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Littérature scientifique sur le sujet « Natural Resources for tooth powder »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 22 juin 2025

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Articles de revues sur le sujet "Natural Resources for tooth powder"

Himanshu*, Indu Saini Dr. Kshitiz Aggarwal. "Review On Natural Tooth Powder for Oral Hygiene Care." International Journal of Pharmaceutical Sciences 3, no. 5 (2025): 4162–67. https://doi.org/10.5281/zenodo.15511157.

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Oral hygiene is an essential component of overall health, and the increasing awareness of the adverse effects of synthetic oral care products has driven the demand for natural alternatives. Herbal toothpowders have emerged as a promising solution, combining traditional knowledge with modern formulation techniques. These powders typically contain a blend of medicinal herbs such as neem, clove, babul, licorice, and triphala, each offering unique therapeutic benefits including antibacterial, anti-inflammatory, analgesic, and astringent properties. The formulation process involves careful selection, drying, powdering, and blending of herbal ingredients to ensure efficacy and safety. Evaluation parameters like pH, abrasiveness, microbial load, and stability are critical to ensure product quality and consumer acceptability. Herbal toothpowders are favored for being chemical-free, cost-effective, environmentally friendly, and suitable for long-term use. However, challenges such as standardization of herbal raw materials, microbial contamination risks, and lack of clinical validation still hinder their large-scale acceptance. This review aims to provide a comprehensive understanding of the formulation and evaluation of herbal toothpowder, highlighting recent research trends, regulatory considerations, and future prospects. Promoting scientifically-backed herbal products can bridge the gap between traditional remedies and modern oral healthcare, offering safe and effective solutions for maintaining oral hygiene.

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Khadse, Kranti Rajesh, Swati Priya, Rana K. Varghese, Malwika Sisodia, Naveen Kumar Gupta, and Anita Chandrakar. "Up-cycling the dental waste materials: Going green in dentistry." Bioinformation 20, no. 9 (2024): 1124–27. https://doi.org/10.6026/9732063002001124.

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The depletion of natural resources due to the extensive use of various materials in dentistry is a growing concern. A significant contributor to this issue is the lack of recycling practices, leading to the continuous exploitation of these resources. This research aims to explore simple yet effective scientific techniques to up-cycle common dental materials while maintaining their properties. The focus of modern practices should align with the 3R's-Reduce, Reuse, and Recycle. In dental institutions and clinics, materials like dental plaster and dental stone, extensively used for pouring impressions, are completely discarded as waste. This study involves collecting these waste products and evaluating their properties for potential reuse. Additionally, endodontic materials such as stainless steel hand files and rotary Ni-Ti files, typically discarded, can be recycled in metallurgical departments and repurposed into custom-made cast posts and titanium posts, respectively. The wisdom tooth crush technique is explored for its application as autologous graft material in filling bone defects. Discarded alginate impressions, widely used in Prosthodontics, are heated and repurposed as a denture polishing agent and as a fertilizer in agriculture. Excess glass ionomer cement, a common restorative material, can be repurposed into polishing cones and powders, or used as a polishing agent with rubber cups and buffs. Modeling wax, predominantly used in occlusal rim fabrication, can be collected and purified, with 90% of it recoverable without compromising its properties. Finally, discarded dental burs can be repurposed to splint implant impression copings, aiding in the accurate transfer of orientation, a critical step in implant prosthodontics. This study advocates for the adoption of recycling practices in dental colleges and among practitioners to manage and reuse the waste generated in the field. By doing so, the treatment cost can be reduced by 30-40%, and natural resources can be conserved, contributing to the preservation of the Earth's resources.

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Asokan, Sharath, Geetha Priya PR, Sudhandra Viswanath, and B. Kesavaraj. "Effectiveness of a custom-made natural tooth powder on oral hygiene status of children: A randomized controlled trial." Journal of Ayurvedic and Herbal Medicine 5, no. 4 (2020): 125–29. http://dx.doi.org/10.31254/jahm.2019.5402.

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Aim: To evaluate antibacterial, antifungal, antioxidant properties of custom-made natural tooth powder and the effectiveness of custom-made natural tooth powder on the oral hygiene status of children. Methodology: Antibacterial and antifungal properties were determined by agar diffusion method against Streptococcus mutans, Candida albicans and antioxidant properties were determined by DPPH (2,2-diphenyl-1-picryl-hydrazyl-hydrate) assay. Clinical trial included 60 children aged 8 to 11 years. Oral prophylaxis was done and after a washout period of 10 days, baseline Simplified Oral Hygiene index (OHI-S) scores, plaque scores and Streptococcus mutans colony counts were recorded. Children were randomly divided into two groups: Group I children brushed with custom-made natural tooth powder and Group II children used commercially available natural tooth powder twice daily. At the end of 30 days, post intervention data was collected and statistically analyzed. Results: In-vitro trial showed that the custom-made natural tooth powder exhibited both antimicrobial and antioxidant properties. Intragroup assessment of clinical trial showed significant reduction in the OHI-S [Group I (p=0.03), Group II (p=0.01)] plaque scores [Group I (p=0.05), Group II (p=0.006)] and Streptococcus colony counts [Group I (p=0.000), Group II (p=0.000)] in both the groups. But there was no statistically significant difference between the two groups. Conclusion: The newer custom-made natural tooth powder is effective in oral hygiene maintenance and can be a possible alternative to the commercially available natural tooth powder.

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Diwan, P.D. "Formulation and Evaluation of Natural Herbal Toothpowder from locally available herbal Plants." Int. Res. Journal of Science & Engineering, 2024 12, no. 4 (2024): 215–19. https://doi.org/10.5281/zenodo.14198979.

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Herbal tooth powder has been utilized for centuries and many believe it to be an essential part of any teeth cleaning regimen. The aim of the present work was to formulate the herbal tooth powder for prevention of plaque on the tooth surface, dental caries. Spongy and bleeding gums and gingivitis. Tooth powder was prepared from combination of fourteen herbal plant part in the present work and was screened for anti-microbial activity. Antibacterial activity result shows highest result in 400 mg/ ml concentration for both the bacteria i.e.<em>   E.coli   </em>and   <em>S.   aureus   </em>than   standard    powder    vithoba.    Formulated toothpowder does not cause any harmful effects, instead it imparts good freshness and away from bad odor. Oral hygiene can be maintained in a reliable, safe and inexpensive way by using herbal tooth powder.

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Kishor, N. Shingnapure Amol B. Jaybhaye Abhay V. Pawar Prajakta S. Bhasme*. "HERBAL TOOTH POWDER NATURE SECRET FOR ORAL HEALTH." International Journal in Pharmaceutical Sciences 2, no. 3 (2024): 863–77. https://doi.org/10.5281/zenodo.10860860.

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Herbal tooth powder Nature Secret is a natural alternative to commercial toothpastes and is made from a combination of organic herbs and minerals. This powder is formulated to promote oral health by preventing and combating common oral problems such as plaque, bad breath, and tooth decay. The herbal ingredients in Nature Secret work to strengthen the teeth and gums, reduce inflammation, and improve overall oral hygiene. Some of the key ingredients in this tooth powder include neem, clove and turmeric, which have been used for centuries for their powerful antibacterial, antifungal, and anti-inflammatory properties garlic can effectively clear away infections and restore the teeth and gums to their optimal health. By using herbal tooth powder Nature Secret, individuals can achieve optimal oral health without exposing themselves to harmful chemicals commonly found in commercial toothpaste

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Patel, Yash, Twinkal Patel, Sanjana Patel, Shilpa Patel, and Nikunj Patadiya. "Preparation and evaluation of herbal tooth powder using herbal resources." International Journal of Pharmacognosy and Pharmaceutical Sciences 6, no. 2 (2024): 60–63. https://doi.org/10.33545/27067009.2024.v6.i2a.159.

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Asavari, Bhosale. "Herbal Ice-Cream: Natural Tooth Pain Reliver." International Journal of Pharmaceutical Sciences 2, no. 11 (2024): 1557–62. https://doi.org/10.5281/zenodo.14235921.

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“Herbal ice cream” it contains all natural products and they do not have any side effect to human health, Ice cream could be made more nutritious and health beneficial by adding herbs and other protein rich ingredients. it contains herbal ingredients like clove which have analgesic activity, Cinnamon which have anti-microbial activity, stevia as an herbal sweetening agent which also help to prevent tooth decay and additives like milk (base), custard powder (thickener), whipping cream (stabilizer). This Herbal ice cream helps to reduce inflammation which cause by tooth extraction or any dental operation, this herbal ice cream contains natural sweetener which does not imbalance the sugar lever in diabetic patient and also help to weight management by replacing sugar in diet. Herbal ice cream can improve patient health by removing chemicals from that product, this herbal formulation easily consumes by paediatrics and geriatrics patients.

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PM, Vasanth Kumar, Divya T, Likitha Sree B, Rudvan Khan P, Sarath Babu V, and Apparao CH. "Formulation of Herbal Tooth Powder Employing Quercus infectoria as a Potential Agent for Oral Care and Microbial Infections." South Asian Journal of Experimental Biology 14, no. 2 (2024): 72–77. http://dx.doi.org/10.38150/sajeb.14(2).p72-77.

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Herbal remedies for oral care are increasingly popular due to their safety, affordability, and compatibility with the mouth's natural bacterial balance. This study develops and evaluates herbal tooth powder using Quercus infectoria (oak galls), Triphala (Amla, Haritaki, Bibhitaki), Liquorice (Glycyrrhiza glabra), black salt, and calcium carbonate to prevent oral infections. The objective was to create an effective alternative to conventional dental products. The tooth powder was formulated and tested through physicochemical, rheological, microbiological, patch, and sensory evaluations. The pH level of 5 is ideal for oral applications, balancing effective hygiene and gentleness. Physicochemical evaluations show a moisture content of 1.64% (indicating stability and low microbial risk), an ash value of 0.58% (acceptable limits), and a bulk density of 4g/ml (ensuring good flow and consistent dosing). The effective minimum inhibitory concentration of 0.1 mg/ml highlights the active compounds' potency in inhibiting bacterial growth. Key findings showed it had strong antibacterial, antimicrobial, anti-inflammatory, and antioxidant properties. Tannic acid from Quercus infectoria was effective against oral infections, while Triphala and Liquorice added antibacterial benefits and improved flavour. This study underscores the potential of herbal tooth powders as a natural, effective solution for oral hygiene and infection prevention.

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Akyurt, N., Mehmet Yetmez, U. Karacayli, et al. "A New Natural Biomaterial: Sheep Dentine Derived Hydroxyapatite." Key Engineering Materials 493-494 (October 2011): 281–86. http://dx.doi.org/10.4028/www.scientific.net/kem.493-494.281.

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Hydroxyapatite (HA) is a particularly attractive material for bone and tooth implants since it does not only closely resemble human tooth and bone mineral but it has also biologically proven to be compatible with these tissues. The applications of pure HA are restricted to non load bearing implants due to the poor mechanical properties of HA. Biomaterials of synthetic HA are highly reliable but the synthesis of HA is often complicate and expensive. Bioceramics of naturally derived biological apatites are more economic. Aim of the present work is to introduce sheep teeth dentine HA material as an alternative source of bioactive biomaterials for grafting purposes. The work was started with such a way that extracted sheep teeth were cleaned. The teeth were calcinated at 850°C in air. It was seen that enamel matter was easily separated from dentine after calcination. The collected dentine parts were crushed and ball milled. The powder was pressed between hardened steel dies to produce samples suitable for compression and microhardness tests. The obtained powder compacts were sintered at different temperatures, specifically 1000, 1100, 1200, and 1300°C in air. Results of microhardness and compression strength (along with the statistical analysis of these results) as well as those of SEM and XRD analyses are presented. In the literature, there is very little information about the mechanical properties of dentine and enamel matter derived from sheep, bovine and human. The highest compression strength value in the present study was measured around 146 MPa (from human dentine derived HA the highest value was almost 60 MPa after sintering at 1300°C). The best microhardness in the present study was found as nearly 125 HV. The results of this study showed that the HA material produced from sheep tooth dentine can be qualified as a promising source of HA needed to produce bioactive ceramics.

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Sharma, Kanav, and Khushpreet Singh. "Effect of Fine Glass and Quartzite Powder on Microstructure and Strength Properties of Concrete." IOP Conference Series: Earth and Environmental Science 889, no. 1 (2021): 012016. http://dx.doi.org/10.1088/1755-1315/889/1/012016.

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Abstract Concrete is a vital construction material. It consumes a high number of natural resources like water, sand, and stones. Due to the increase in human population, the demand for new construction is at its peak and increasing day by day. Due to this, we utilize many natural resources. Researchers and scientists are searching for different ways in which they can reduce the amount or find alternates for use of other materials in the manufacture industry. The use of waste materials is one of them. In this, research has been done by using Waste glass powder and Quartzite powder in concrete to find alternates or partial replacements for natural resources in concrete. It was found that the joined effective use of glass powder and quartzite powder in concrete permitted the substitution of up to 15% glass powder and 30% quartzite powder. Various effects of these materials on concrete are discussed like effects on strength Characteristics, and microstructure studies like X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). This study includes research and literature study from various journals paper and then the conclusion was made up.

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Thèses sur le sujet "Natural Resources for tooth powder"

Doherty, Kevin Eric. "Sage-grouse and energy development integrating science with conservation planning to reduce impacts /." [Missoula, Mont.] : The University of Montana, 2008. http://etd.lib.umt.edu/theses/available/etd-03262009-132629/unrestricted/doherty.pdf.

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Silva, Linda Inês Mendes da. "Avaliação in vivo das propriedades branqueadoras e antibacterianas do produto natural Gopal Tooth Powder." Master's thesis, 2018. https://repositorio-aberto.up.pt/handle/10216/113780.

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Silva, Linda Inês Mendes da. "Avaliação in vivo das propriedades branqueadoras e antibacterianas do produto natural Gopal Tooth Powder." Dissertação, 2018. https://repositorio-aberto.up.pt/handle/10216/113780.

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Livres sur le sujet "Natural Resources for tooth powder"

United States. Bureau of Land Management. Powder River Resource Area. and United States. Bureau of Land Management. South Dakota Resource Area., eds. Record of decision, oil and gas amendment: Billings-Powder River-South Dakota resource management plans/environmental impact statements. U.S. Dept. of the Interior, Bureau of Management, Miles City District, 1994.

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Le, P. A. Total petroleum systems and geologic assessment of oil and gas resources in the Powder River basin province, Wyoming and Montana. U.S. Dept. of the Interior, U.S. Geological Survey, 2009.

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United States. Bureau of Land Management. Miles City Field Office., United States. Bureau of Land Management. Billings Field Office., and United States. Bureau of Land Management. Montana State Office., eds. Final supplement to the Montana statewide oil and gas environmental impact statement and proposed amendment of the Powder River and Billings resource management plans. U.S. Dept. of the Interior, Bureau of Land Management, Montana State Office, 2008.

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United States. Dept. of the Interior., United States. Dept. of Agriculture., United States. Dept. of Energy., United States. Bureau of Land Management., United States. Energy Information Administration., and Geological Survey (U.S.), eds. Scientific inventory of onshore Federal lands' oil and gas resources and reserves and the extent and nature of restrictions or impediments to their development: The Paradox/San Juan, Uinta/Piceance, greater Green River, and Powder River Basins and the Montana Thrust Belt. U.S. Dept. of the Interior, Bureau of Land Management, 2003.

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United States. Bureau of Land Management. Scientific inventory of onshore Federal lands' oil and gas resources and reserves and the extent and nature of restrictions or impediments to their development: The Paradox/San Juan, Uinta/Piceance, greater Green River, and Powder River Basins and the Montana Thrust Belt. [U.S. Department of the Interior, Bureau of Land Management], 2003.

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Resources, United States Congress House Committee on Natural Resources Subcommittee on Energy and Mineral. Mining in America: Powder River Basin coal mining, the benefits and challenges : oversight hearing before the Subcommittee on Energy and Mineral Resources of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Thirteenth Congress, first session, Tuesday, July 9, 2013. U.S. Government Printing Office, 2014.

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V, Bazarov B., ред. Problemnye regiony resursnogo tipa: Aziatskai︠a︡ chastʹ Rossii. Izd-vo Sibirskogo otd-nii︠a︡ Rossiĭskoĭ akademii nauk, 2005.

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Chapitres de livres sur le sujet "Natural Resources for tooth powder"

Saloko, Satrijo, Fariza Fariza, I. Wayan Sweca Yasa, and Indriyatno Indriyatno. "The Effect of Temperature and Roasting Time on The Characteristics of Sedau Robusta Coffee Powder (Coffea canephora)." In Proceedings of the 8th International Conference of Food, Agriculture and Natural Resources & the 2nd International Conference of Sustainable Industrial Agriculture (IC-FANRes-IC-SIA 2023). Atlantis Press International BV, 2024. http://dx.doi.org/10.2991/978-94-6463-451-8_16.

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Al-Douri, Y., and Alfarooq O. Basheer. "Production of powder-activated carbon from natural resources." In Nanoparticles in Analytical and Medical Devices. Elsevier, 2021. http://dx.doi.org/10.1016/b978-0-12-821163-2.00014-5.

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Kohli, A. "Next Generation Biodegradable Material for Dental Teeth and Denture base Material: Vegetable Peels as an Alternative Reinforcement in Polymethylmethacrylate (PMMA)." In Materials Research Foundations. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901854-3.

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Today, oral diseases are the most quotidian and conventional issues of the 21st Century. Further investigations about the oral disorders stated that it comprises tooth decay, mouth sores, tooth erosion, tooth sensitivity, gum diseases, toothaches, and dental emergencies are predominant in today’s generation. The further study identified that the improper bonding between the denture base and dental teeth ends up with costly repair along with mouth sores to provide relief from these problems. This effect is not age-restricted and can be observed in any age range but it is prevalent in middle age (35 years) to old age (<80 years) people in the world. Approximately one-third of the world’s population is suffering because of untreated caries of natural teeth (32.7%). The optimal composition of PMMA, organic filler materials, zinc or titanium oxides etc. as denture base, dental tooth, clinical trials with observation, and experimental methodology is yet to be unleashed to reach its optimized state for this considered problem. A call for an alternative material for denture base or the dental tooth is still an unanswered question for a long period. Selection of appropriate reinforcement material encompassing the guidelines for liquid/powder ratio, avoid processes terrible for bond strength, wax-free model. Current work focuses on the investigation of mechanical properties with or without the reinforcement of new and novel biomaterials made of epoxy with carrot peel, epoxy with onion peel, lemon peel, and epoxy with potato peel. Comparative analysis of coupons for with/without the reinforcement (in the form of Short/Continuous fiber) was investigated. The Simulation work correlated with experimental work to explore the possibilities of new material in the arena of dental.

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de Jesús Pellegrini Cervantes, Manuel, Margarita Rodríguez Rodriguez, Susana Paola Arredondo Rea, Ramón Corral Higuera, and Carlos Paulino Barrios Durstewitz. "Recycled Conductive Mortar." In Masonry for Sustainable Construction [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.109000.

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Due to the urgent need to care for the environment, the use of recycled materials is necessary. The creation of multifunctional materials with content of recycled materials presents an alternative to reduce the use of natural resources. This is through the addition of recycled fine aggregate, product of industrial waste in its manufacture, such as graphite powder (GP) and carbon fiber (CF), turning it into conductive recycled mortar (CRM). The sustainability of this new material brings great ecological benefits, such as the reduction in the use of fine aggregates, which are naturally present in rivers, and also, lower production of construction waste sent to landfills. In this research, an evaluation of the effect of the addition of carbon fiber and graphite powder on wet, dry and hardened electrical properties, electrical percolation in dry state, and flowability of the mixture of recycled conductive mortar in a wet state-based on cement―fine aggregate from waste blocks―graphite powder was carried out. The results obtained showed the effect of the addition of GP and CF to the mortar mix, mainly the reduction of its flowability, caused by the physical interaction between the recycled sand or recycled fine aggregate RFA and the carbon fiber CF, as well as the graphite powder GP.

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Oliveira, Marcelo, Bárbara Abreu, and Henrique Costa. "Shredding of Lithium-Ion Batteries: Overview and Industrial Perspective." In Solid Waste Management [Working Title]. IntechOpen, 2024. https://doi.org/10.5772/intechopen.1008229.

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The exponential growth of electrification and digitization is massifying the production and use of lithium-ion batteries, which eventually will reach their end of life. The recycling of these batteries is essential for environmental reasons, but it also shows a strong economic impact. In fact, Li-ion batteries contain critical raw materials in higher concentrations than those found in natural resources. Therefore, lithium-ion battery recycling is an essential and rapidly expanding sector. The recycling process typically involves a shredding step followed by sieving to recover the “black mass”—a powder rich in lithium, cobalt, nickel, and manganese, depending on the battery chemistry. However, shredding an energy storage device containing toxic compounds is challenging, and the most crucial part of the process. Hence, the proposal entails the authoring of a chapter outlining and analyzing various shredding technologies for Li-ion battery recycling, covering the advantages and disadvantages of each from an industrial perspective.

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Ali, Shaista, Aliya Zahid, and Syeda Taskeen Shahid. "Green Engineering of iron and Iron Oxide nanoparticles." In Iron Ores and Iron Oxide [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.1001910.

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Green synthesis has emerged as a promising and eco-friendly approach for the synthesis of nanoparticles, including iron and iron-oxide nanoparticles. This method utilizes plant extracts, microorganisms, or other natural resources as reducing and stabilizing agents, instead of toxic chemicals, to produce nanoparticles with desired properties. One advantage of green synthesis is the ability to control the size, shape, and crystalline structure of the nanoparticles, which can be analyzed using techniques such as powder X-ray diffraction (pXRD). The two variable oxidation states (+2 and +3) provides an opportunity for multiple products with different designing and crystallite structures. Iron and Iron-oxide nanoparticles are both important for biological and photo-chemical activities. The method for green synthesis decides what kind of particles will one get and for what activity it is suitable. The iron nanoparticles are more suitable for biological activities like antibacterial, antimicrobial and anti-cancerous and iron oxide for photoelectrical like band gap studies, conduction and photo-catalysis.

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Balasubramaniyan, Singaravel, Niranjan Thiruchinapalli, and Rutika Umesh Kankrej. "The Application of Biocarbon Polymer Nanocomposites as Filaments in the FDM Process – A Short Review." In Biocarbon Polymer Composites. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815196689123010008.

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Fused Deposition Modeling (FDM) is a solid-based 3D printing process. It is one of the additive manufacturing technologies that is used to create a three dimensional (3D) object using a CAD model. In the FDM process, raw material also known as filament, is initially in the solid state. Nowadays, biocarbon-incorporated polymer-based nanocomposite is used as a filament in the FDM process, due to the enhanced strength of the base polymer. In this paper, a review of carbon extracted from natural waste, such as tea powder, coffee grounds, egg shells, ocean plastic, coconut shells, etc., is presented The extraction procedure of biocarbon is given in detail. The results indicate that the strength enhancement of polymers can be achieved by incorporation of derived carbon from industry as well as agriculture waste. In addition, biocarbon-based polymer nanocomposite filaments in the FDM process can be developed by reinforcing the polymer matrix with carbon nanoparticles. Future work of this review process will explore the biobased carbon from various waste resources. The application of biocarbon-based polymer nanocomposites for the 3D printing process is highlighted.

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Li, Yongxiang, Kuiliang Ji, Xiao Li, Li Lv, and Ren Mu. "Performance Research and Mechanism Analysis of Industrial Solid Waste Geopolymer Stabilized Crushed Stone." In Advances in Transdisciplinary Engineering. IOS Press, 2024. https://doi.org/10.3233/atde241045.

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With the development of industry, the development and utilization of a large number of natural resources in Inner Mongolia, a large number of industrial solid waste storage caused a series of environmental problems. Using industrial solid waste such as Mineral powder, fly ash and wet carbide slag to prepare geopolymer to replace part of cement for pavement base construction, not only solves the problem of large solid waste consumption, but also protects the environment. In this paper, the strength variation law and strength formation mechanism of mixtures with different geopolymer content were studied by mechanical property test, scanning electron microscope (SEM) and mercury intrusion porosimetry (MIP) test. Meanwhile, based on the grey relation theory, the correlation degree between the indexes of harmful pores, harmful pores and total porosity and the mechanical properties indexes was obtained. The results show that the performance of the mixture is also different with the different content of geopolymer. In the case of 20% geopolymer content, the UCS (unconfined compressive strength) and ITS (indirect tensile strength) at the same age are better than those of the mixture without geopolymer, while the mechanical properties of the mixture with 40% geopolymer content are lower than those of the mixture without geopolymer. The grey relation analysis shows that the UCS and ITS of the mixture under different geopolymer content are mainly affected by the rise of harmful holes, while the CRM (compressive resilient modulus) is not affected by the change of pore size, but decreases with the increase of geopolymer content.

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Fares Galal, Alhozaimy A., Al-Negheimish A., and Alawad Omer A. "Assessing the effect of procurement source of scoria rocks on the pozzolanic properties of the cementitious system." In Construction Materials and Structures. IOS Press, 2014. https://doi.org/10.3233/978-1-61499-466-4-247.

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Arabian Peninsula possesses large deposits of scoria rocks (SR) of different grain sizes around pyroclastic volcanic cones along the Arabian shield. SR grains are commonly used as lightweight aggregates in the production of lightweight concrete. Mineral admixtures from local resources are unavailable in the Arabian Peninsula; therefore, searching for local alternatives becomes a necessity. In this study, SR is proposed for the use as natural pozzolan. Three SR samples procured from different sources, defined by GPS international coordinates, were characterized using stereomicroscope and FESEM techniques. SR samples were then ground for a definite time of 120 min. The SR powders obtained were investigated using laser particle size, X-ray diffraction analysis (XRD), X-ray fluorescence (XRF) and field emission scanning electron microscope -energy dispersive X-ray spectroscopy (FESEM-EDS) analyses. The strength activity indices of mortars with water-to-binder (W/B) ratio of 0.5 and a replacement level of 20% ground SR powders at curing ages of 28 and 180 days were determined. The strength activity index was found to depend on SR physico-chemical properties. FESEM analysis has shown how SR particles react in the cementitious system. It is concluded that SR particles react according to the chemical and physical nature of their constituting phases (silicic, aluminic and ferric). The particle size is not the only parameter that controls the pozzolanic activity of SR powders. It is verified that SR grain surface contamination greatly affects the microstructure of the cementitious system. SR samples are found to provide different latent pozzolanic properties. SR3 powder has shown the best potential for use as an alternative supplementary cementitious material in the Arabian Peninsula.

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Hussaini Jagaba, Ahmad, Shamsul Rahman Mohamed Kutty, Gasim Hayder Ahmed Salih, et al. "Palm Oil Clinker as a Waste by-Product: Utilization and Circular Economy Potential." In Elaeis guineensis [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97312.

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Conservation of natural resources to create ecological balance could be significantly improved by substituting them with waste by-products. Palm oil industry operations increases annually, thereby generating huge quantity of waste to be dumped into the landfill. Palm oil clinker (POC) is a solid waste by-product produced in one of the oil palm processing phases. This chapter is designed to highlight the generation, disposal problems, properties and composition of POC. The waste to resource potentials of POC would be greatly discussed in the chapter starting with the application of POC in conventional and geopolymer structural elements such as beams, slabs, columns made of either concrete, mortar or paste for coarse aggregates, sand and cement replacement. Aspects such as performance of POC in wastewater treatment processes, fine aggregate and cement replacement in asphaltic and bituminous mixtures during highway construction, a bio-filler in coatings for steel manufacturing processes and a catalyst during energy generation would also be discussed. Circular economy potentials, risk assessment and leaching behavior during POC utilization would be evaluated. The chapter also discusses the effectiveness of POC in soil stabilization and the effect of POC pretreatment for performance enhancement. Towards an efficient utilization, it is important to carry out technical and economic studies, as well as life cycle assessments, in order to compare all the POC areas of application described in the present review article. POC powder has proven to be pozzolanic with maximum values of 17, 53.7, 0.92, 3.87, 1.46, for CaO, SiO2, SO3, Fe2O3 and Al2O3. Therefore, the present chapter would inspire researchers to find research gaps that will aid the sustainable use of agroindustry wastes. The fundamental knowledge contained in the chapter could also serve as a wake-up call for researchers that will motivate them to explore the high potential of utilizing POC for greater environmental benefits associated with less cost when compared with conventional materials.

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Actes de conférences sur le sujet "Natural Resources for tooth powder"

Saidi, Mohammed, Amine Daoudi, Hamza Mechakra, and Brahim Safi. "ASSESSING THE EFFECTIVENESS OF DUNE SAND AS A SUPPLEMENTARY CEMENTITIOUS MATERIAL TO PRODUCE ADHESIVE MORTARS." In SGEM International Multidisciplinary Scientific GeoConference. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024v/6.2/s25.19.

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In order to valorize our natural resources especially dune sand, the physical and mechanical properties of adhesive mortars based on local mineral additions, have been studied in this present work. The experimental study was carried out on various adhesive mortars made with different contents of dune sand by partial substitution of cement. Adhesive mortars were made from Portland cement (PC; at 35%, 30% and 25%wt), Dune Sand (DS; at 60%, 65% and 75%wt), fillers and redispersible polymer powder (RDP; at 0.6%, 1.0% and 1.4%wt.). The physical (Slump test, normal consistency and bulk density) and mechanical and (initial adhesion, adhesion after immersion in water and adhesion after heat treatment) properties of elaborated adhesive mortars were determined and compared to commercial adhesive mortars.

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Rammer, B., M. Schütze, T. Weber, and R. Bender. "Material Solutions for the Thermal Treatment in High Chlorine Environments." In CORROSION 2008. NACE International, 2008. https://doi.org/10.5006/c2008-08452.

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Abstract Phosphorus is an essential plant nutrient and therefore integral component of many fertilizers. Due to the exploitation of natural resources, a shortage is previsible for the near future and new resources have to be found. Sewage sludge – a virtually infinitely available raw material – offers high contents of phosphates, but is also heavily contaminated by organic and inorganic pollutants. A newly developed process allows the complete removal of those substances, especially the heavy metal content, by the use of highly chlorine-containing atmospheres at temperatures of up to 1000°C. However, there are currently no materials commercially available which can withstand such conditions over longer periods of time. The thermodynamic assessment of different alloying elements revealed that materials with a high content of aluminum and silicon will have the best prerequisites to form and maintain slow-growing, stable oxide layers with the highest potential for being protective against corrosion attack. Since the maximum content of those elements within a technical alloy is restricted, the corrosion resistance of nickel base alloys will be optimized by the application of aluminum- and/or silicon-containing diffusion coatings using the pack cementation process. In this process, the material to be coated is embedded in a powder, consisting of the coating metal, a halogen-distributor (e.g. ammonium chloride) and aluminum oxide as filler material. During an annealing process of several hours at temperatures of 800 to 1000°C, gaseous metal halides form. They diffuse through the powder pack and decompose at the substrate surface, thereby depositing the coating metal. Subsequent solid state diffusion results in the formation of a protective diffusion layer. The performance of the coated materials will be examined in long-time tests under simulated field conditions at high temperatures under chlorine-containing atmospheres. Results from the coating development and their performance under the testing conditions will be reported in the paper.

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Saloko, Satrijo, Dody Handito, and Nurul Nur Aeni. "Encapsulation of Gotu Kola Leaf (Centella asiatica) Flavonoid in Instant Powder Drink Using Maltodextrin." In 5th International Conference on Food, Agriculture and Natural Resources (FANRes 2019). Atlantis Press, 2020. http://dx.doi.org/10.2991/aer.k.200325.032.

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Dobiszewska, Magdalena, and Krzysztof Wrzecion. "The Study of the Properties of Concrete Containing Waste Powder as a Fine Aggregate." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.016.

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Concrete production consumes much energy and large amounts of natural resources. It causes environmental, energy and economic losses. Cement industry contributes to production for about 7% of all CO2 generated in the world. Every ton of cement production releases nearly one ton of CO2 to atmosphere. Thus the concrete and cement industry changes the environment appearance and affects it to a great extent. On the other hand, there is an increase in demand and decrease in natural sources of concrete constituents, like sand. The use of rock dust as the replacement for natural sand will solve the problem of dust disposal. The present study shows the results of the research concerning the modi-fication of concrete with waste dust. It is the waste from the preparation of aggregate used in asphalt mixture production. Concrete modification consists in that the powder waste is added to concrete as partial replacement of fine aggregate. Previous studies have shown that analysed waste has a beneficial effect on compressive strength, flexural strength as well as freeze resistance. The use of mineral powder as the partial substitution of fine aggregate allows for the effective management of industrial waste and improves some properties of concrete.

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QASIM, Ola Adel. "Performance of sustainable mortars containing marble waste as alternative for natural sand." In Civil and Environmental Engineering for Resilient, Smart and Sustainable Solutions. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903414-51.

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Abstract. The construction industry has been responsible for plaguing the environment due to the ecological imbalance caused by the extraction and production of building materials. To make this production of construction materials cleaner, the dependency on natural resources has to be reduced. Moreover, one of the natural resources such as sand is used more than any other natural resources in construction applications. However, the extraction of sand increased over time. However, the availability of sand in the growing demand of the construction industry will be a challenge due to a wide range of variability, cost, and quality problems. On the other hand, marble production plants that are widely used cause marble waste which is large in quantity. There are many environmental problems due to the disposal of marble waste areas that are close to the factories during the production process. This study aims to investigate the use of marble powder as an alternative to natural aggregate (sand) in concrete mixtures. Experimental investigations were conducted to study the influence of marble powder with various replacement ratios (0, 10, 20, 30, 40, 50%) on the hardened mixture properties with (splitting and flexural tensile strength and compressive strength) at 7, 14, and 28 days of curing in the concrete mixture. The result shows that all these properties improved for the substitution of marble waste as fine aggregate in concrete production. The findings found that the maximum increasing percentages in strength in compression and tension (flexural and splitting) at 28 days are (5.4, 7.3, and 5.7%). Results indicated that using up to 20% of marble waste in concrete production as sand replacement resulted in improved strength properties. It was concluded that the proper use of waste marble powder as a partial replacement of sand would have environmental benefits, and simultaneously, increase the feasibility of marble stone industries.

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Lindriati, Triana, Herlina Herlina, and Hari Arbiantara. "Effect of Xanthosoma Sagittifolium Powder, Water and Mixing Time on Texturized Vegetable Protein Properties." In Proceedings of the International Conference on Food, Agriculture and Natural Resources (FANRes 2018). Atlantis Press, 2018. http://dx.doi.org/10.2991/fanres-18.2018.43.

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Mylvaganam, N., and E. Yogarajah. "Enhancing concrete sustainability through carbonated recycled cement powder: a review." In International Symposium on Earth Resources Management & Environment - ISERME 2024. Division of Sustainable Resources Engineering, Hokkaido University, Japan, 2024. https://doi.org/10.31705/iserme.2024.17.

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Concrete is a vital construction material, but the rapid urbanization has led to a significant accumulation of demolished concrete, especially in developing countries. Despite efforts, only a small fraction of this concrete is recycled, leading to environmental challenges. However, countries like Japan have successfully recycled a large portion of their demolished concrete, primarily for use in road subbase and as Recycled concrete aggregate (RCA) which is typically yields lower quality compared to natural aggregate (NA). Additionally, during RCA production, a significant amount of cement powder is generated, which has the potential to be used as a supplementary cementitious material (SCM). Recent research has explored various valorisation methods for recycled cement powder (RCP), with carbonation emerging as the most sustainable option. Carbonated RCP not only stores CO2 but also improves concrete properties such as compressive strength and durability. Considering the environmental impact of traditional cement manufacturing, the utilization of SCMs, such as carbonated recycled cement powder (cRCP), has emerged as a promising strategy. This approach promotes sustainable recycling practices and contributes to ecological conservation efforts, aligning with the circular economy philosophy. This review highlights recent findings on the accelerated carbonation treatment of RCP, exploring its benefits and applications as a sustainable building material

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Soetedjo, Prijo. "Use of Active Powder To Improve Carrying Capacity Vertisol and Alfisol on Dry Land Farming System." In Proceedings of the International Conference on Food, Agriculture and Natural Resources (FANRes 2018). Atlantis Press, 2018. http://dx.doi.org/10.2991/fanres-18.2018.28.

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Thoman, Robert W., and Sue L. Niezgoda. "Estimating the Erodibility of Ephemeral, Cohesive Streams that Receive Coal Bed Natural Gas Product Water in the Powder River Basin of Wyoming." In World Environmental and Water Resources Congress 2007. American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40927(243)383.

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Corbo, Mark A., and Stanley B. Malanoski. "A Comprehensive Torsional Vibration Analysis Procedure: Part I." In ASME 1997 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/detc97/vib-4048.

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Abstract One of the foremost concerns facing turbomachinery users today is that of torsional vibration. In contrast to lateral vibration problems, torsional failures are especially heinous since the first symptom of a problem is often a broken shaft, gear tooth, or coupling. The difficulty of detecting incipient failures in the field makes the performance of a thorough torsional vibration analysis an essential component of the turbomachinery design process. The aim of this paper1 is to provide users with a practical design procedure that can be used to ensure that their systems will not encounter major difficulties in the field. It has been the authors’ experience that most turbomachinery users encounter little difficulty in determining their machine’s natural frequencies due to the large number of resources available in that area. However, problems often arise when they must translate this information into an accurate prediction of whether or not their design will experience torsional vibration problems. Accordingly, this two-part paper concentrates on the steps that should be taken once the natural frequencies have been found.

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