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porosity
n (pl -ties ) 1. the state or condition of being porous 2. geology, the ratio of the volume of space to the total volume of a rock
From Medieval Latin porōsitās, from Late Latin porus pore²
pore
vb (intr) 1. (foll by over) to make a close intent examination or study (of a book, map, etc) he pored over the documents for several hours
2. (foll by over, on, or upon) to think deeply (about)
3. (foll by over, on, or upon rare) to look earnestly or intently (at); gaze fixedly (upon)
pore 2
n anatomy zoology 1. any small opening in the skin or outer surface of an animal
2. botany, any small aperture, esp that of a stoma through which water vapour and gases pass
3. any other small hole, such as a space in a rock, soil, etc
void
adj 1. without contents; empty
2. not legally binding, null and void
3. (of an office, house, position, etc) without an incumbent; unoccupied
4. (postpositive; foll by of) destitute or devoid, void of resources
5. having no effect; useless, all his efforts were rendered void
6. (of a card suit or player) having no cards in a particular suit, his spades were void
n 1. an empty space or area, the huge desert voids of Asia
2. a feeling or condition of loneliness or deprivation
3. a lack of any cards in one suit, to have a void in spades
vb (mainly tr) 1. to make ineffective or invalid
2. to empty (contents, etc) or make empty of contents
3. (also intr) to discharge the contents of (the bowels or urinary bladder)
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What is the difference between void and porosity of materials?
Void refers to the empty spaces or gaps within a material, while porosity is a measure of the volume of these voids relative to the total volume of the material. Porosity is expressed as a percentage, indicating how much of the material's volume is made up of voids. In essence, voids are the physical features, whereas porosity quantifies the extent of those features in relation to the entire structure.
How do you calculate porosity of concrete?
Porosity of concrete can be calculated by determining the volume of voids within the concrete relative to its total volume. This is typically done by measuring the weight of a dry concrete sample, then submerging it in water to find its buoyant weight. The difference in weight provides the volume of the voids, which is then divided by the total volume of the concrete sample and multiplied by 100 to express it as a percentage. The formula is: Porosity (%) = (Volume of voids / Total volume) × 100.
Describe the difference between porosity and permeability?
Porosity refers to the empty spaces or voids in a material, while permeability is the ability of a material to allow fluids to flow through it. Higher porosity means more empty spaces, but that doesn't always translate to good permeability; permeability also depends on the connectivity of these pores.
What is the porosity of the sand sample(The sediment volume for each sample is 400ml.)?
To determine the porosity of a sand sample, you need to measure the volume of void spaces between the sand particles in relation to the total volume of the sample. Porosity is calculated using the formula: ( \text{Porosity} = \frac{\text{Volume of voids}}{\text{Total volume of sample}} ). If the sediment volume of each sample is 400 ml, and you know the volume of voids, you can plug that value into the formula to find the porosity percentage. Without the specific volume of voids, the exact porosity cannot be calculated.
What term denotes the percentage of open space or voids in a material?
Porosity
What is porosity of brick?
Porosity of brick refers to the amount of open space or voids within the brick material. Higher porosity means more voids, which can affect properties like strength, water absorption, and thermal insulation of the brick. Brick porosity is important to consider for various applications, such as building construction, where it can impact performance and durability.
Describe how particles affect the porosity of an aquifer.?
Particles in an aquifer, such as sand, silt, and clay, significantly influence its porosity by determining the amount and size of the spaces between them. Larger particles, like coarse sand or gravel, typically create larger voids, leading to higher porosity and enhanced water flow. In contrast, smaller particles, such as clay, fill these voids and reduce overall porosity. Thus, the composition and arrangement of particles are crucial in defining an aquifer's ability to store and transmit groundwater.
What is the volume of voids of open space in a rock or unconsolidated material?
The volume of voids in rock or unconsolidated material is known as porosity. It represents the percentage of open spaces within the material where fluids can reside. Porosity is important in determining the material's ability to store and transmit fluids like water or oil.
When A dry soil sample has a volume of 500 mL After 400 mL of water are added to the soil the soil becomes saturated with 150 mL of surface water left on top What is the porosity of the soil?
Porosity is calculated by dividing the volume of voids (pores) by the total volume. In this case, the volume of voids is the difference between the volume of water added and the volume left on top of the saturated soil (400 mL - 150 mL = 250 mL). The total volume is the sum of the dry soil volume and the water added (500 mL + 400 mL = 900 mL). Therefore, the porosity of the soil is 250 mL / 900 mL, which is approximately 0.28 or 28%.
What three factors affect a materials porosity?
Three main factors that affect a material's porosity are its particle size distribution, packing arrangement of particles, and the presence of any voids or gaps within the material structure. Smaller particle sizes, looser packing, and higher presence of voids generally lead to higher porosity in a material.
What is the difference between voidage and porosity?
"Porosity" can be used to refer to voidage of a granular material. Pporosity could also denote the relative volume of pores, cracks and spaces in the solid body, while voidage deals exclusively with the amount of spaces between particles in relation to the overall volume occupied by the granular material. Porosity is measure of void spaces in a material.voidage means the relative amount of space between materials that are tightly packed ..........
What is the volume of voids or open space in a rock or unconsolidated material?
The volume of voids or open space in a rock or unconsolidated material is called porosity. It is a measure of the amount of empty space within the material. Porosity is expressed as a percentage and can vary based on factors such as grain size, sorting, and cementation.
