Results 151 to 160 of about 2,491 (167)
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Microwave Drying of Expanded Perlite Insulation Board
Industrial & Engineering Chemistry Research, 2012The microwave drying process intensification of new inorganic thermal insulation board, containing expanded perlite and inorganic binder, was investigated in a multimode microwave applicator, with a 1.8 kW, 2.45 GHz microwave source. Ability to generate heat inside moistened material and to avoid the problem of heat conduction to the core of the ...
Blaz Skubic, Mitja Lakner, Igor Plazl
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Development of Expanded Perlite Board for Thermal Insulation
Chiang Mai Journal of Science, 2022In this study, the perlite-based insulating material is developed to meet ASTM C610 standards in a form of the board. Expanded perlite powders with a tapped density of 53 and 150 kg/m³ were used in this study. Sodium silicate used as a proper binder at various concentrations was mixed with perlite powders.
Nittaya Keawprak +5 more
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Numerical simulation of bubble growth in expanding perlite
Journal of Materials Science, 2001Aiming to improve the comprehension of the expansion process of perlite, a numerical study has been carried out, concerning the water vapour bubble growth in softened perlite melt. The physical properties of the melt and temperature history during the expansion process are varied, in order to determine the most influencing parameters. Calculated bubble
K. Zähringer, J.-P. Martin, J.-P. Petit
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Research on Homogeneity of Expanded Perlite Lightweight Concrete
Key Engineering Materials, 2014This 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.
Ping Yang +4 more
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Elastic properties of green expanded perlite particle compacts
Powder Technology, 2017Abstract This paper describes an experimental and analytical study characterizing the elastic properties of packed beds of expanded perlite. Elastic moduli of packed beds of expanded perlite particles (expanded siliceous volcanic glass) were investigated by elastic wave velocity measurement along the axial direction.
Haleh Allameh-Haery +4 more
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Impact response of lightweight mortars containing expanded perlite
Cement and Concrete Composites, 2013Abstract This paper describes the mechanical response of lightweight mortars subjected to impact loading in flexure. Expanded perlite aggregate with a bulk density of 64 kg/m3 was used at between 0 and 8 times by volume of Portland cement to yield a range of mortars with density between 1000 and 2000 kg/m3.
Derek Kramar, Vivek Bindiganavile
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Catalytic pyrolysis of car tire waste using expanded perlite
Waste Management, 2011In this study, the non-catalytic and catalytic pyrolysis experiments were conducted on the sample of tire waste using expanded perlite as an additive material to determine especially the effect of temperature and catalyst-to-tire ratio on the products yields and the compositions and qualities of pyrolytic oils (NCPO and CPO).
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Water Retention Properties and Microstructure of Compacted Expanded Perlite
2012A double porosity structure is recognized in compacted expanded perlite, a granular material made from crushed perlite rock subjected to heating treatment. Due to its generation process, each grain has a micro-scale porosity network and a series of closed pores (isolated holes), while particle size distribution is highly uniform.
M. Caruso, STERPI, DONATELLA VALERIA
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Expanded perlite based on naturally occurring silicate rock
2007 International Forum on Strategic Technology, 2007The distinguishing feature of perlite from other volcanic glasses is that when it is heated to a suitable point in its softening range, it expands from four to twenty times its original volume. This expansion is due to the presence of two to six percent of combined water in the crude perlite rock. Its unique internal structure consists of numerous tiny
N. Bayansaikhan +2 more
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Characterization and Pozzolanic Activity of Waste Expanded Perlite
Juniorstav 2024: Proceedings 26th International Scientific Conference Of Civil EngineeringThis paper deals with characterization of multiple waste expanded perlites (WEP) from local central European sources with an emphasis on their suitability for use in cement composites. Influence of the milling time on their properties was studied.
Hermann, Radek +4 more
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