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Journal articles on the topic 'Perlite'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Koukouzas, Nikolaos. "Geological and mineralogical features of the perlite from Kimolos island, Greece." Geologica Balcanica 28, no. 1-2 (1998): 29–34. http://dx.doi.org/10.52321/geolbalc.28.1-2.29.

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The geology and mineralogy of the perlite from Kimolos island is examined in this paper. The perlite produced between 2.0 and 0.9 Ma ago during the last volcanic episode of Kumolos volcano in the Aegean sea. It is green in color and presents onion-skin structure under the microscope. The absence of large perlite fragments in the field is characteristic of Kimolos deposit compared with the perlite from the nearby island of Milos. The perlite mainly consists of glass (>85%), while the main mineral phases are plagioclase (with oligoclase-andesine composition), quartz, biotite, titaniferous mag

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2

Lkhasaranov, S. A., L. A. Urkhanova, А. А. Ivanov, N. N. Smirnyagina, and P. Sergelen. "RESEARCH OF PHASE COMPOSITION OF COMPOSITE BINDERS FOR HYDRAULIC CONCRETE." Вестник ВСГУТУ 93, no. 2 (2024): 112–19. http://dx.doi.org/10.53980/24131997_2024_2_112.

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The article studies production of composite binders for hydraulic concrete. Vitreous perlite from the Mukhor-Tala deposit of the Republic of Buryatia was used as an active mineral additive for the composite cement binder. Pozzolanic activity of vitreous and crystallized perlites was determined. Assessment of physical and mechanical properties and phase composition of autoclave-cured lime-perlite binders were carried out for subsequent assessment and identification of the hydrate phases of the composite cement binder. An X-ray phase analysis of Portland cement and a composite binder with vitreo

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3

Pamasengi, Abdul Malik, I. Wayan Warmada, and Wahyu Wilopo. "Adsorption of Cu (II) from Cu Standard Solution Using Expanded Perlite." IOP Conference Series: Earth and Environmental Science 1233, no. 1 (2023): 012001. http://dx.doi.org/10.1088/1755-1315/1233/1/012001.

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Abstract The research aimed to determine the ability of expanded perlite to adsorb or remove Cu (II) metal ions in the solution. Furthermore can be used to reduce Cu levels in the aquatic environment caused by industrial and mining waste. Expanded perlite is a product of perlite resulting from heating at temperatures above 1000°C. Perlite is a volcanic product contains high silica content and a lot of water content so when heating occurs will increase the porosity and surface area that can cause adsorption. Expanded perlite sized < 1 mm can be utilized in the remediation process of mining w

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4

Titova, O. O., L. P. Chernyak, and L. A. Nudchenko. "Zakarpatskiy perlit as component of mineral woven fabric material." Кераміка: наука і життя, no. 1(42) (April 6, 2019): 7–12. http://dx.doi.org/10.26909/csl.1.2019.1.

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Thanks to the peculiarities of the chemical composition and structure, perlite has received application for manufacturing building materials - thermal insulation and ceramic Results over of research of the silicate systems with transcarpathian perlite as raw material for making of mineral astringent material are driven. The features of the chemical-mineralogical composition, phase transformations during burning and astringent properties of material at the use of perlite from Beregovsky deposit in composition initial raw material mixtures are shown. To determine and optimize raw mat

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5

Hamilton, R. D., and N. G. Peletis. "The Determination of Quartz in Perlite by X-ray Diffraction." Advances in X-ray Analysis 33 (1989): 493–97. http://dx.doi.org/10.1154/s0376030800019923.

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AbstractIARC's designation of crystalline silica as a “probable carcinogen” triggered the requirement to label products containing greater than 0.1 % crystalline silica. For perlite and other materials which may contain crystalline silica in levels close to 0.1% an accurate determination is critical from both legal and marketing considerations.Existing analytical techniques for the determination of crystalline silica at levels of less than 1.0% were found to be inadequate to meet the new requirements. An improved technique based on x-ray diffraction has been developed specifically to analyze p

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6

Tsintskaladze, G. P., L. G. Eprikashvili, T. N. Kordzakhia, T. V. Sharashenidze, M. G. Zautashvili, and V. M. Gabunia. "Investigation of some volcanic glasses of georgian deposits." Himia, Fizika ta Tehnologia Poverhni 11, no. 4 (2020): 470–76. http://dx.doi.org/10.15407/hftp11.04.470.

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The paper presents research materials on some hydrogen-containing volcanic glasses of Transcaucasia of acidic composition, concentrated in areas of late Tertiary-Quaternary volcanism, in particular, the central part of the Akhalkalaki plateau, within the Akhaltsikhe valley (Georgia). Studies of natural materials of perlite, obsidian and pechstein were carried out by geological, physico-chemical: petrography, chemical analysis, X-ray diffractometry, and IR spectroscopic methods. The work shows the genesis, structural features and prospects of using these minerals. It has been found that the che

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7

Manukyan, R. V., and N. S. Davydova. "Perlite substrate." Glass and Ceramics 54, no. 1-2 (1997): 28–29. http://dx.doi.org/10.1007/bf02782522.

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8

Özgümüs, A., G. C. Korkmaz, M. Özgür, and S. Yazgan. "CARNATION PRODUCTION IN PERLITE AND PEAT-PERLITE MIXES." Acta Horticulturae, no. 491 (May 1999): 421–24. http://dx.doi.org/10.17660/actahortic.1999.491.66.

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9

Novokhat, O. A., V. T. Vozniuk, H. I. Hritsiuk, and V. Lysii. "Determination of kinetic regularities of the process of drying perlite by radiation method." Journal of Engineering Sciences 8, no. 1 (2021): C11—C17. http://dx.doi.org/10.21272/jes.2021.8(1).c2.

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The actual methods of perlite drying are established. The radiation method of perlite drying is offered. A description of an experimental installation for drying perlite by the radiation method is given. The kinetic regularities of this method are established. Graphical dependences of moisture content on drying time, perlite surface temperature on drying time, and drying speed of perlite on drying time are described. The influence of the initial moisture content of perlite, the value of the heat flux density from the infrared emitter, the thickness of the perlite layer, and the value of the pe

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10

Camelia Aurora, Simionescu, Adnan Arshad, Jerca Ionuț Ovidiu, Dobrin Elena, and Drăghici Elena Maria. "Influence of Growing Substrates on the Production Potential and Post-Harvest Storage Capacity of Tomato Fruits from the Buzău 1600 Variety." International Journal of Advanced Multidisciplinary Research and Studies 4, no. 5 (2024): 279–83. http://dx.doi.org/10.62225/2583049x.2024.4.5.3229.

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This study investigated the influence of various growing substrates on the dry matter and total sugar content of Buzău 1600 tomato fruits, a variety developed at the Buzău Vegetable Research Station and preserved at the Buzău Plant Genetic Resources Bank, Romania. The substrates tested included V1 (Control - Coco peat), V2 (Perlite 2mm), V3 (Perlite 2mm + peat), V4 (Perlite 4mm), V5 (Perlite 4mm + peat), V6 (Perlite 5mm), and V7 (Perlite 5mm + peat). The study further evaluated the effects of a 10-day storage period at 10°C on the fruits grown in V1, V4, V5, V6, and V7 substrates. Results show

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11

Bilgiç, Ceyda, Naile Karakehya, and Adam Voelkel. "Thermal, morphological and surface properties of composite materials with perlite reinforcement." Journal of the Serbian Chemical Society, no. 00 (2024): 93. http://dx.doi.org/10.2298/jsc240808093b.

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This paper deals with the preparation and characterization of perlite/polyvinyl alcohol, perlite/polyvinylpyrrolidone, perlite/polymethyl methacrylate, and perlite/polystyrene composites. Polymer composites were prepared by solvent casting technique with 5 wt. % of perlite filler. Perlite is a filler with unique properties, such as low density and thermal conductivity, thus the development of Polymer-Perlite composites may be interesting for producing lighter packaging with thermal insulation capability. The perlite/polymer nanocomposites were characterized using X-ray diffraction (XRD) analys

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12

Evans, Michael R., and Mary M. Gachukia. "Physical Properties of Sphagnum Peat-based Root Substrates Amended with Perlite or Parboiled Fresh Rice Hulls." HortTechnology 17, no. 3 (2007): 312–15. http://dx.doi.org/10.21273/horttech.17.3.312.

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Ten substrates were formulated by blending perlite or parboiled fresh rice hulls (PBH) to produce root substrates (substrates) that contained either 20%, 30%, 40%, 50%, or 60% (by volume) perlite or PBH, with the remainder being sphagnum peatmoss. All substrates containing PBH had higher total pore space than substrates containing an equivalent amount of perlite. As the percentage perlite increased from 20% to 60%, the total pore space decreased. The total pore space increased as the amount of PBH increased to 50% and then decreased as the amount of PBH increased from 50% to 60%. The air-fille

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13

Niu, Genhua, Denise S. Rodriguez, and Yin-Tung Wang. "Salinity and Growing Medium Regulate Growth, Morphology and Ion Uptake of Gaillardia aristata." Journal of Environmental Horticulture 25, no. 2 (2007): 89–94. http://dx.doi.org/10.24266/0738-2898-25.2.89.

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Abstract A study was conducted to characterize the response of Gaillardia aristata Pursh to salinity (0.8, 2.0 or 4.0 dS/m) and growing media: 100% perlite (Perlite), 100% Sunshine Mix No. 4 (Mix), 1 to 1 (by vol) perlite and Sunshine Mix No. 4 (Perlite Mix), or 1 to 1 Sunshine Mix No. 4 and composted mulch (Mix Mulch). Type of medium did not influence shoot dry weight (DW). However, root to shoot DW ratio was highest for plants grown in Perlite. Shoot DW of plants irrigated with tap water (0.8 dS/m) was higher compared to those irrigated with saline solution at 2.0 or 4.0 dS/m, except for tho

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14

Ahmed, I. M., Lamis A. Attia, and M. F. Attallah. "Modification of perlite to prepare low cost zeolite as adsorbent material for removal of 144Ce and 152+154Eu from aqueous solution." Radiochimica Acta 108, no. 9 (2020): 727–35. http://dx.doi.org/10.1515/ract-2019-3221.

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AbstractThe expanded perlite and base activated perlite (Zeolite-NaA) results from treating perlite has a SiO2:Al2O3 ratio ~2 were used as an adsorbents for the removal of 144Ce and 152+154Eu. The two adsorbents were fully characterized. The factors affecting the sorption of radionuclides onto expanded and modified perlite including contact time, pH, ion concentration were investigated. The modification process of expanded perlite enhanced the removal of 152+154Eu from 17.0 to 97.0 %, while for 144Ce from 22.0 to 91.0 %. Both 144Ce and 152+154Eu obey Langmiur isotherm model in case of using mo

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15

Erwin, John E., D. Schwarze, and R. Donahue. "Factors Affecting Propagation of Clematis by Stem Cuttings." HortTechnology 7, no. 4 (1997): 408–10. http://dx.doi.org/10.21273/horttech.7.4.408.

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Effect of media type, cultivar, and indole-3 butyric acid (IBA) application on Clematis spp. stem cutting rooting was studied. Cutting survival across all treatments was highest on `Comtesse de Bouchard' and `Gypsy Queen' cuttings and lowest on `Jackmani' cuttings. Cutting survival was greatest in perlite and lowest in peat-perlite-vermiculite. IBA application increased `Jackmani' cutting survival only. Time of root emergence was longest on `Jackmani' and least on `Gypsy Queen' cuttings across treatments. Root emergence occurred first in sand and perlite and last in peat-perlite across treatme

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16

Vaiciukynienė, Danutė, Aras Kantautas, Gytis Krusinskas, Andrius Kielė, and Zymantas Rudzionis. "Influence of zeolitized perlite on blended cement properties." Chemical Industry and Chemical Engineering Quarterly 22, no. 3 (2016): 285–92. http://dx.doi.org/10.2298/ciceq150325042v.

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Perlite is the mineral of volcanic origin. Expanded perlite has good heat insulation and sound absorption properties. It is light, resistant to fire, moisture and micro-organisms, harmless to health. However, due to the presence of hyaline phase, its use in Portland cement mixture is problematic. In this paper, the zeolitization of expanded perlite was carried out to improve its hydraulic properties. The conversion of expanded perlite into zeolite material was carried out when Na2O : Al2O3 : SiO2 : H2O molar ratio was equal to 2: 1: 2: 10 and the suspension of starting materials was treated fo

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17

de Oliveira, Amanda Gerhardt, Julio César Jandorno, Elisson Brum Dutra da Rocha, Ana Maria Furtado de Sousa, and Ana Lucia Nazareth da Silva. "Evaluation of expanded perlite behavior in PS/Perlite composites." Applied Clay Science 181 (November 2019): 105223. http://dx.doi.org/10.1016/j.clay.2019.105223.

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18

Adi Darmawan, Didit, Agus Wahyudi, Hasudungan Eric Mamby, and Ijang Suherman. "Characterization of perlite and expanded perlite from West Sumatera, Indonesia." IOP Conference Series: Earth and Environmental Science 882, no. 1 (2021): 012010. http://dx.doi.org/10.1088/1755-1315/882/1/012010.

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Abstract As a volcanic country, Indonesia is rich in natural mineral resources. One of them is perlite that is spread across several provinces in Indonesia. One of the companies with a mining business permit (IUP) for perlite is CV Abdi Bersaudara, located at Padang Pariaman Regency, West Sumatra Province. Perlite rock can be processed through comminution and heating method. Crushed perlite can be used as sandblasting, slag coagulant, source of silica, foundry and steel industry, special casting sand and metal finishing. Meanwhile, the expanded perlite is a product of heated perlite with a tem

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19

Cabuk, Mehmet, Tolga Acar Yesil, Mustafa Yavuz, and Halil Ibrahim Unal. "Colloidal and viscoelastic properties of expanded perlite dispersions." Journal of Intelligent Material Systems and Structures 29, no. 1 (2017): 32–40. http://dx.doi.org/10.1177/1045389x17698248.

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In this study, structural properties of unexpanded perlite and expanded perlite particles were characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis techniques. Electrokinetic properties of unexpanded perlite and expanded perlite particles in polar (water) and non-polar (silicone oil) media were determined using zeta ( ζ)-potential measurements as functions of time, pH, valences of electrolytes, type of surfactants, and temperature. Antisedimentation stabilities of the unexpanded perlite and expanded perlite particles disperse

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20

Cole, Janet C., and Diane E. Dunn. "Expanded Polystyrene as a Substitute for Perlite in Rooting Substrate." Journal of Environmental Horticulture 20, no. 1 (2002): 7–10. http://dx.doi.org/10.24266/0738-2898-20.1.7.

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Abstract Stem cuttings of rose-of-sharon (Hibiscus syriacus L. ‘Jeanne d'Arc’), barberry (Berberis thunbergii DC. ‘Crimson Pygmy’), juniper (Juniperus horizontalis Moench. ‘Plumosa Compacta’), and arborvitae (Thuja occidentalis L. ‘Woodwardii’) were rooted in substrates consisting of 0%, 25%, 50%, 75%, or 100% (by vol) perlite or expanded polystyrene beads with peat. Percentage of rose-of-sharon cuttings rooted and root ratings were lower with polystyrene than with perlite. Statistically, more barberry cuttings rooted with polystyrene (78.8%) than with perlite (78.3%), but the difference in ro

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Hanna, H. Y. "Properly Recycled Perlite Saves Money, Does Not Reduce Greenhouse Tomato Yield, and Can Be Reused for Many Years." HortTechnology 15, no. 2 (2005): 342–45. http://dx.doi.org/10.21273/horttech.15.2.0342.

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A study was conducted to determine if raising tomatoes (Lycopersicon esculentum) in cleaned and disinfected used perlite would be more economical than new perlite and have no negative impact on yield. Cleaning and disinfecting used perlite for recycling saved 56% of the cost to replace the media and reduced salt content to the optimum level recommended for raising container grown plants. Disinfecting used perlite with hot water raised media temperatures above limits necessary to kill several fungi and nematodes. Tomatoes planted in recycled perlite produced greater marketable yield and heavier

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22

Li, Ling Li, Wei Feng Teng, Jin Cheng Zhang, Wei Wu, and Qing Yi Shang. "Effect of Surface Vitrification on the Properties of Insulation Board of Expanded Perlite." Key Engineering Materials 726 (January 2017): 586–90. http://dx.doi.org/10.4028/www.scientific.net/kem.726.586.

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The surface-vitrified and expanded perlite is a new, high-quality insulation materials. It is studied to the effects on performances of the glass surface to expanded perlite insulation board, through comparing with the openings of expanded perlite, expanded and vitrified small ball and surface-vitrified and expanded perlite. A large number of experiments have been done on the physical properties of the insulation board with surface-vitrified and expanded perlite. It shows that the insulation board with surface-vitrified and expanded perlite has a low density, high strength, low water absorptio

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23

Sodeyama, Kenichi, and Yoshio Sakka. "Preparation and Utilization of Fine Expanded Perlite." Key Engineering Materials 280-283 (February 2007): 701–6. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.701.

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Hollow glass microspheres named expanded perlite have been prepared from perlite, but the size is usually above 20 µm. In the conventional preparation method, it is difficult to produce fine expanded perlite with particle size under 20 µm because the water contained in finely milled perlite particle, which is the origin of foaming, is evolved during heating process. A new fluidized sand-bedfurnace has developed and fine expanded perlite particles with particle size less than 15 µm and bulk density under 0.5 g/cm3 are prepared successfully. Using the fine expanded perlite, lightweight composite

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Suherman, Ijang, Triswan Suseno, and Agus Wahyudi. "Analisis pasar expanded perlite Indonesia." Jurnal Teknologi Mineral dan Batubara 18, no. 2 (2022): 119–32. http://dx.doi.org/10.30556/jtmb.vol18.no2.2022.1139.

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The availability of perlite is always associated with volcanic activities, so perlite has a huge potential in Indonesia. The use of perlite abroad has developed for various applications, but is still limited in Indonesia. One of the perlite development efforts in Indonesia is an analysis to seek market of the expanded perlite. The purpose of this market analysis is to find out the characteristics and opportunities of the expanded perlite market both domestically and export. Methods of data collection were carried out through direct survey and non-survey, while the processing model and technica

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Gachukia, Mary M., and Michael R. Evans. "Root Substrate pH, Electrical Conductivity, and Macroelement Concentration of Sphagnum Peat-based Substrates Amended with Parboiled Fresh Rice Hulls or Perlite." HortTechnology 18, no. 4 (2008): 644–49. http://dx.doi.org/10.21273/horttech.18.4.644.

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Substrates were formulated by blending parboiled fresh rice (Oryza sativa) hulls (PBH) or perlite with sphagnum peat (peat) to produce root substrates (substrates) that contained 20%, 30%, 40%, 50%, or 60% (by volume) PBH or perlite with the remainder being peat. After 0 (initial mixing), 4, or 8 weeks in a greenhouse environment, samples were taken and pH, electrical conductivity (EC), nitrate (NO3−), ammonium (NH4+), phosphorus (P), and potassium (K) were determined. As the amount of PBH or perlite in the substrate was increased, the pH increased. After 0 and 8 weeks, the pH of substrates co

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Evans, Michael R., and Mary M. Gachukia. "Secondary Macro- and Microelements in Sphagnum Peat-based Substrates Amended with Parboiled Fresh Rice Hulls or Perlite." HortTechnology 18, no. 4 (2008): 650–55. http://dx.doi.org/10.21273/horttech.18.4.650.

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Substrates were formulated by blending parboiled fresh rice (Oryza sativa) hulls (PBH) or perlite with sphagnum peat (peat) to produce root substrates (substrates) that contained 20%, 30%, 40%, 50%, or 60% (by volume) PBH or perlite with the remainder being peat. After 0, 4, or 8 weeks in a greenhouse environment, samples were taken and calcium (Ca), magnesium (Mg), sulfur (S), iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), and boron (B) were determined. At all sampling times, substrates containing PBH had higher Ca concentrations than perlite-containing substrates. At all sampling times,

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27

ÖZKAN, Abdullah, Çağlar EKER, and Vildan ÖZKAN. "Comparison of The Effect of Raw and Expanded Perlite on Water Based Drilling Mud." Journal of the Institute of Science and Technology 12, no. 3 (2022): 1644–56. http://dx.doi.org/10.21597/jist.1087788.

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The performance of the drilling fluid used is very important for a successful operation in drilling applications. Recently, developments in drilling mud technology have gained economic significance as well as developments in horizontal and deep-sea drilling, where expensive technologies are used. In this study, it is aimed to compare the effects of raw perlite and expanded perlite on water-based drilling mud. For this purpose, water-based drilling muds were prepared and raw perlite and expanded perlite was added to the prepared mud samples at different rates (0.1-5 % w.v-1). Rheological proper

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28

Fazlil Ilahi, Wan Fazilah, Nur Syaffiqa Izleen Rosdi, and Safwah Adani Zainuddin. "Estimating Unsaturated Hydraulic Conductivity of Cocopeat-Perlite Mixtures Using RETC Software." Journal of Tropical Resources and Sustainable Science (JTRSS) 13, no. 1 (2025): 109–15. https://doi.org/10.47253/jtrss.v13i1.1323.

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Cocopeat in soilless culture needs to be mixed with other coarser substrate to increase aeration medium. Hydraulic conductivity is fluid ability measurement to flow through pore spaces happens in saturated and unsaturated conditions. This study focused to estimate cocopeat-perlite unsaturated hydraulic conductivity using RETC software. 6 treatments were used, 100% cocopeat act as control treatment (T1), while treatments with different cocopeat-perlite ratio (T2=3 cocopeat:1 perlite;T3=2 cocopeat:1 perlite;T4=1 cocopeat:1 perlite;T5=1 cocopeat:2 perlite;T6=1 cocopeat:3 perlite) has been use for

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Peng, Kang, and Hua Ming Yang. "Preparation of Aerogel-Modified Expanded Perlite and its Application in Heat Insulation Coating." Advanced Materials Research 668 (March 2013): 360–64. http://dx.doi.org/10.4028/www.scientific.net/amr.668.360.

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Building insulation is an important part of building energy conservation. The heat insulation coating preapred from modified expanded perlite has been a potential building thermal insulation material. In this paper, aerogel was filled into the pores of expanded perlite by vacuum impregnation method to produce aerogel-modified expanded perlite at ambient pressure. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and N2 adsorption–desorption techniques. The results revealed that aerogel could be well filled into the pores of expanded perlite, and the

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Aziz, Hermansyah, Yennie Puspa Bukasir, and Dwi Puryanti. "FILTRASI AIR RAWA GAMBUT DENGAN PADUAN PERLIT-SEMEN-KAPUR." Jurnal Riset Kimia 1, no. 1 (2015): 15. http://dx.doi.org/10.25077/jrk.v1i1.49.

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ABSTRACT Peat water purification by filtration with perlite-cement-lime mixtures was preliminary studied. The filtration was realized under static condition without any pressure. From the experimental results obtained that perlite composition in the mixture plays an important role in the filtration processing. Otherwise the some physical properties of perlite-cement-lime mixture was also determined. Key words: peat water, perlite.

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31

Melikyan, Zohrab, Naira Egnatosyan, and Siranush Egnatosyan. "Developing of Technology for Production of Perlite Based Insulation New Material and Elaborating of Methods for Calculation and Design of Damp Thermal Insulation Drying System." Materials Science Forum 974 (December 2019): 211–16. http://dx.doi.org/10.4028/www.scientific.net/msf.974.211.

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During last 20-25 years in Armenia has been established new thermal insulation material’s production. This program in short is named “Developing of perlite insulation technology”. The perlite is a volcanic mineral in form of soft stone, which is extracted from perlite mines of Armenia. First of all, the perlite is a construction material, which traditionally has been used in building construction purposes. At the same time, it is a good row material for making thermal insulation goods. The technology of transformation of perlite stone into perlite insulation material is developed by Professor

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Makaryan, I. M., N. B. Knyazyan, E. M. Nazaryan, A. G. Arustamyan, E. S. Agamyan, and A. A. Akopyan. "Perlite Processing Method." Theoretical Foundations of Chemical Engineering 58, no. 1 (2024): 132–36. https://doi.org/10.1134/s0040579524700246.

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33

Antonucci, P. L., M. L. Crisafulli, N. Giordano, and N. Burriesci. "Zeolitization of perlite." Materials Letters 3, no. 7-8 (1985): 302–7. http://dx.doi.org/10.1016/0167-577x(85)90027-8.

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34

Arutyunyan, N. M., N. B. Knyazyan, V. P. Toroyan, and K. A. Kostanyan. "Perlite-based glasses." Glass and Ceramics 54, no. 9-10 (1997): 311–12. http://dx.doi.org/10.1007/bf02765864.

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35

Rithani, R., and M. Kumar. "Experimental Study on Subgrade Stabilization Using Geogrid and Perlite." International Journal for Research in Applied Science and Engineering Technology 11, no. 6 (2023): 3572–77. http://dx.doi.org/10.22214/ijraset.2023.54338.

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Abstract: This paper presents the summary of experimental program to evaluate the soil stabilized with perlite and the geogridreinforcement. Due to its pozzolanic properties, perlite, a glassy volcanic rock, may be utilised as a stabilising agent. The standard California bearing ratio (CBR) laboratory tests were performed on the soil samples with various combinations of perlite and single layer of geogrid reinforcement placed at various height. The laboratory experiments were undertaken to investigate the impact of using perlite (0%, 10%, 20%, 30%) and geogrid (single layer of geogrid reinforc

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36

Evans, Michael R., and Maryanne Gachukia. "Fresh Parboiled Rice Hulls Serve as an Alternative to Perlite in Greenhouse Crop Substrates." HortScience 39, no. 2 (2004): 232–35. http://dx.doi.org/10.21273/hortsci.39.2.232.

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Ten substrates were formulated by blending perlite or parboiled fresh rice hulls (PFH) at 20%, 30%, 40%, 50%, or 60% (v/v) with sphagnum peat. After 6 weeks, NH4+ concentrations were not significantly different among substrates containing perlite and those containing equivalent amounts of PFH. Nitrate concentrations were significantly higher in the 40% perlite substrate than in the 40% PFH substrate, but there were no significant differences in NO3- concentrations among the remaining substrates containing equivalent amounts of PFH or perlite. When tomato (Lycopersicon esculentum Mill.) was gro

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Saddika, Mohamadi, Arbaoui Ahcène, Boumaiza Malika, Kahlal Sofiane, and Yagoub Ayoub. "Physico-mechanical characterization and study of the performance of an ecofriendly mortar based on perlite of Maghnia-Algeria." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 2 (2024): e12299. https://doi.org/10.54021/seesv5n2-806.

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In the cement industry, the search for more economical binders using waste and natural resources has become crucial to overcome the shortage of Portland cement and respect the environment. Algeria has significant potential in natural resources such as perlite, a volcanic rock that can be finely ground and used as an active mineral additive in the production of cement to reduce the release of CO2. This study examines the benefits and feasibility of using perlite as a partial substitute for cement in mortar manufacturing, with volume substitution rates of 5%, 10%, 15%, 20% and 25%. Tests were ca

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Omeroglu, Sunay, Behcet Becerir, and Esra Karaca. "Dyeing and Some Fastness Properties of Novel Perlite-Containing Polyester Woven Fabrics." AATCC Journal of Research 9, no. 2 (2022): 81–89. http://dx.doi.org/10.1177/24723444221081456.

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This article is focused on the comparison of dyeing, and washing and light fastness properties of conventional and novel perlite-containing polyester woven fabrics via color measurements. All the production processes for the regular and perlite-containing polyester filament yarns were the same. The fabrics were dyed with three medium level energy disperse dyes of different hues in order to observe the shade change caused by the intrinsic yellowness of the perlite-containing fabric. Dyeing and fastness properties of the dyed fabrics were evaluated by their corresponding lightness (L*), chroma (

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Petranek, Vít, Pavel Krivenko, Оleg Petropavlovsky, and Sergii Guzii. "Perlite Concrete Based on Alkali Activated Cements." Advanced Materials Research 897 (February 2014): 280–83. http://dx.doi.org/10.4028/www.scientific.net/amr.897.280.

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The use of the alkali activated cements for the manufacture of perlite concrete pressed and vibro-pressed products for heat insulation intended for various purposes was studied. The interfacial transition zone perlite grain cement stone was examined in order to reveal features of its formation. These features allow to create a dense and strong shell/caging around the perlite grain which helps to avoid its corrosion and produce perlite concretes with high durability.

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Londra, Paraskevi A. "Simultaneous Determination of Water Retention Curve and Unsaturated Hydraulic Conductivity of Substrates Using a Steady-state Laboratory Method." HortScience 45, no. 7 (2010): 1106–12. http://dx.doi.org/10.21273/hortsci.45.7.1106.

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For effective irrigation and fertilization management, the knowledge of substrate hydraulic properties is essential. In this study, a steady-state laboratory method was used to determine simultaneously the water retention curve, θ(h), and unsaturated hydraulic conductivity as a function of volumetric water content, K(θ), and water pressure head, K(h), of five substrates used widely in horticulture. The substrates examined were pure peat, 75/25 peat/perlite, 50/50 peat/perlite, 50/50 coir/perlite, and pure perlite. The experimental retention curve results showed that in the case of peat and its

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Giroux, Gregory J., Brian K. Maynard, and William A. Johnson. "Comparison of Perlite and Peat:perlite Rooting Media for Rooting Softwood Stem Cuttings in a Subirrigation System with Minimal Mist." Journal of Environmental Horticulture 17, no. 3 (1999): 147–51. http://dx.doi.org/10.24266/0738-2898-17.3.147.

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Abstract Perlite and mixtures of milled sphagnum peat and perlite (1:16, 1:8, and 1:4 by vol) were compared as rooting media in a propagation system utilizing subirrigation with minimal mist for rooting softwood stem cuttings of nine woody plant species. The influence of rooting medium on percentage rooting, number of roots per rooted cutting, and length of the longest roots on each cutting varied with species. Composition of the media had no effect on percentage of cuttings that rooted, number of roots per rooted cutting, or length of the longest root of ‘Late Blue’ highbush blueberry (Vaccin

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Al-Selwi, Khaled Mohammed Thabet. "Occurrences of Perlite Deposits in Yemen." Thamar University Journal of Natural & Applied Sciences 7, no. 7 (2023): 97–111. http://dx.doi.org/10.59167/tujnas.v7i7.1347.

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Yemen, which is lies in South West Asia country, in recent years has been known to occasionally produce small quantities of industrial rocks and minerals. Perlite is deposit of comparatively recent interest, it was first described as; a glassy rhyolite, the perlite occurrences are almost always associated with Cenozoic (Tertiary) volcanic rocks of Yemen as; rhyolitic, agglomerate and volcanic tuff, it widespread in various districts in Yemen, among Taiz and Ibb, Thamar districts..etc. Yemeni perlite deposits ranges in colour from greyish black, greenish black to almost black and has vitr

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Hrbek, Vladimír, Veronika Koudelková, Pavel Padevět, and Petr Šašek. "MICROSCOPIC FEATURES OF CEMENT PASTE MODIFIED BY FINE PERLITE." Acta Polytechnica CTU Proceedings 7 (December 9, 2016): 12. http://dx.doi.org/10.14311/app.2017.7.0012.

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The use of waste material and replacement of binder element in cementitious composites is in focus of material development. Perlite in the construction industry is usually used in form of lightweight aggregate enhancing the insulating performance of concrete. This paper focuses on integration of fine perlite into the cement matrix and possible replacement of the cement binder in the composition of the material. The macromechanical performance of the modified paste is tested on specimens with 5, 10, 15 and 20% fine perlite substitution and pure cement sample. To distinguish the effect of the pe

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Suherman, I., A. Wahyudi, H. E. Mamby, and D. A. Darmawan. "Expanded perlite commercialization techno-economic analysis in Indonesia." IOP Conference Series: Earth and Environmental Science 882, no. 1 (2021): 012085. http://dx.doi.org/10.1088/1755-1315/882/1/012085.

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Abstract Utilizing a perlite processing plant in Lampung is one of the public services of the Research and Development Center for Mineral and Coal Technology (TEKMIRA). The plant has been fully revitalized and is ready to be developed for commercialization through joint operations. The domestic market for perlite is not as advanced as the world market. These are both opportunities and challenges for the expanded perlite business. Techno-economic analysis can provide an overview of expanded perlite processing and cash flow forecasts during the implementation period of the commercialization proj

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Mansour, Sabria Malika, and Youcef Ghernouti. "Behaviour of Self-Compacting Concrete incorporating Natural Perlite used as Part of Cement and as Aggregates." Selected Scientific Papers - Journal of Civil Engineering 16, no. 2 (2021): 115–32. http://dx.doi.org/10.2478/sspjce-2021-0020.

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Abstract Perlite, a natural glassy volcanic rock could be used as supplementary cementitious material to reduce environmental pollution and the consumption of precious natural resources in the concrete industries. The aim of this work is to assess natural perlite used as 50% aggregates substitution by volume (sand or gravel) and as 10%, 15%, 20% cement substitution in self-compacting concrete. Workability characteristics and mechanical properties were analysed. Results showed that replacing 50% of natural aggregates with 50% of perlite aggregates or substituting cement with 10% of perlite powd

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Ercisli, Sezai, Ustun Sahin, Ahmet Esitken, and Omer Anapali. "Effects of some growing media on the growth of strawberry cvs. 'Camarosa' and 'Fern'." Acta Agrobotanica 58, no. 1 (2012): 185–91. http://dx.doi.org/10.5586/aa.2005.024.

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This study evaluated the development of above and under ground parts of strawberry plants cvs. 'Fern' and 'Camarosa ' in a glasshouse using perlite, forest soil, finpeat, peat, finpeat+perlite (1:1) and peat+perlite (1:1) as substrates. The effects of different growing media on development of above and under ground parts of plant were statistically significant. The highest number of primary roots per plant, length of the most developed roots and number of crowns per runner were obtained from perlite, finpeat+perlite and peat medium, respectively, in both cultivars. The runner length, number of

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Hanna, Hanna Y. "Reducing Time and Expense to Recycle Perlite for Repeat Use in Greenhouse Tomato Operations." HortTechnology 20, no. 4 (2010): 746–50. http://dx.doi.org/10.21273/horttech.20.4.746.

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Planting greenhouse tomatoes (Solanum lycopersicum) in the same perlite more than once without reconditioning to restore medium loose structure, desalination to remove excess salt, and disinfection to guard against pest contamination is risky, and replacing the perlite to produce every new crop is costly. Reconditioning and treating perlite with hot water at a minimum cost provides a favorable solution for both problems and saves natural resources. A study was conducted in a 30 × 96-ft greenhouse in Spring 2007, 2008, and 2009 (January–July) to evaluate three methods for perlite recycling cost

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Li, Qi Jin, Guo Zhong Li, and Cong Cong Jiang. "Study on Paraffin/Expanded Perlite Composite Phase Change Energy-Storage Materials." Applied Mechanics and Materials 327 (June 2013): 181–84. http://dx.doi.org/10.4028/www.scientific.net/amm.327.181.

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Paraffin/expanded perlite composite phase change energy-storage material (PPCM) was prepared by vacuum adsorption method with expanded perlite as adsorption material and paraffin as phase change energy-storage material. The diffused-exudative circle method was used to determine that the best adsorption quantity of expanded perlite was 65%. The phase transition process and microstructure of PPCM with the best adsorption quantity were characterized by DSC and SEM. The results shown that the internal micropores of expanded perlite particles were almost completely filled with paraffin and the expa

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Yang, Ping, Wei Xia Zhao, Jin Chao Yang, Li Liu, and Mian Li Cao. "Research on Homogeneity of Expanded Perlite Lightweight Concrete." Key Engineering Materials 599 (February 2014): 74–77. http://dx.doi.org/10.4028/www.scientific.net/kem.599.74.

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This paper discusses the reason of segregation of expanded perlite lightweight aggregate concrete. By adding fly ash, high effective admixture, the expanded perlite pre-wetting and so on,the expanded perlite lightweight concrete,CL5-CL10,was confect with good workability, homogeneity, no bleeding and segregation, easy casting and excavation.

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Belaribi, Omar, Omar Safer, Nadia Belas, Khalil Belguesmia, and Rachid Hadj Sadok. "Influence de la perlite sur le comportement mécanique, l’absorption capillaire et la conductivité thermique des mortiers." Journal of Engineering and Exact Sciences 10, no. 3 (2024): 18800. http://dx.doi.org/10.18540/jcecvl10iss3pp18800.

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Le sol algérien est riche en matériaux pouzzolaniques naturels, tels que la perlite naturelle, dans la région ouest plus précisément Hammam Boughrara à Maghnia (Tlemcen). Malheureusement, ils ne sont pas encore totalement exploités. La perlite, grâce à ses composants chimiques en l’occurrence la silice et l'alumine qui lui procurent des propriétés intéressantes, s’octroie le privilège d’être utilisée comme un ajout minéral actif dans la production du ciment. Cette étude contribue à apporter plus de données relatives à la valorisation de la perlite comme substitut partiel au ciment. Pour ce fai

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