water content = wet base water content (1-wet base water content) * 100%.

The formula for calculating the moisture content depends on what the moisture content isFormula for calculating wet base water content:

Wet base moisture content = mass of water in the material (mass of water in the material + mass of dry matter in the material) * 100%.

Dry base moisture content = mass of water contained in the material Mass of dry matter contained in the material * 100%.

Interchange formula for dry and wet basis water content:

Wet base moisture content = dry base water content (1 + dry base water content) * 100%.

Dry base water content = wet base water content (1-wet base water content) * 100%.

Rock moisture content.

In order to understand the macroscopic mechanical effect of water on stressed rocks, uniaxial compression tests were carried out on sandstone, granodiorite, limestone and marble with different water saturation on the MTS electro-hydraulic servo material test system, and the quantitative results of the uniaxial compressive strength and elastic modulus of these rocks with water saturation were obtained.

The results show that the mechanical effect of water on the stressed rocks is closely related to the water content in the rocks, and the peak strength and elastic modulus of sandstone and granodiorite in the natural state decay rapidly with the increase of water saturation after immersion in water, and the peak strength and elastic modulus of these two rocks basically stabilize when the water saturation reaches a certain value.

Moisture content(Wet weight, soil grain weight) Soil weight 100%.

The water content is an indicator of the actual water content of the rock, and the ratio of the weight of water contained in the pores of the rock (GW) to the weight of the dry rock and soil (gs) is high, and the weight water content is high.

wg）。<

Concept

1. The liquid water existing in snow samples (or soil samples) is often used as a weight percentage.

Plan. in water equivalent.

The water content of the percentage meter is equal to 100 minus the amount of snow (soil).

2. The amount of water contained in a pile of soil, a pool of sewage, a pile of sludge or a batch of sieve residues is usually expressed as a percentage of the weight of the water contained in the total weight.

3. The water content of the leased products manufactured by living organisms and artificial Qi type mu is also measured by weight percentage.

The formula for calculating the water content is as follows:

1. Soil moisture content is expressed as a weight percentage

Soil moisture content is expressed as a percentage of the weight of water contained in the soil to the weight of the dried soil, and the calculation formula is as follows:

Soil moisture content (weight) Original soil weight Drying soil weight) Drying soil weight 100 Water weight Drying soil weight 100.

2. Soil moisture content is expressed as a volume percentage

Soil moisture content is expressed as a percentage of soil moisture volume to unit soil volume, and the calculation formula is as follows: soil moisture content (volume) water volume Soil volume 100 Soil moisture content (weight) Soil bulk density.

3. Soil moisture content is expressed by the thickness of the water layer

The water content in the soil layer at a certain depth is converted into mm representation of the depth of the water layer, and the calculation formula is as follows: water layer thickness (mm) soil layer thickness (mm) soil water content (volume).

4. Relative water content.

Soil water content is converted to a percentage of field water holding capacity or total water storage to express the relative content of soil water as follows: Relative soil moisture content in dryland ( ) Soil water content Field water holding capacity 100. Relative soil moisture content of paddy field ( ) Soil moisture content Total water storage 100