Phase Formation and Properties of Aluminum-Silicate Binders of Dehydration Type of Hardening with the Use of Perlite

Properties of the aluminum-silicate binder of dehydration type of hardening with the use of natural perlite have been studied. The interconnection of the influence of dispersion of perlite raw material and the molar ratio of oxides in the alkaline-activated binding system of Na₂O and Al₂O₃ on the final performance characteristics of obtained alkaline-perlite composites has been established. When the degree of dispersion of perlite particles is low, to ensure higher strength characteristics of the stone the larger quantity of alkaline component is required than for fine perlite. It is revealed that the introduction of excess amount of alkali into the aluminum-silicate system leads to the retardation of structure formation processes in the hardening alkali-perlite matrix and, as a result, to reduced strength characteristics. Phase peculiarities of aluminum-silicate composites on the basis of perlite raw material, which are formed under impacts of various time and temperature parameters, have been studied.

авторы

R.V. CHIZHOV¹, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.)
N.I. KOZHUKHOVA¹, Candidate of Sciences (Engineering)
I.V. ZHERNOVSKY¹, Candidate of Sciences (Geology and Mineralogy)
D.N. KOROTKIH², Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)
E.V. FOMINA¹, Candidate of Sciences (Engineering)
M.I. KOZHUKHOVA¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

¹ Belgorod State Technological University named after V.G. Shukhov (46, Kostyukov Street, Belgorod, 308012, Russian Federation)
² Voronezh State University of Architecture and Сivil Engineering (84, 20-letija Oktjabrja Street, Voronezh, 394006, Russian Federation)