What is the XRD analysis of rice husk ash?
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XRD analysis of rice husk ash was conducted in several studies. Wang et al. found that the XRD analysis revealed the presence of calcium silicate hydrates in the mortar samples incorporating rice husk ash . Ramadhansyah et al. used XRD to evaluate the performance of rice husk ash blended cement and found that the quantity of expansive gypsum formed by the reaction of calcium hydroxide was reduced in the RHA blended cement compared to ordinary Portland cement . Ogwang et al. analyzed the crystallinity of rice husk ash using XRD and found that amorphous and crystalline forms of silica were obtained at different firing temperatures . Muhammed Koya and Nair conducted XRD analysis on residual rice husk ash and observed the transition of amorphous form to crystalline form . Leskelä investigated the chemical composition and crystalline phase of zeolites synthesized from rice husk ash using XRF and XRD .
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01 May 2021 20 Citations | The XRD analysis of rice husk ash in the provided paper is used to determine the crystallinity of the ash at different firing temperatures of 600, 800, and 900 ℃. |
| The paper mentions that XRD analysis was conducted to check the transition of amorphous form to crystalline form in the residual rice husk ash. | |
| The XRD analysis in the paper shows that the use of rice husk ash (RHA) blended cement reduces the potential of ettringite and gypsum formation, improving the resistance of concrete to sulfate attack. | |
| The provided paper does not mention XRD analysis of rice husk ash. |
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Study about rice husk density?4 answersThe density of rice husk plays a crucial role in various applications as indicated in the research papers. Studies have shown that the addition of husks to rice bran affects the physical properties, leading to changes in specific gravity and bulk density. Furthermore, the incorporation of rice husk ash in aluminum-based composites impacts the density of the final product, with powder metallurgy technology offering a cost-effective method to achieve desired properties. In rotational moulding, the addition of rice husk as a filler in high-density polyethylene composites influences the physical characteristics, including density, of the resulting polymer composites. Additionally, the effects of bulk density on the structure and combustion characteristics of rice husk char were studied, highlighting how different bulk densities impact the char's properties and reactivity.
What is XRD analysis?5 answersXRD analysis is a non-destructive technique used for characterizing crystalline materials. It provides information about the structures, phases, crystal orientation, and other structural parameters of a sample. XRD patterns are obtained by measuring the constructive interference of X-ray beams scattered at specific angles from the atomic planes in a crystal lattice. This technique is widely used in various industries such as chemical, mining, iron, metallurgy, and steel industries for mineral characterization. XRD can be applied to a wide range of sample sizes and requires minimal or no sample preparation. It can provide vital information about crystal geometry, compound identification, arrangement of atoms, residual stresses, microstrains, and texture analysis. XRD is also used in the characterization of iron ore, sinter, and pellets in the field of iron ore processing and sinter production. Additionally, XRD is an essential tool for characterizing thin films of electroceramic materials.
Can rice husk be used as a cement replacement in concrete?5 answersRice husk can be used as a partial replacement for cement in concrete. The use of rice husk ash (RHA) as a cement substitute has been studied extensively. It has been found that RHA exhibits pozzolanic behavior, making it a suitable alternative to cement. However, the addition of RHA can affect the workability and compressive strength of concrete. The optimal replacement ratio of RHA in concrete has been found to be around 10%. At this replacement level, the concrete shows improved properties and performance, including increased compressive strength. The use of RHA in concrete also provides environmental benefits by utilizing a waste material and reducing the carbon footprint of the construction industry.
What is a rice husk?3 answersRice husk is a waste product generated during the rice milling process. It is an agricultural byproduct that contains organic materials such as cellulose, hemicellulose, and lignin, as well as minerals like silica, alkali, and trace elements. Rice husks have been found to have various applications, including as an adsorbent material for removing toxic metals from water. Activated rice husks have been used to synthesize materials for adsorbing heavy metal ions, such as nickel. Additionally, rice husks can be a source of cellulose fibers and silica nanoparticles, which have potential applications in various industries. Silica nanoparticles synthesized from rice husks have been studied for their potential use in dental materials, as they can improve mechanical properties. Furthermore, rice husks can be converted into bioenergy, and the solid residue obtained from this process can be used to produce carbon and graphene nanostructures.
What are the properties of rice husk?3 answersRice husk has several properties that make it useful in various applications. It consists mainly of silica, which is a key component in many commercial and industrial products. When used in concrete production, rice husk ash can reduce or eliminate the alkali-silica reaction caused by glass sand and cement slurry, while also improving the mechanical properties of the concrete. It can be used as a substitute for cement in concrete, enhancing the strength parameters of the material. Additionally, the use of rice husk ash as a cement substitute can increase the compressive strength of concrete, with the highest increase observed at a 5% replacement level. Overall, rice husk ash offers a sustainable and affordable source of silica, reducing pollution and providing benefits in various industries and construction materials.
What are the quantity of rice husk ash can be added to per kg of soil?5 answersThe quantity of rice husk ash that can be added to per kg of soil varies in the different studies. In one study, the optimum percentage of rice husk ash was identified as 10%. Another study found that the maximum strength can be sustained by the modified samples with 8% of rice husk ash content. In a different study, the optimum percentage of rice husk ash observed was 12%. Additionally, another study used rice husk ash contents ranging from 5% to 20% by dry weight of soils. Therefore, the quantity of rice husk ash that can be added to per kg of soil can range from 8% to 12% based on the studies mentioned.