In this paper, the relationship between the particle shape characteristics of manufactured sand and concrete performance is discussed using a morphological …
In this paper, the relationship between the particle shape characteristics of manufactured sand and concrete performance is discussed using a morphological analysis and concrete experiments. The ...
Soil particle shape analysis was conducted on two calcareous sands from Dissa and Matmata in Tunisia and one silica sand from Jumunjin in Korea using an image analysis method. This technique uses complex Fourier shape descriptors and image analysis of sand grains SEM photographs to provide accurate quantification of particle …
The MS particle shape is characterized with digital image analysis based on big sample space. • At the micro scale the surface roughness of MS is lower than RS. • The sand's shape and roughness are no significant factors on its behavior in concrete.
Compared with natural sand concrete, manufactured sand concrete has larger unit water consumption, higher compressive strength, better permeability and frost …
The particle shape parameters of natural sand and limestone manufactured sand were studied by the DIP method. The results showed that compared with the natural sand, the manufactured sand was more ...
Particle morphology, including particle shape and particle size, has significant influence on the shear behavior of granular soils. The effect of particle shape has been investigated in several studies. However, the effect of particle size has not yet been paid much attention. In this study, the effect of particle size on the shear strength …
The particle shape, surface texture and behavior of MS are characterized in this paper. Results indicate that MS has higher roundness and Length-width ratio, and wider …
Biochar and sand particle shape. To qualitatively examine size and shape of biochar and sand particles, we photographed biochar particles and sand particles under a microscope with a maximum zoom of 1:20 (Stereo Discovery.V20, Zeiss, Germany) . To quantitatively characterize particle size and shape we used a Camsizer (Retsch …
DOI: 10.1016/J.CONBUILDMAT.2016.03.201 Corpus ID: 138727823; Characterization of manufactured sand: Particle shape, surface texture and behavior in concrete @article{Shen2016CharacterizationOM, title={Characterization of manufactured sand: Particle shape, surface texture and behavior in concrete}, author={Weiguo Shen and …
Sand particle size distributions (PSD) are used for various purposes in sand control: decision between various sand control techniques, sizing of the filter media (sand screens and/or gravel packs ...
However, due to its irregular shape, rough surface, highly elongated and flaky particle content, poor gradation, and high stone powder (SP, particle size < 0.075 mm) content, manufactured sand is ...
Particle size distribution analysis of sand-sized particles by laser diffraction: an experimental investigation of instrument sensitivity and the effects of particle shape. ... for the hypothesis that the differences between laser analysis and sieving are partly attributable to the effects of particle shape. However, an additional factor is the ...
The packing density, along with shape, is useful in determining amount of paste required. Consider the combined solid particle size distribution. Aggregate Suspension Mixture Proportioning Method (ACI 211.6T) considers packing density.
Sands with a mean particle size of 1.59, 0.89, 0.45, and 0.23 mm (i.e., Sand 10–16, Sand 16–30, Sand 30–50, and Sand 50–100) were used, respectively, to achieve different levels of roughness. Four identical samples were prepared for every level of roughness, and each sample was renewed after six interface shear tests with each …
Particle form is usually measured as the closeness to an ideal shape, and hence form descriptors include the ratios of particle dimensions (which implies the …
In a paper recently published in the journal Materials, researchers studied the influence of the morphological properties of manufactured sand (MS) and their correlation with particle shape and the properties of concrete.Five types of manufactured sands were tested for their mechanical properties, performance, and concrete durability.
A bstract Spherical particles of equal size theoretically may be packed in five different ways, e.g. (1) cubical with a theoretical void space of 47.64%, (2) single‐staggered or cubical ...
Portland cement concrete. Qiang Yuan, ... Cong Ma, in Civil Engineering Materials, 2021. 3.3.3 Aggregate 3.3.3.1 Significance of aggregate. Aggregates are particles of random shape. They can be either in nature as sand, gravel, stones, or rock that can be crushed into particles or obtained from by-products or waste materials from an industrial process.
There are various methods of proportioning for various types of concrete. Packing density method of mix design is the only mix design method used for proportioning normal concrete, high strength concrete, and no-fines concrete and self-compacting concrete. No adequate literature is available on this method.
ABSTRACT Fine particles are often characterized by their particle size and distribution as determined by various analytical instruments. Particle shape may be just as important as particle size. Particle shape, however, is often ignored or disregarded. Image analysis is a technique capable of measuring particle shape factors and providing …
Selecting a bunker sand that is best suited to your specific needs is critical to producing and maintaining quality playing conditions and maximizing bunker longevity. The two properties of bunker sand that will most influence performance are particle size distribution and sand shape. Factors such as drainage, cost, vulnerability to wind and …
Types of Sand & Classification of Sand. Followings are the classification of Sand: Based on the grain size of the particle, sand is classified as Fine Sand(0.075 to 0.425mm), Medium Sand(0.425 to 2mm), and Coarse Sand(2.0 mm to 4.75mm) Based on origin, sand is classified as Pit sand, River sand, Sea sand, and manufactured sand.
Title: Influence of fine aggregates particle shape in the concrete properties Author(s): F. FABRO, G. P. GAVA, H. B. GRIGOLI, L. C. MENEGHETTI Publication: IBRACON Volume: 4 Issue: 2 Appears on pages(s): 191 212 Keywords: fine aggregate, concrete, mortar, particule shape. DOI: Date: 6/15/2011 Abstract: Natural and …
S1 confirms that the sand samples have unique particle size distributions and varying deviations from the ideal packing conditions. A Type-I Ordinary Portland Cement (OPC) with low alkali content was used for the cement-based composites. ... Crushed sand in concrete – effect of particle shape in different fractions and filler …
The shape and texture of crushed sand particles could lead to improvements in the strength of concrete due to better interlocking between particles [1].However, angular fine aggregate produces ...
This present paper focuses on the importance of the geometrical and shape metrics of particles with a size defined by sieving between 20 μm and 2.36 mm, which …
14 2 Particle Size, Size Distributions and Shape 2.1 Particle Size In the ideal world of particle characterization, all particles would be homogeneous spheres. Moreover, they would have uniform properties such as density, chemical composition, color, and opacity. Then, all size measurement methods would yield
how aggregate particle shape influences concrete mixing water requirement and strength. variations in mixing water requirement and strength were measured in 5-1/2-sack, 3 to 4-in. slump concrete containing aggregates from nine sources, all of which were graded to a 1-in. maximum size. tests for the void content of bulk aggregate and the rate …
New experimental data and results from published studies are gathered into two databases to explore the effects of particle shape on packing density and on the …
0.06 to 2mm Medium grain size Sand: very coarse-coarse-medium-fine-very fine) <0.06mm Fine grain size (Clay
Sands with higher roundness value also have higher Length-width ratio. The packing bulk voidage (Table 4) is not only related to the particle shape, the content of the stone powder affects . Conclusions. This paper studied the difference between the MS and RS on the particle shape, the surface textures and the behavior in the concrete.
Note: the crushing value index is parameter crushing mount of the aggregate under a certain compressive load with a standard testing method; the Powder content is the content of particle under the 0.075 mm sieve; the Clay lump content of a sand is the content of soft particle with normal size above 1.25 mm but can be …
It focuses on particle shape characterization, representation and implementation, as well as its important effects. ... microplastics 5, beach sand 6, food grains 7, chemical powders 8, boulders 9 ...
Request PDF | On Jul 1, 2016, Weiguo Shen published Characterization of manufactured sand: Particle shape, surface texture and behavior in concrete | Find, read and cite all the research you need ...
Particle size distribution (PSD) is an essential property of cement. The only standard method to measure the PSD of cement, namely ASTM C115 is limited in scope; this standard describes a method ...
