Press-Molding Processes and Their Influence on Adobe Brick Quality

Scientific basis and practical results concerning the reasons for structure decompaction of pressed adobes of silicate and ceramic bricks are presented. The main reason for this phenomenon lies in the large surface energy of disperse particles of the solid phase, under the influence of which the water in the molding mixture becomes connected in the form of surface films or inter-granular capillaries. Under the impact of internal forces, self-compaction or self-decompaction of the molding mix occurs. An internal stress in the molded brick caused by hydro-static pressure of entrapped air is also important. Practical recommendations for optimizing the action of these factors are made. They are the control over humidity state of an initial molding mixture and the use of molding presses implementing the two-stage regime of press-molding.

E.I. SHMIT’KO, Doctor of Sciences (Engineering)
N.A. VERLINA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Voronezh State University of Architecture and Civil Engineering (84, 20-letiya Oktyabrya Street, 394006, Voronezh, Russian Federation)

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