caa a22 4500 467925887 CHVBK 20180406152929.0 cr unu---uuuuu 170328e20060901xx s 000 0 eng 10.1134/S0020168506090202 doi (NATIONALLICENCE)springer-10.1134/S0020168506090202 A mechanism of perlite expansion [Elektronische Daten] [Av. Varuzhanyan, Ar. Varuzhanyan, H. Varuzhanyan] We describe a novel process for expanding perlite rocks, at temperatures from 1220 to 1370 K and elevated pressures, (3.3-16.0) × 105 Pa, in flowing water vapor. Our results demonstrate for the first time that heating markedly increases the compressive strength of perlite, reducing its viscosity and giving rise to perlite expansion in the central part of the sample owing to disruption of the rigid bonding between structural units and the formation of unstable hydrogen bridges. As a result, the mineral becomes capable of retaining the water present in the rock without cracking or shattering. Pleiades Publishing, Inc., 2006 Varuzhanyan Av Manvelyan Institute of General and Inorganic Chemistry, Academy of Sciences of Armenia, ul. Ovsep Argutyan Vtoroi per. 10, 0051, Yerevan, Armenia aut Varuzhanyan Ar Manvelyan Institute of General and Inorganic Chemistry, Academy of Sciences of Armenia, ul. Ovsep Argutyan Vtoroi per. 10, 0051, Yerevan, Armenia aut Varuzhanyan H. Manvelyan Institute of General and Inorganic Chemistry, Academy of Sciences of Armenia, ul. Ovsep Argutyan Vtoroi per. 10, 0051, Yerevan, Armenia aut Inorganic Materials Nauka/Interperiodica 42/9(2006-09-01), 1039-1045 0020-1685 42:9<1039 2006 42 10789 https://doi.org/10.1134/S0020168506090202 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020168506090202 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Varuzhanyan Av Manvelyan Institute of General and Inorganic Chemistry, Academy of Sciences of Armenia, ul. Ovsep Argutyan Vtoroi per. 10, 0051, Yerevan, Armenia aut NATIONALLICENCE 700 1- Varuzhanyan Ar Manvelyan Institute of General and Inorganic Chemistry, Academy of Sciences of Armenia, ul. Ovsep Argutyan Vtoroi per. 10, 0051, Yerevan, Armenia aut NATIONALLICENCE 700 1- Varuzhanyan H. Manvelyan Institute of General and Inorganic Chemistry, Academy of Sciences of Armenia, ul. Ovsep Argutyan Vtoroi per. 10, 0051, Yerevan, Armenia aut NATIONALLICENCE 773 0- Inorganic Materials Nauka/Interperiodica 42/9(2006-09-01), 1039-1045 0020-1685 42:9<1039 2006 42 10789 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer