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In fine aggregate, particles smaller than 75 microns can lead to deficiencies in properties like workability and affecting the water requirement, while an oversupply of particles smaller than 75 microns can lead to problems like excessive bleeding and segregation. In coarse aggregate, an oversupply of very fine particles (dust) can affect workability and may lead to a lower strength of the concrete due to reduced paste content.
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What is the purpose of adding sodium hexametaphosphate solution to the soil suspension during particle-size analysis?
Sodium hexametaphosphate solution is added to soil suspension during particle-size analysis to disperse soil particles and prevent them from clumping together. This dispersion ensures accurate measurement of particle sizes and prevents errors that could occur if particles were to aggregate during analysis.
What is the surface area of aluminum powder?
The surface area of aluminum powder can vary depending on its particle size and shape. Generally, finer powders with smaller particle sizes will have a higher surface area compared to coarser powders. To determine the specific surface area of aluminum powder, specific tests such as the Brunauer-Emmett-Teller (BET) method or scanning electron microscopy (SEM) would need to be conducted.
How does a laser particle counter work?
Particle characterization plays key role in powder industry especially in particle size analysis. The latest technology of particle characterization is to use a particle size analyzer (also named Particle Size Analyser) running particle size analysis by laser diffraction technology. Laser diffraction is a phenomenon when a light illuminates particles inside an analyzer (analyser) the light is diffracted by the particles in different sizes. The scattered patterns of particle size go through analysis by an analyzer (analyser) and the Particle Size Analysis software gives results of particle size distribution. Particle Characterization by Laser Diffraction is of great significance for material characterization.AS-2011 Laser Particle Size Analyzer (also named Laser Particle Size Analyser) works with principle of Mie Scattering to precisely determine the particle size distribution from 0.1 to 500 micrometer. This equipment has a few advantages all its own. Robust laser diode and innovative photocells optimize the precision of static light scattering and give AS-2011 a longer operational lifetime. Patented optical bench uproots light path deviation, one of the major technical problems in the industry of particle size analysis. User-friendly program and advanced algorism bring accuracy and repeatability qualification to International Norm ISO13320-1 Particle Size Analysis - Laser Diffraction Methods. AS-2011 has become the most reliable and cost-effective LPSA and being widely used in Particle Characterization.By AimSizerhttp://www.aimsizer.com
What is the size of coal?
Coal comes in various sizes, ranging from fine powder to large chunks. The size of coal is typically classified based on its particle diameter, with terms like dust, pebble, lump, and boulder used to describe different sizes. The size of coal can impact its combustion efficiency and suitability for different applications.
Explain how temperature pressure particle size agitation effect solubility?
The more a solution is agitated, the faster the rate of the solution The smaller the particle size, the faster it will dissolve The higher the temperature, the faster rate of dissolving
In what sizes of particle the aggregate are deficient or oversupplied How might this be remedied in a practical way?
If you sell the wrong sizes the customers will return the products and want their money back. This will remedy the problem as you will go out of business.
How do you measure the average size of fine aggregate and coarse aggregate?
The average size of fine aggregate is typically measured using a sieve analysis, where the aggregate is passed through a series of sieves with different mesh sizes to determine the distribution of particle sizes. For coarse aggregate, a similar sieve analysis is conducted, but it often involves larger mesh sizes. The average size can be calculated by determining the weight of aggregate retained on each sieve and then using these weights to find a weighted average particle size. Additionally, tools like the geometric mean can also be employed for more precise measurements.
Does sizes of aggregates affect the compressive strength of concrete?
Larger the size of aggregate will decrease strength of the concrete because surface area of this aggregate is low.Lesser the size of the aggregate will lead to increase the strength of the concrete.Well graded aggregate have all size of particles hence particle interferance is neglected,thus strength of concrete is more.
What is uniformly graded aggregate?
Uniformly graded aggregate consists of particles that are similar in size, leading to a consistent distribution of aggregate sizes within the material. This type of aggregate typically has a narrow range of particle sizes, which can enhance workability and reduce voids in concrete or asphalt mixtures. The uniformity in size can improve the compaction and strength of the final product, making it suitable for specific engineering applications. However, it may also lead to a less efficient packing density compared to well-graded aggregates.
What are the particle sizes of vinegar?
Vinegar is water solution of acetic acid (the concentration is 5-10 %).Particle sizes is not an adequate expression here.
What meant by well graded aggregate?
Well-graded aggregate refers to a mixture of different particle sizes that provides a dense and compact structure in concrete or asphalt. This grading ensures that smaller particles fill the voids between larger particles, resulting in improved workability, reduced void content, and enhanced mechanical properties. A well-graded aggregate can lead to better strength, durability, and resistance to segregation in construction materials.
What is the purpose of adding sodium hexametaphosphate solution to the soil suspension during particle-size analysis?
Sodium hexametaphosphate solution is added to soil suspension during particle-size analysis to disperse soil particles and prevent them from clumping together. This dispersion ensures accurate measurement of particle sizes and prevents errors that could occur if particles were to aggregate during analysis.
What is the formula of mean particle size?
The formula for mean particle size is calculated by summing the individual particle sizes and dividing by the total number of particles. Mathematically, it is expressed as mean particle size = (Σ particle sizes) / total number of particles.
What reactions are affected by particle size?
Particle size can affect various reactions such as dissolution rate, surface area available for reaction, and diffusion rates. Smaller particle sizes increase the surface area, leading to faster reactions, while larger particle sizes can reduce the reaction rate due to lower surface area available for reaction.
What is the importance of sieve analysis?
The preparation or introduction of Sieve Analysis a sample of the aggregate must be obtained from the source. The aggregate, the total weight is required. it should be mixed thoroughly and then reduced to a suitable size for testing in order to prepare the sample.
A whitish sky is evidence that the atmosphere contains?
A mixture of particle sizes
What are the example of sifting?
A piece of screen can be used to separate solids with different particle sizes
