Open AccessTHE RESEARCH OF THE STRUCTURE FORMATION PROCESSES OF DISPERSE MATERIALS AT THE OBTAINING OF THE COMPOSITE BUILDING MATERIALS WITH PREDETERMINED PROPERTIES
Author(s) -
S. N. Zolotuhin,
Olga Kukina,
Anatoly Abramenko,
V. Ja. Mishhenko,
A. A. Gapeev,
Е. А. Соловьева,
E. A. Savenkova,
Yu. V. Kamzolov
Publication year - 2017
Publication title -
izvestiâ ûgo-zapadnogo gosudarstvennogo universiteta
Language(s) - English
Resource type - Journals
eISSN - 2686-6757
pISSN - 2223-1560
DOI - 10.21869/2223-1560-2017-21-5-93-106
Subject(s) - diffractometer , materials science , composite number , absorption of water , microstructure , hydrate , mineralogy , composite material , chemical engineering , chemistry , organic chemistry , scanning electron microscope , engineering
The basic concepts of the developed theory of the structure formation of dispersed materials in the preparation of composite building materials (CBM) with predetermined properties are proposed in the article. It is shown that, in addition to laborious methods of mathematical planning, low-cost research methods, for example, thermal methods, can be used to predict the properties of CBM. The data of differential scanning calorimetry, microscopic analysis, confirming the hypothesis that the thicknesses of water films on the surface of particles of disperse systems affect the formation of nano- and microstructures of CBM are presented. On the basis of VSTU in the center of collective use of the name of Professor Yu.M. Borisov conducted a number of tests on instruments of various domestic and foreign manufacturers, such as the RAULIKD derivative, the automatic diffractometer PANalytical EMPYREAN, the X-ray diffractometer DRON-2 and others using laser diffraction, synchronous thermal analysis. On the basis of the conducted experiments, the following conclusions were made: the IPFM systems with a phosphogypsum dihydrate content of 50 ... 60%, 10% lime, sandy loam 40 ... 30% possess the best physical-mechanical properties, water absorption and softening coefficients; drying at temperatures of 60 ... 65 ° C of the obtained materials leads to a decrease in the thickness of the water films between the particles and promotes further strength growth; an understanding of the mechanism of the effect of the thickness of aqueous films on the processes of the formation of hydrate hydrophilic systems allows us to predict that various technological methods leading to a reduction in their thickness will lead to an increase in the strength and other indices of materials obtained from non-flammable technologies.