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Journal articles on the topic 'Fine clay and Hand lay-up'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Bam, S. Aondover, G. Bem Nyior, and E. Sesugh Tile. "Evaluation of Mechanical Properties of Raffia Palm Fibre-Groundnut Shell Powder/Fine Clay Filler Reinforced Epoxy Composite for Partition Wall Applications." International Journal of Mechanical and Industrial Technology 13, no. 1 (2025): 10–18. https://doi.org/10.5281/zenodo.15394563.

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<strong>Abstract:</strong> High-rise buildings minimize the use of high-density construction materials to reduce the weight of the building. One of construction parts that can be employed to reduce weight in buildings is a partition wall. Partition walls compartmentalize the building and define the spaces within it and are traditionally made of concrete masonry. Because of the high weight of concrete, there is need for a sustainable light weight alternative material.  In this work, raffia palm fibre-groundnut shell powder/fine clay filler reinforced epoxy composite has been developed for

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de Almeida Prado, Ana Candida, Simone Pereira Taguchi, Mirna Aparecida Neves, Raphael Henrique Soares, and Arthur Bazoni da Fonseca. "Use of Fine Wastes from Dimension Stone Industry in the Manufacture of Ceramic Tile." Materials Science Forum 727-728 (August 2012): 703–9. http://dx.doi.org/10.4028/www.scientific.net/msf.727-728.703.

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Large quantities of rock dust are daily discarded by dimension stone industries. These wastes can be reduced if they are selected according to their composition and used as base in other products. Two kinds of wastes (BS and OI) were mixed at different proportions with kaolinitic clay traditionally used as raw material in ceramic industry. BS has high contents of plagioclase, quartz, microcline and low biotitic; and OI has high quantities of microcline and plagioclase, besides quartz, biotitic, enstatite and edenite. At the same firing temperature, water absorption of samples with 50% BS, or l

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Viana, Caroline Espinosa, Dylmar Penteado Dias, José Nilson França de Holanda, and Ronaldo Pinheiro da Rocha Paranhos. "The use of submerged-arc welding flux slag as raw material for the fabrication of multiple-use mortars and bricks." Soldagem & Inspeção 14, no. 3 (2009): 257–62. http://dx.doi.org/10.1590/s0104-92242009000300009.

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This work has as objective to analyze the recycling possible uses of the slag of welding flux (SWF) in the civil construction. It was searched the liability of SWF as substitute of sand in the production of multiple-use mortars and clay for the production of ceramic bricks. SWF has origin in the submerged-arc welding (SAW), and have been used slags of the acid, neutral and basic types, according to its neutrality. Mortars have been made containing the three types of SWF and in addition a reference mortar made with sand. Physical and mineralogical characteristics of each SWF were studied, and t

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Afzal, Khan, and Kushwah Nitesh. "Study of Bricks Made Up of Different Materials in Building Construction by eTabs Software." International Journal of Trend in Scientific Research and Development 4, no. 2 (2020): 323–35. https://doi.org/10.5281/zenodo.3843192.

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No construction work is possible without bricks because of bricks are used in buildings as well as in pavement. Since many centuries brick making has been practiced by human beings, presently bricks are easily made by the use of the machine but in old day's bricks are manufactured by own hand using wooden or steel moulds. For any types of buildings, amajor part of the construction cost is just belongs to bricks work. Bricks walls are not a load bearing elements but they column. Due to high dead weight, the size of the load bearing element needs to be increased which increase the cost of pr

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Watanabe, Takahiro, Tetsuya Matsunaka, Toshio Nakamura, et al. "A New 14C Data Set of the PY608W-PC Sediment Core from Lake Pumoyum Co (Southeastern Tibetan Plateau) Over the Last 19 kyr." Radiocarbon 52, no. 3 (2010): 1435–42. http://dx.doi.org/10.1017/s0033822200046518.

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A new continuous sediment core (PY608W-PC; 3.8 m length) for reconstruction of climatic and environmental changes in the southeastern Tibetan Plateau was taken from the eastern part of Lake Pumoyum Co in August 2006. Sediment layers of the lower part of PY608W-PC (380–300 cm depth) were composed mainly of relatively large plant residues (up to ∼3 cm in length) with an admixture of fine sand and sandy silt. The large plant residues disappeared at ∼300–290 cm depth in core PY608W-PC and were replaced by silt-silty clay. The large plant residues from the lower part of PY608W-PC could be aquatic,

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Rosli, Najmiah, Rosli Saad, Nazrin Rahman, and Nur Azwin Ismail. "Soft soils: A study on their electrical resistivity values and geotechnical properties (porosity, SPT and particle size distribution)." Warta Geologi 46, no. 3 (2020): 186–90. http://dx.doi.org/10.7186/wg463202002.

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Soft soils pose abundant engineering issues due to its low bearing capacity and shear strength. Comprehensive study on soft soil’s physical properties such as shear strength and ability to store water (porosity) could help in devising the optimum ground improvements and foundations techniques. Therefore, physical properties of soft marine clay in Nibong Tebal were thoroughly studied using 2-Dimensional Resistivity Imaging (2-DRI) method in conjunction with porosity measurements, standard penetration test values (SPT-n) and particle size distribution (PSD) analysis. The 2-DRI profile depicts th

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Parthasarathy, Arpitha. "The Spiritual Form of Ancient Art and Culture - Bharatanatyam (Visual Art) Depicted Using Unique Techniques on Scratchboard (Fine Art) Medium." Journal of Arts and Humanities 6, no. 3 (2017): 33. http://dx.doi.org/10.18533/journal.v6i3.1143.

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<p>The most ancient form of dance that is prevailing todays is a form of classical Indian dance, Bharatanatyam. In Sanskrit (and Devanagri), bharatanatyam means "Indian dance", is believed to have divine origin and is of the most ancient form of classical dance. Bharatanatyam is a two thousand-year-old dance form, originally practiced in the temples of ancient India. The art today remains purely devotional even today and this performing art is yet to gain awareness and interest in the western world. This dance form has various implications in improving the higher order thinking in childr

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Quesada, Carlos Alberto, Claudia Paz, Erick Oblitas Mendoza, Oliver Lawrence Phillips, Gustavo Saiz, and Jon Lloyd. "Variations in soil chemical and physical properties explain basin-wide Amazon forest soil carbon concentrations." SOIL 6, no. 1 (2020): 53–88. http://dx.doi.org/10.5194/soil-6-53-2020.

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Abstract. We investigate the edaphic, mineralogical and climatic controls of soil organic carbon (SOC) concentration utilising data from 147 primary forest soils (0–30 cm depth) sampled in eight different countries across the Amazon Basin. Sampled across 14 different World Reference Base soil groups, our data suggest that stabilisation mechanism varies with pedogenetic level. Specifically, although SOC concentrations in Ferralsols and Acrisols were best explained by simple variations in clay content – this presumably being due to their relatively uniform kaolinitic mineralogy – this was not th

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Carvalho, Aliane, Marcondes Costa, and Henrique Almeida. "CARACTERIZAÇÃO QUÍMICA E MINERALÓGICA DOS SUSPENSATOS DOS RIOS PURUS E JURUÁ NO ESTADO DO ACRE." Boletim do Museu de Geociências da Amazônia 11, no. 3 (2024): 1–60. http://dx.doi.org/10.31419/issn.2594-942x.v112024i3a8atc.

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The state of Acre, located in the southwest of the Brazilian Amazon, is drained by two large river basins, the Purus and Juruá rivers, which have their sources on the sub-Andean slopes of Peru and cross the state in a path almost parallel to each other and a southwest-northeast direction. They are meandering rivers, with a large amount of suspended sediment (suspended solids or load materials), which gives them their white or muddy color, in addition to transporting a lot of silty-sandy sediments by traction, forming significant beach bodies (pointed bars). The geological terrains drained by t

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Belogub, Elena V., Vladimir V. Shilovskikh, Konstantin A. Novoselov, Ivan A. Blinov, and Ksenia A. Filippova. "Authigenic rhabdophane from brown iron ore of the oxidation zone of the Babaryk massive sulfide occurrence (South Urals): scanning electron microscope (SEM) and electron backscattered diffraction (EBSD) study." European Journal of Mineralogy 33, no. 5 (2021): 605–20. http://dx.doi.org/10.5194/ejm-33-605-2021.

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Abstract. Rhabdophane (Ce0.34−0.43Nd0.13−0.14Ca0.06−0.29La0.08−0.11Y0.05−0.12Pr0.03−0.05Sm0.02−0.05Gd0.02−0.05Fe0−0.04Dy0.00-0.01)0.97-1.01((P0.69−0.96S0.04−0.31)1.00O4)⚫H2O is found in a Fe3+-oxyhydroxide nodule (brown iron ore) collected from the upper part of the oxidation profile of the Babaryk massive sulfide occurrence (South Urals, Russia) at a 1.6 m depth. The structural and microtextural features of rhabdophane are revealed by electron backscattered diffraction (EBSD); the chemical composition and distribution of the main components are determined on a scanning electron microscope (SE

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Baioumy, H. M., and M. S. Hassan. "Authigenic halloysite from El-Gideda iron ore, Bahria Oasis, Egypt: characterization and origin." Clay Minerals 39, no. 2 (2004): 207–17. http://dx.doi.org/10.1180/0009855043920131.

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AbstractHalloysite in El-Gideda iron mine occurs as very soft, light and white-to-pinkish white pockets and lenses ranging in diameter from 50 cm to 1 m within the iron ore. Highly hydrated halloysite is the main constituent of these pockets beside some kaolinite and alunite. The diffraction pattern of the clay fraction (<2 mm) shows a rather broad and diffuse 001 reflection spread between 10.3 and 13.6°2θ. Upon treatment, the 001 reflection of halloysite expands up to 10.94 Å and 11.9 Å corresponding to ethylene glycol and dimethyl formamide treatment, respectively. After these treatments,

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Patel, Kundan, Jay Patel, Piyush Gohil, and Vijaykumar Chaudhary. "Effect of Nano Clay on Mechanical Behavior of Bamboo Fiber Reinforced Polyester Composites." Applied Mechanics and Materials 877 (February 2018): 294–98. http://dx.doi.org/10.4028/www.scientific.net/amm.877.294.

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Composite materials play a vital role in many industrial applications. Researchers are working on fabrication of new composite materials worldwide to enhance the applicability of these materials. The present study aimed to investigate the effect of Nano clay loading as filler on the mechanical properties of the bamboo fiber yarn reinforced polyester composite. Five different types of composite specimen were prepared with Nano clay loadings of 0 to 4 % weight fraction using hand lay-up technique. It was observed that the composite sheet with 1 wt % nano clay content exhibited the optimized tens

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Dave, Pragnesh N., and Nikul N. Patel. "Synthesis and properties of epoxy resin-based acrylated poly (ester-amide)s/silane tailored organo-montmorillonite nanocomposites." High Performance Polymers 24, no. 8 (2012): 793–98. http://dx.doi.org/10.1177/0954008312453354.

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Epoxy resin-based unsaturated poly(ester-amide) (UPEA) resins can be prepared by many methods, but in this study, these resins were prepared by the reported method and further acrylation was carried out using acryloyl chloride. Organo-montmorillonite was treated with 3-amino-propyltrimethoxysilane. Nanocomposites composed of UPEA matrix and organically modified clay filler were prepared by hand lay-up. The flexural property of the nanocomposites were determined, and it was found that adding only 3% w/w organically modified clay improved the flexural modulus of UPEA by 35%. Nanocomposites were

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Barbosa, Renata, Tatianny Soares Alves, Celso Hartmann Júnior, and Gabriel Neiva Cadah. "Evaluation of Attapulgite Clay Content from Piauí in Sorption Characterization of Water in the Polyester Matrix Composites." Materials Science Forum 775-776 (January 2014): 471–75. http://dx.doi.org/10.4028/www.scientific.net/msf.775-776.471.

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The physico-chemical characteristics of attapulgite clay confer appropriate properties to their different industrial uses, such as: Drilling fluid, bleaching of vegetable oils, mineral and animal grease and oil absorbents, pet waste absorbents (pet litter), purification of drinking water etc. The aim of this study was the chemical modification of attapulgite originally from state of Piauí, for applications in polyester-based composites. The unmodified and modified clay were characterized by X-ray diffraction (XRD). In order to evaluate the interaction of clays with organic solvents, the test

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Ujianto, Onny, Dean Margetts, Heru Santoso, and Roni Sujarwadi. "Glass Fiber Reinforced Unsaturated Polyester: Effect of Nanoclay and Mixing Time on Tensile Modulus, Flammability, and Wear Resistance." Solid State Phenomena 266 (October 2017): 110–14. http://dx.doi.org/10.4028/www.scientific.net/ssp.266.110.

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Glass fiber reinforced unsaturated polyesters were prepared by hand lay-up technique. Effect of clay conditions and loading, as well as mixing time on tensile modulus, flammability, and wear resistance were evaluated. In general, the results showed that there might be two possible structures, dispersed and agglomerated, in the composite samples. The modulus results showed that the effect of clay drying, as well as higher filler loading increase the property. In contrast, the mixing time resulted in negative effect on modulus. The improvement on modulus and flammability might be influenced by c

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Velmurugan, Ramachandran, G. Balaganesan, and N. K. Gupta. "Impact Loading on Glass/Epoxy Composite Laminates with Nano Clay." Key Engineering Materials 535-536 (January 2013): 72–75. http://dx.doi.org/10.4028/www.scientific.net/kem.535-536.72.

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This paper presents various energy absorbing modes in nano composite laminates when subjected to impact loading. Composite laminates, made of 610 gsm WRM(Woven Roving Mat), are prepared by hand lay-up and compression molding technique.Nano clay is dispersed in epoxy and is used as a matrix. Clay dispersion in epoxy is varied from 1% to 5% by weight. A gas gun set up is used to impact the composite laminates with spherical nose cylindrical projectile of diameter 9.5 mm and mass 7.6g.The laminates are subjected to different velocities, which vary from below ballistic limit to above ballistic lim

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Raghava, Krishna Sameer B., M. Ashok Kumar, V. Nikill Murthy, and N. Karthikeyan. "Development of Sansevieria trifasciata - Carbon Fiber Reinforced Polymer Hybrid Nanocomposites." International Letters of Chemistry, Physics and Astronomy 50 (May 2015): 179–87. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.50.179.

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This paper presents studies on experimental values of tensile strength properties of hybrid nanocomposites were studied and compared with theoretical values. It was observed that, experimental strengths were fallen shorter than the theoretical values. Nanocomposites were fabricated by filling MMT nanoclay by weight ratio and reinforced with short sansevieria trifasciata (STF) and short carbon fibre (CF) by randomly orientation. Organically modified montmorillonite clay filled with different proportions viz.0, 1, 3 and 5 wt.% dispersed into the vinyester matrix modified system by hand lay-up te

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Raghava, Krishna Sameer B., M. Ashok Kumar, V. Nikill Murthy, and N. Karthikeyan. "Development of <i>Sansevieria trifasciata</i> - Carbon Fiber Reinforced Polymer Hybrid Nanocomposites." International Letters of Chemistry, Physics and Astronomy 50 (May 3, 2015): 179–87. http://dx.doi.org/10.56431/p-9tp6e7.

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This paper presents studies on experimental values of tensile strength properties of hybrid nanocomposites were studied and compared with theoretical values. It was observed that, experimental strengths were fallen shorter than the theoretical values. Nanocomposites were fabricated by filling MMT nanoclay by weight ratio and reinforced with short sansevieria trifasciata (STF) and short carbon fibre (CF) by randomly orientation. Organically modified montmorillonite clay filled with different proportions viz.0, 1, 3 and 5 wt.% dispersed into the vinyester matrix modified system by hand lay-up te

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Haris, Mohd Yusoff, D. Laila, Amzari Zhahir, Faizal Mustapha, and K. D. Mohd Aris. "A Comparative Study of an Aircraft Radome Closed Mold through Vacuum Infusion Technique." Advanced Materials Research 576 (October 2012): 690–94. http://dx.doi.org/10.4028/www.scientific.net/amr.576.690.

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In this paper, manufacturing process of aircraft radome via closed mold with vacuum infusion process is presented. Closed mold is needed to get smooth inner and outer surface. The radome mold was formed from the original part of the aircraft Duke 60 Beachcraft. The closed mold is made from fiber glass/polyester composite via hand lay-up technique. Tooling grade vinyl ester gel coat is applied on the mold to produce fine smooth surface and protection. Later, the radome part is fabricated with vacuum infusion and the consistency of thickness is achieved.

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Daramola, O. O. "MECHANICAL PROPERTIES AND WEAR BEHAVIOUR OF KAOLINITE CLAY PARTICLES REINFORCED EPOXY MATRIX COMPOSITES." FUTA JOURNAL OF ENGINEERING AND ENGINEERING TECHNOLOGY 15, no. 2 (2021): 205–17. http://dx.doi.org/10.51459/futajeet.2021.15.2.317.

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Epoxy matrix composites reinforced with clay particles were developed by hand lay-up open mould casting technique. The clay used in this study was pulverized and processed into ultrafine particles through the sedimentation process. The composites were developed by blending the epoxy matrix and hardener with various weight fractions of the ultrafine clay particles (2, 4, 6, 8 and 10 wt%) in open test moulds. In order to accomplish a homogeneous blend of the constituents; manual mixing of the blend was carried out for 3 min. The test specimens were left to cure for 24 hours in the moulds and for

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Kong, Zhen Xing, and Ji Hui Wang. "Interlaminar Shear Strength of Glass Fiber Reinforced Dially Phthalate Laminates Enhanced with Nanoclays." Advanced Materials Research 79-82 (August 2009): 1779–82. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.1779.

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To examine the role of nanoclays in the enhancement of interlaminar shear strength (ILSS) of glass fiber reinforced diallyl phthalate (GFR-DAP) composites, the GFR-DAP laminates were manufactured by hand lay-up techniques using two nanoclays, DK2 and MHAB-MMT, respectively. Χ-ray diffraction (XRD) were conducted to characterize the morphology of the dispersed clay particles in the DAP matrix. The mechanical performances were characterized by flexural strength and LISS measurements. XRD scans shows that the clays disperse uniformly in the DAP matrix and form an intercalated structure with a bas

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Sivasaravanan, S., V. K. Bupesh Raja, S. Prabhu, S. Dineshkumar, and Gokulaprasad. "Investigation of Mechanical Properties of Nano Sized Clay/LDH Particle as Hybrid Nano Composite Material." Applied Mechanics and Materials 766-767 (June 2015): 355–61. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.355.

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Usage of Hybrid nanocomposite materials provides a greater opportunity to replace the conventional materials due to their properties such as light weight and high strength to based on weight ratio. In this synergitic study, nanosized clay particle and layered double hydroxide particles are used. nanoclay and LDH particles were mixed on the bases of weight percentage (1wt% to 5wt%) by ultra sonication technique. The composite material was fabricated by one of the most common method known as hand lay-up technique. The composite materials was prepared in the form of plate with 4mm of thickness.Th

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Salih, Rana M. "Study of heat and sound insulation for polymeric composites reinforced with nano clay." Polymers and Polymer Composites 29, no. 9_suppl (2021): S1216—S1226. http://dx.doi.org/10.1177/09673911211051164.

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Composite materials were prepared using epoxy as a matrix and nanoclay as a reinforcement with weight fractions 5% and 10%, using hand lay-up as a preparation technique. An unreinforced epoxy cast was also prepared for comparison. Heat and acoustic insulation were studied, in addition to tensile, compression, and impact tests. The results showed that the sound levels were the highest in the unreinforced specimen, and decreased gradually with nanoclay, suggesting that the nanoclay have impeded the path for sound waves transmission. The same behavior was observed with thermal conductivity. The t

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Kadhim Oleiwi, Jawad, Emad Saadi Al- hassani, and Alaa Abd Mohammed. "Tensile and Buckling Analysis of Polymeric Composite Columns." Basrah journal for engineering science 14, no. 2 (2014): 176–88. http://dx.doi.org/10.33971/bjes.14.2.19.

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This research studied the critical load of composite columns theoretical and numerical by using ANSYS14 package depended on experimental tensile properties of composite specimens. The composite specimens were prepared by hand lay-up technique made from unsaturated polyester reinforced with glass fibers with different fiber volume fraction Vf, aspect ratio (L/T), and angle of fibers for coarse and fine woven fibers. The critical load that obtained by using program (ANSYS 14) have also shown a good agreement with results that were obtained theoretically and the maximum difference was (0.7%). The

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Abu Hashim, Mohammad Firdaus, Mohd Mustafa Al Bakri Abdullah, Che Mohd Ruzaidi Ghazali, Kamarudin Hussin, Muhammad Faheem Mohd Tahir, and Mohammed Binhussain. "Characterization of Geopolymer Composite via Filament Winding." Applied Mechanics and Materials 754-755 (April 2015): 59–65. http://dx.doi.org/10.4028/www.scientific.net/amm.754-755.59.

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Generally, the composite pipes are fabricated using glass fiber and polyester resin matrix by hand lay-up and also by 2-axis filament winding machine. In this work, a filament winding machine was used for the fabrication of geopolymer composites pipes. In this study, raw material based geopolymer resin composites reinforced by continuous glass fiber were used for fabrication and synthesized by different types of raw materials which is fly ash, silica sand, white clay, kaolin and pozzolanic. The effects of different types of raw materials on the product were investigated. The morphological prop

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Firuz, Z., Ahmad Sahrim, Rozaidi Rasid, and S. A. Syed Nuzul Fadzli. "Flexural Analysis of Polyurethane Foam and Sandwich Composite Foam via Experimental and Finite Element CMethods." Advanced Materials Research 795 (September 2013): 526–29. http://dx.doi.org/10.4028/www.scientific.net/amr.795.526.

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Polyurethane (PU)/montmorillonite (MMT) composite foam were synthesized with reaction of diisocyanate with polyester polyol by a batch process. In this research, water was used as the blowing agent with TEGOSTAB B8407 and TEGOAMIN PMDETA as the surfactant and catalyst, respectively. Clay was used as filler for composite PU foam with the percentages varied from 0 wt% to 5 wt%. Polyurethane foam (Al-PU) sandwich composite was prepared using hand-lay up method where Al sheet was stacked onto PU foam using adhesive. The samples were characterized using flexural test analysis. Observations showed t

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Lund, Jørgen. "Forlev Nymølle – En offerplads fra yngre førromersk jernalder." Kuml 51, no. 51 (2002): 143–95. http://dx.doi.org/10.7146/kuml.v51i51.102996.

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Forlev NymølleA sacrificial site from the late Pre-Roman Iron AgeForlev Nymølle is situated in a small stretch of boggy land in the northern part of the river valley of Illerup Å north of Skanderborg. During peat digging in 1947, eight small clay vessels from c. 400 AD and a few fashioned wooden items were found. However, it was not until 1960 that museum keeper Harald Andersen, Moesgard Museum, started a major and very careful excavation, which last ed until 1966. Twenry-four areas, making up 325 m2, were excavated along the southern edge of the present peat bog (fig. 1). Forlev Nymølle is st

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Swasono, Yogi Angga. "The Effect of Carbon Black on Electrical, Thermal-Oxidative Stability, and Structural Properties of Polypropylene/Clay Nanocomposite." Key Engineering Materials 831 (February 2020): 151–55. http://dx.doi.org/10.4028/www.scientific.net/kem.831.151.

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An effort to improve electrical property of Polypropylene (PP)/Clay nanocomposite was conducted. Carbon black (CB) was introduced into PP/Clay to enhance that property as required for conductive polymer composites (CPCs) application. The compositions of CB on PP/Clay were varied at 3, 5, and 7 percent hundred resin (phr). In this research, all composites were prepared by melt mixing using an internal mixer at 222 °C, 83 rpm, and 10 minutes. A compatibilizer, PP-grafted-Maleic Anhydride (PP-g-MA), was used to facilitate dispersion of clay layers and CB particles on PP matrix. The electrical pro

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Barbalho, Gustavo H. A., José J. S. Nascimento, Lucineide B. Silva, et al. "Moisture Absorption and Its Effects on the Mechanical Properties of Biopolymers Reinforced by Curauá Fiber and Montmorillonite Clay: A Transient Experimental Evaluation." Journal of Composites Science 9, no. 5 (2025): 248. https://doi.org/10.3390/jcs9050248.

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Biocomposites are defined as eco-friendly materials from an environmental point of view. Because of the importance of this class of materials, their study is important, especially in moist and heated conditions. In this sense, this work aims to evaluate the transient behavior of moisture absorption and mechanical performance of biocomposites composed of a matrix of high-density biopolyethylene (originated from ethanol produced from sugarcane) filled with curauá vegetable fiber and organophilic montmorillonite clay. For this purpose, dry biocomposites filled with organophilic montmorillonite cl

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ATHIJAYAMANI, Athijayamani, Prabhu MUTHUSAMY, and Sidhardhan SUSAIYAPPAN. "Effects of Addition of Glass Fibers and SiC Particles on the Mechanical and Machinability Behaviours of Areca Fine Fiber-Reinforced Phenol Formaldehyde Composite." Mechanics 28, no. 4 (2022): 323–28. http://dx.doi.org/10.5755/j02.mech.25443.

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In the present experimental study the effects of addition of Glass Fibers (GFs) and Silicon Carbide (SiC) particles on the mechanical and machinability behaviors of Areca Fine Fiber (AFF)-reinforced Phenol Formaldehyde (PF) composites were evaluated in three stages. Composites were prepared by hand lay-up technique at room temperature. From the first stage, it is observed that the 20AFF/20GF/PF hybrid composites give better mechanical properties than the other hybrid composites followed by the 10AFF/30GF/PF hybrid composite. The results of second stage revealed that the AFF/GF/SiC/PF hybrid co

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Meziani, Faroudia, Kahil Amar, and YAMOUN Mourad. "Effect of the Addition of Aggregates Derived from Used Tires on the Mechanical Behavior of Clay." Advanced Engineering Forum 47 (August 31, 2022): 57–67. http://dx.doi.org/10.4028/p-cazy62.

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The study of the shear strength parameters of mixtures comprising tire-derived aggregates (TDA) and clay was the main objective of this experimental work. The tests were performed using the direct shear box. First, the test was performed on specimens comprising only clay in its natural state and then on mixtures consisting of clay and TDA in increasing contents. A total of four samples (natural clay and natural clay with 2, 4, and 6% tire-derived aggregates)) were made and tested at three normal stress levels (100, 200, and 300 kPa). Then, Mohr-Coulomb failure envelopes were drawn to determine

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Shanti Kiran, Z., V. Suresh Babu, and K. V. L. Soma Shekar. "Study of the microhardness and erosive wear behavior of organo-modified nanoclay filled glass-epoxy composites and optimization." Journal of Mechanical Engineering and Sciences 13, no. 2 (2019): 4794–815. http://dx.doi.org/10.15282/jmes.13.2.2019.03.0400.

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This research concentrates on examination and optimization of microhardness and erosion resistance of epoxy-glass-nanoclay composites (EGCN’s). The parameters considered were the weight content of Cloisite 15A (A), the volume of glass fiber (B), and the direction of glass fibers (C). Hand lay-up technique was used to make the composites and tested for microhardness and erosive wear as per ASTM standards. The L9 orthogonal array was utilized to design the microhardness tests and erosive wear test, and it was noted that the composite with high clay content, low fiber volume, and 45° orientation

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., Deenadayalan, S. Sivakuma, R. Vishnuvardhan, and R. Sathish Kumar. "Fabrication and characterisation of B-H-G fiber with teak wood particles reinforced hybrid composite." International Journal of Engineering & Technology 7, no. 2.31 (2018): 208. http://dx.doi.org/10.14419/ijet.v7i2.31.13442.

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In recent years, natural fiber based hybrid composite materials have replaced many conventional metals and synthetic resin composites in many applications. The natural fibers serve better in the present unsustainable environment due to their properties. The waste wood particles from saw mill can also be added as reinforcement element in the matrix. Hence, to enhance the strength of the composite, fine teak wooden particles are mixed with the composite matrix material. The aim of this work is to develop hybrid fiber reinforced composite with waste teak wooden particles with optimum properties.

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Peterson, Eugene H. "Annie Dillard: With Her Eyes Open." Theology Today 43, no. 2 (1986): 178–91. http://dx.doi.org/10.1177/004057368604300204.

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“Annie Dillard prays with her eyes open. She says, Spread out your hands, lift up your head, open your eyes, and we'll pray… She gets us into the theater that Calvin told us about, and we find ourselves in the solid biblical companionship of psalmists and prophets who watched the ‘hills skip like lambs’ and heard the ‘trees clap their hands,’ alert to God everywhere.”

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Sapiai, Napisah, Aidah Jumahat, Mohammad Jawaid, Md Zin Abu, and Mochamad Chalid. "Mechanical Performance of Granite Fine Fly Dust-Filled Basalt/Glass Polyurethane Polymer Hybrid Composites." Polymers 13, no. 18 (2021): 3032. http://dx.doi.org/10.3390/polym13183032.

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The granite processing industry generates large amounts of bottom granite dust waste every day. After the drying and heating process of concrete mixture production, the granite dust is blown and collected in the filtering nozzle. This very fine particle granite dry fly dust, with a particle size maximum distribution of 500 μm, can easily be blown away by wind and cause serious environmental impacts. The use of this waste material would be an effective way to reduce such impacts. Therefore, this paper presents an experimental study on the potential of granite dust as a filler in enhancing the m

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Ahmad et al., Shanaz. "Acoustic and Thermal Insulation of Nanocomposites for Building Material." Baghdad Science Journal 17, no. 2 (2020): 0494. http://dx.doi.org/10.21123/bsj.2020.17.2.0494.

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This work aims to enhance acoustic and thermal insulation properties for polymeric composite by adding nanoclay and rock wool as reinforcement materials with different rations. A polymer blend of (epoxy+ polyester) as matrix materials was used. The Hand lay-up technique was used to manufacture the castings. Epoxy and polyester were mixed at different weight ratios involving (50:50, 60:40, 70:30, 80:20, and 90:10) wt. % of (epoxy: polyester) wt. % respectively. Impact tests for optimum sample (OMR), caustic and thermal insulation tests were performed. Nano clay (Kaolinite) with ratios ( 5 and 7

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Sri Ram Karthik, P., and K. Shyam Chamberlain. "Strengthening of Subgrade Clayey Soil in Road Construction using Fly ash and Coir Geotextile." IOP Conference Series: Materials Science and Engineering 1197, no. 1 (2021): 012042. http://dx.doi.org/10.1088/1757-899x/1197/1/012042.

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Abstract The best handicap for a carried-out community of road structures in growing international locations like India is the restricted monetary assets accessible to construct roads the use of traditional methods. By the usage of nearby substances inclusive of neighbourhood grounds for the constructions of the lower layers of the pavements (in precise the subgrade), the development expenses can be extensively reduced. 20% of the land in India is clayey and is expansive in nature. These lands are observed to be steeply-priced to construct and to maintain roads. The use of coir fibre substance

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Diva Threcia Purba, Eben Haezarni Telaumbanua, and Aprinaldi P Simarangkir. "Teknik Olah Vokal Dengan Kemampuan Bernyanyi Pada Paduan Suara SMA Swasta PGRI 20 Siborongborong Tapanuli Utara." Jurnal Teologi Injili dan Pendidikan Agama 2, no. 3 (2024): 94–115. https://doi.org/10.55606/jutipa.v2i3.314.

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The aim of this research is to find out good and correct vocal techniques for body posture, breathing, articulation, phrasering when singing in a choir. In this research, researchers used qualitative research methods using observation, interviews and documentation. This research was carried out by collecting information through field research to obtain results which were processed into accurate data. The research process carried out as data collection is: photos, videos and interviews. The results of this research show that the process of implementing vocal technique training in singing the so

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Stanila, Anca-Luiza, Catalin Cristian Simota, and Mihail Dumitru. "Contributions to the Knowledge of Sandy Soils from Oltenia Plain." Revista de Chimie 71, no. 1 (2020): 192–200. http://dx.doi.org/10.37358/rc.20.1.7831.

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Highlighting the sandy soil of Oltenia Plain calls for a better knowledge of their variability their correlation with major natural factors from each physical geography. Pedogenetic processes specific sandy soils are strongly influenced by nature parent material. This leads, on the one hand, climate aridity of the soil due to strong heating and accumulation of small water reserves, consequences emphasizing the moisture deficit in the development of the vegetation and favoring weak deflation, and on the other hand, an increase in mineralization organic matter. Relief under wind characteristic s

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O'neill, Brian J. "Using Microfossils in Petroleum Exploration." Paleontological Society Papers 2 (October 1996): 237–46. http://dx.doi.org/10.1017/s1089332600003314.

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When I meet new people and they find out that I'm a paleontologist working for an oil company, the second question they ask (after “What is a paleontologist?”) is usually “Why would an oil company hire one?” Most people think of dinosaurs or, at the very least, trilobites and other invertebrate fossils when they think of paleontology. However, most of the rock samples available to those engaged in finding and developing hydrocarbon resources are in the form of “cuttings.” Cuttings (Baker, 1979) are the small pieces of rock broken up by the drill bit and brought to the surface by the fluid whic

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Unkovich, Murray, Therese McBeath, Rick Llewellyn, James Hall, Vadakattu VSR Gupta, and Lynne M. Macdonald. "Challenges and opportunities for grain farming on sandy soils of semi-arid south and south-eastern Australia." Soil Research 58, no. 4 (2020): 323. http://dx.doi.org/10.1071/sr19161.

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Sandy soils make up a substantial fraction of cropping land in low rainfall (&lt;450 mm p.a.) south and south-eastern Australia. In this paper we review the possible soil constraints to increased production on these soils in this region. Many of these soils have a very low (&lt;3%) clay content and suffer from severe water repellency, making crop establishment and weed control problematic. Crops which do emerge are faced with uneven soil wetting and poor access to nutrients, with crop nutrition constraints exacerbated by low fertility (soil organic matter &lt; 1%) and low cation ex

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Chavhan, Ganesh R., and Lalit N. Wankhade. "Tribological Behavior of Steel Reinforced Glass/Epoxy Hybrid Composites." Advanced Materials Research 1163 (April 2021): 27–39. http://dx.doi.org/10.4028/www.scientific.net/amr.1163.27.

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In this paper, the specific wear rate (SWR) and the coefficient of friction (CoF) of steel embedded glass/epoxy hybrid composites were examined and compared. Experiments were carried on the pin-on-disc machine on different types of composite materials like plain composite (steel volume 0%) and hybrid composites (steel volume 5% and 10%) pressed against a rotating steel disc (EN 31). Composites were fabricated using the hand-lay-up method. The volume percentage of steel pin/pipe varied from 0 to 10% and glass fiber from 50 to 60%, while the percentage of epoxy was kept 40% stable. The experimen

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Hofman, Corinne L., and Alistair J. Bright. "From Suazoid to folk pottery: pottery manufacturing traditions in a changing social and cultural environment on St. Lucia." New West Indian Guide / Nieuwe West-Indische Gids 78, no. 1-2 (2004): 73–104. http://dx.doi.org/10.1163/13822373-90002518.

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Overview of pottery manufacturing traditions in St Lucia, placed within the island's cultural history from pre-Columbian times up to present Afro-Caribbean folk pottery. Authors focus on manufacturing processes in different cultural traditions through history, looking at raw materials used, the shaping and finishing, decoration, and firing process. First, they sketch St Lucia's habitation history since the first Amerindian settlers in 200 AD, and evidence of pottery, which climaxed in the later Suazoid period pottery since about 1150 AD, and discuss how later European colonization and arrival

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Tobo, Y., P. J. DeMott, T. C. J. Hill, et al. "Organic matter matters for ice nuclei of agricultural soil origin." Atmospheric Chemistry and Physics Discussions 14, no. 7 (2014): 9705–28. http://dx.doi.org/10.5194/acpd-14-9705-2014.

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Abstract. Heterogeneous ice nucleation is a~crucial process for forming ice-containing clouds and subsequent ice-induced precipitation. The importance for ice nucleation of airborne desert soil dusts composed predominantly of minerals is relatively well understood. On the other hand, the potential influence of agricultural soil dusts on ice nucleation has been poorly recognized, despite recent estimates that they may account for up to ∼25% of the global atmospheric dust load. We have conducted freezing experiments with various dusts, including agricultural soil dusts derived from the largest d

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Rathore, Dipesh Kumar. "Assessment of Flyash Polymer Composite Material." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 05 (2025): 1–9. https://doi.org/10.55041/ijsrem47623.

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Abstract - The utilization of industrial waste in the development of sustainable construction and engineering materials has gained significant traction over the past decade. Among such materials, fly ash—a byproduct of coal combustion in thermal power plants—has emerged as a promising candidate for use in polymer composite systems. This study investigates the structural, mechanical, and thermal properties of fly ash reinforced polymer composites, focusing on their potential applications in construction, automotive, and aerospace industries. Fly ash, primarily composed of silica, alumina, and u

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Zade, Shanti Kiran, Suresh Babu V., and Sai Srinadh K.V. "Effect of nanoclay, glass fiber volume and orientation on tensile strength of epoxy-glass composite and optimization using Taguchi method." World Journal of Engineering 15, no. 2 (2018): 312–20. http://dx.doi.org/10.1108/wje-08-2017-0286.

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Purpose The purpose of this study is to manufacture test boards for re-enacting plant or field situations where vacuum chamber for expelling gas bubbles and autoclave equipment would not be accessible. This research focuses on the examination and enhancement of tensile strength for the nanocomposites consisting of uniaxial glass fiber mats, nanoclay (NC) and epoxy. Design/methodology/approach The parameters considered are the weight content of Cloisite 15A NC, the volume of glass fiber (Vgf) and the direction of glass fibers (θ). The composites are made by hand lay-up technique and tested acco

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Nielsen, Nina. "Ormslev-dyssen – en dysse uden høj? – Fritstående dysser i tragtbægerkulturen." Kuml 52, no. 52 (2003): 125–56. http://dx.doi.org/10.7146/kuml.v52i52.102641.

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The Ormslev Dolmen – a free-standing dolmen?Free-standing dolmens in the Funnel Beaker CultureThe Ormslev dolmen – which has the appearance of a free-standing dolmen – is situated near Ormslev Stationsby, west of Aarhus in Jutland (fig. 1). The chamber was excavated for the first time around 1870. In 1975 a second excavation was carried out by Torsten Madsen from Moesgaard Museum, because of the threat from ploughing to the surrounding area. This excavation concentrated on the area east and south of the dolmen, where stones and pottery had been ploughed up. The area north and west of the dolme

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Ghislain Berlin Viban, Ali Gürel, and Honorine Nug. "Facies and depositional sequences of Melendiz Confluence Holocene sediments, Central Anatolia, Turkey." International Journal of Science and Research Archive 12, no. 1 (2024): 2287–307. http://dx.doi.org/10.30574/ijsra.2024.12.1.1013.

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The aim of this article is to investigate the Çiftlik Plain and the Central Anatolia Cappadocia Volcanic Province, the unexplored Quaternary fills, and their climate records. This studies has gained importance as it completes a deficiency in the region.A confluence is where a tributary joins a larger river which depicts an important area of deposition which is an essential geomorphological node that controls the downstream routing of flow and (P2), located between latitudes N38°11' and longitudes E34°27', at an altitude of 1532m above sea level in the Çiftlik Basin. In this Confluence in Çiftl

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Wrońska, Iwona, and Tomasz Dubowski. "Axiology of the Law of the European Legal Space and the Development of the Administrative Court System in Poland." Miscellanea Historico-Iuridica 22, no. 2 (2023): 224–43. http://dx.doi.org/10.15290/mhi.2023.22.02.10.

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The primary objective of the study was to determine the unique characteristics of the axiology of the law of the European legal space and its impact on the development of the administrative courts system in Poland by indicating its rooting in legally expressed values, as well as in extra-legal values that are common axioms of the European legal space discussed herein. It was noted that international law – which is the background of the study – determines the basis for the operation of a democratic state, thus exerting a fundamental and significant influence on the formation of standards of dem

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Gertsen, Maria, Leonid Perelomov, Anna Kharkova, Marina Burachevskaya, S. Hemalatha, and Yury Atroshchenko. "Removal of Lead Cations by Novel Organoclays Derived from Bentonite and Amphoteric and Nonionic Surfactants." Toxics 12, no. 10 (2024): 713. http://dx.doi.org/10.3390/toxics12100713.

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For many decades, natural and modified clay minerals have been used as adsorbents to clean up aquatic and soil ecosystems contaminated with organic and inorganic pollutants. In this study, organoclays based on bentonite and various amphoteric and nonionic surfactants were synthesized and tested as effective sorbents for lead ions. The maximum values of R were obtained when describing the sorption processes using the Langmuir model, which ranged from 0.97 to 0.99. The adsorption of lead ions by these organoclays was investigated using different sorption models including the Langmuir, Freundlich

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