abrasion index and silica content
PORE STRUCTURAL AND FRACTAL ANALYSIS OF THE …
tance, such as the addition of silica fume.6,9,11,13 Silica fume, a by-product from the manufac-ture of ferrosilicon and silicon metal, is a highly pozzolanic material consists mainly of submicron spherical particles of silicon dioxides.14,15 Gener-ally, the compressive strength and abrasion resis-tance of concrete increase with the silica fume ...
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(PDF) A Statistical Comparison of Bond Ball Mill …researchgateA Bond Work index mill ball charge and closing screen …sciencedirectRecommended to you based on what's popular • FeedbackFriction, Abrasion and Crack Growth Behavior of In …
WEBInfluence of filler morphology and surface modification of silica on the end performances of the rubbers like dynamic friction, abrasion index, and fatigue crack …
Design and Implementation of Three-Layer Mesoporous Silica …
A three-layer tri-wavelength broadband antireflective (AR) coating has been successfully fabricated on quartz substrate via a sol–gel route using acid-catalyzed silica sols. An ethylene oxide-propylene oxide-ethylene oxide triblock copolymer is used as a template to prepare ordered mesoporous SiO2 films. Assisted by Filmstar thin film design …
Abrasion erosion characteristics of concrete made with
For instance, Liu carried out an experiment to investigate the effect of silica fume on the abrasion resistance of hydraulic concrete containing surface cracks [1]. The test results indicated that the abrasion rate of concretes with 5% and 10% silica fume, prepared at water to cementitious materials ratio of 0.38 and 0.40, showed a decrease of ...
Sol-gel preparation of antireflective coatings with abrasion resistance
It is a common way to adjust the mechanical and optical properties of the ARCs by mixing base-catalyzed silica sol and acid-catalyzed silica sol together, which named base/acid two-step catalysis (Cai et al., 2014). The abrasion resistance would be optimized by increasing acid-catalyzed sol content.
Abrasiveness evaluation of silica and calcium carbonate used …
The amount and pattern of dentin abrasion may be closely related to factors such as the type, content, characteristics (e.g., size, shape, hardness, and homogeneity) of the abrasive, other ...
Characterisation and properties of polyisoprene (IR
The abrasion resistance index was calculated from abrasion loss in the volume of standard rubber and test rubbers measured under the same specified conditions and expressed as a percentage. An index number greater than showed that the test compound was more resistant to abrasion than the standard rubber under the same …
abrasion index and silica content
The increasing in C 1 caused the increases in tensile strength and abrasion index and the decrease in heat build-up The optimum properties of rubber with silica loading at 30 phr was achieved by adding 2 000 gÂmol-1 HTNR at a loading of 8 w/w of silica content However for silica-reinforced NR TESPT provided better properties than HTNRs...
A Review of Additives and their Effects on the
The addition of PDMS to the silica sols improved the hydrophobicity and abrasion-resistance of the coating, and prevented to some extent the coating from cracking which occurred in a pure ...
Broadband antireflective double-layer mesoporous silica …
To enhance the efficiency of solar cells, a broadband double-layer antireflective (AR) coating with excellent transmittance and abrasion-resistance, was successfully fabricated using two layer mesoporous silica coatings. Both layers were prepared via a solvent evaporation self-assembly method in which the top- and
Durable silica antireflective coating prepared by combined …
A durable silica antireflective coating with pronounced abrasion and environmental resistances was prepared by the combined vapor treatment of ammonia and KH570. The transmittance of modified coating decreased by only 0.08% after being exposed to a high humid environment for 60 days.
Determination of Abrasiveness in Copper-Gold Sulfide …
The outcome of this test is the Bond abrasion index (Bond Ai), which finds widespread use among metallurgists and suppliers of consumables for crushers and …
abrasion index and silica content
AR silica coatings exhibiting more than 6% increase in transmittance in the near UV/visible spectral range can be obtained at an optimized refractive index, thickness, and surface roughness. The abrasion test showed that the silica coatings exhibited sufficient structural durability due to continuous silica nanostructures and low surface roughness.
The relationship between Los Angeles abrasion …
The higher the RCGA content, the lower the strengths and elastic modulus, and the more the degradations of the abrasion, impermeability, and freeze-thaw resistance of concrete. In addition, the ...
Preparation of antireflective coatings with high
The transmission spectra were measured with an UV–vis spectrophotometer (Mapada, UV-3100PC). In the case of abrasion-resistance test, the silica coatings prepared by a base/acid two-step catalyzed sol–gel process were rubbed 3000 times using an abrasion-resistance machine (DZ-8103, Dongguan City Dazhong Instrument CO, LTD.).
Friction, Abrasion and Crack Growth Behavior of In-Situ and …
Figure 6 shows the abrasion resistance index (ARI) of the unfilled vulcanizate, in-situ silica and precipitated silica-filled and their respective silane modified composites. The unfilled gum vulcanizate exhibits least ARI and this is due to the poor physical properties of the gum rubber, where the rubber surface is easily cut-out by the ...
Analysis of effect of modification of silica and carbon black …
Silica and carbon black (CB) co-filled rubber composite was widely used for tire tread and other rubber products because of combined advantages of binary fillers, such as low hysteresis, good abrasion resistance, and reinforcement. Numerous studies have been focused on the filler–rubber interaction with the aim of obtaining optimum performances. …
The correlation of tear deviation and resistance with the …
1. Introduction. Widespread use of carbon black in rubber was first initiated by the discovery that the abrasion resistance and the toughness of gum rubbers can be significantly improved upon the introduction of carbon black [1].Similarly, silica has long been a vital component of the tread for off-road tires to enhance the cut and chip …
Sol-gel preparation of antireflective coatings with abrasion resistance
The relationship between refractive index and porosity of porous materials is given by the following equation: (1) Porosity = 1-n p 2-1 / (n d 2-1) where n p and n d refer to the refractive index of porous material and dense material, respectively. In this paper, n d = 1.46 is the refractive index of dense silica. According to the equation, the ...
Sol–gel derived near-UV and visible antireflection coatings …
This paper reports a facile means to gradually tailor refractive index from an ultra-low-n of 1.10–1.45 based on hollow silica nanospheres hybridized with acid-catalyzed silica. The influences of the hybridization on refractive index, thin-film uniformity, and roughness were systematically investigated. The single-layered antireflection (AR) …
Effects of silica fume type and cementitious material content …
Table 1 lists the details of the test specimens, and the variables were silica fume types and cementitious material contents. A total of six specimens of concrete were designed: Si-Ⅰ and Si-Ⅱ silica fume with respective SiO 2 purities of 94.97 % and 97.28 % were selected. The cementitious material contents were set as 445, 475, and 500 kg/m …
Abrasion Index And Silica Content
Abrasion Index And Silica Content T16:02:02+00:00 Introduction to Crushing. The total silica content of a rock issilica The total silica content of a rock is decisive for its abrasive properties: The higher the silica content, the higher the wear on the crusher liners From experience we know that there is a approximate relationship ...
Thermal stability and abrasion resistance of polyacrylate/nano-silica
The abrasion resistance of the PAE/SiO 2 hybrid coatings was improved with the addition of nano-silica particles; the optimal SiO 2 content was identified. When adding 5 and 10 phr nano-silica particles, GR values of the PAE/SiO 2 -5 and PAE/SiO 2 -10 coatings increase to 92.9 and 95.9 %, respectively, from the 89.4 % of the neat PAE …
(PDF) Toothpaste Abrasion and Abrasive Particle Content
and four model toothpastes with increasing content of hydrated silica (2.5, 5.0, 7.5, 10.0 wt%). The viscosity of the model toothpaste formulations was kept constant by means of varying the content of
Friction, Abrasion and Crack Growth Behavior of In …
Friction, Abrasion and Crack Growth Behavior of In-Situ and Ex-Situ Silica Filled Rubber Composites. Materials (Basel). 2020 Jan 7;13 (2):270. doi: …
Designing multifunctional silica coatings for enhanced …
However, in this work, a decrease in the refractive index of the mix silica coatings was observed with the increase in weight ratio of acid-catalyzed silica sol from 0 to 20%. ... 1.178, and 1.394 respectively. S-40% coating has a high refractive index and excellent abrasion resistance and the refractive index of S-20% is close to 1.17, which ...
Effects of silica fume on the abrasion resistance of low-heat …
In this work, the effects of silica fume type (Si-Ⅰ, Si-Ⅱ) and silica fume content (0%, 3%, and 5%) on the abrasion resistance and other mechanical properties of LHP cement concrete were studied using rotating jet method, and the correlation between the abrasion resistance and other mechanical properties was quantified.
Preparation of humidity, abrasion, and dust resistant …
To suppress the Fresnel reflections at the interface between air and solar glass, an ideal single-layer AR coating with a quarter-wavelength optical thickness has a refractive index of 1.23 [4], [5], [6], which need to introduce a certain porosity, around 55%, into a dense material in nature (e.g., silica) according to the effective medium ...
Experimental Evaluation of the Effect of Water-Cement Ratio …
The compressive strength apparatus measuring-The abrasion strength of cubic samples of 150×150×150 mm after 28 days in water sand blast way were defined according to ASTM C 418 standard.
Toothpaste Abrasion and Abrasive Particle Content: …
Toothpaste Abrasion and Abrasive Particle Content: Correlating High-Resolution Profilometric Analysis with Relative Dentin Abrasivity (RDA) Dent J (Basel). 2023 Mar 12 ... PMMA plates were tested in a toothbrush simulator with distilled water and four model toothpastes with increasing content of hydrated silica (2.5, 5.0, 7.5, 10.0 wt%). …
Materials | Free Full-Text | Friction, Abrasion and Crack Growth …
The article focuses on comparing the friction, abrasion, and crack growth behavior of two different kinds of silica-filled tire tread compounds loaded with (a) in-situ generated alkoxide silica and (b) commercial precipitated silica-filled compounds. The rubber matrix consists of solution styrene butadiene rubber polymers (SSBR). The in-situ …
Introduction to Rock and Soil Abrasivity Index (RSAI)
Introduction to Rock and Soil Abrasivity Index (RSAI) MohsenMosleha, WeiHub, JamalRostamib. Show more. Add to Mendeley. …
Toothpaste Abrasion and Abrasive Particle Content: …
The mean roughness values (Ra, Rz and Rv in µm) and the average volume loss (in µm 3) of the four model toothpastes with increasing hydrated silica content (2.5, 5.0, 7.5, 10.0 wt%), a reference that was only brushed with distilled water (i.e., without hydrated silica); and the tested commercial toothpastes are given in Table 4. The …
Silica-Reinforced Natural Rubber: Synergistic Effects by …
with little change in the treadwear index (abrasion re-sistance) and wet traction [15]. e retraction behavior of ... (parts per hundred rubber) and silica content in the hybrid filler is varied as ...
Table of Bond Abrasion Index for Varied Minerals …
The Bond Abrasion Test determines the Abrasion Index, which is used to determine steel media and liner wear in crushers, rod …
(PDF) A comparative study of the cure …
Mechanical properties such as tensile strength, elongation at break, modulus at 300 % elongation, hardness, specific gravity, swelling index, flame retardency and abrasion resistance were studied.
Characterisation and properties of polyisoprene (IR
The main objective of this study was to develop polyisoprene/polybutadiene rubber blends for improved abrasion resistance using silanised silica as a nano-filler. …
Introduction to Rock and Soil Abrasivity Index (RSAI)
The PSU Silica Rock used in testing was a commercially crushed and screened sand, whereas other rock samples were in the form of cores or blocks. ... The linear curve fit has a R-squared of 0.64. This is not a surprise since CAI is an abrasion index of intact rock which involves rock strength, as noted earlier, and it does not apply …
In-Situ and Ex-Situ Silica Filled Rubber Composites
4. Conclusions. The present work has discussed the influence of in-situ silica and precipitated silica on friction, abrasion, and crack growth properties of SSBR rubber. For better understanding ...