DRY MIXTURES

[:ru]Лапко К. Н.[:en]Lapko K. N.[:] [:ru]канд. хим. наук, доцент, Белорусский государственный университет, г. Минск, Беларусь[:en]Cand. Chem. Sc., Associate Professor, Belarusian State University, Minsk, Belarus[:]

[:ru]Апанасевич Н. С.[:en]Apanasevich N. S.[:] [:ru]стажер младшего научного сотрудника, Белорусский государственный университет, г. Минск, Беларусь[:en]Junior Researcher Trainee, Belarusian State University, Minsk, Belarus[:]

[:ru]Шульга Т. Н.[:en]Shulga T. N.[:] [:ru]инженер, Белорусский государственный университет, г. Минск, Беларусь[:en]Engineer, Belarusian State University, Minsk, Belarus[:]

[:ru]Кудлаш А. Н.[:en]Kudlash A. N.[:] [:ru]старший преподаватель, Белорусский государственный университет, г. Минск, Беларусь[:en]Senior Lecturer, Belarusian State University, Minsk, Belarus[:]

[:ru]Галеева Н. Н.[:en]Galeyeva N. N.[:] [:ru]научный сотрудник, Белорусский государственный университет, г. Минск, Беларусь[:en]Reseacher; Belarusian State University, Minsk, Belarus[:]

Alitinform №2-3 (39) 2015 г. 78-83 p.

Abstract

In order to improve the production method of thermostable composite materials based on phosphate binders, the authors studied the possibility of using solid magnesium phosphate (Mg(H ₂PO₄)₂∙4H₂O) and solid calcium phosphate (Ca(H₂PO₄)₂∙H₂O) as binders. The strength properties and thermal stability of phosphate composites were examined. It was found that thermal treatment of composites at temperatures of up to 1,000 °С leads to a triple successive increase of the compressive strength. The thermal behavior of the phosphate matrix demonstrates its good performance for designing thermostable composite materials.
The effect of microwave treatment (radiation power, sintering time) on physical and chemical properties of the produced composite materials was studied as well. It was found that microwave radiation provides materials with the required strength properties and reduces energy consumption and treatment time significantly.

Key words:

thermostable composite materials; solid phosphate binders; dry building mixtures; microwave treatment