Review article

Distinctive features of microstructure and surface relief of plant aggregates, which determine the thermal conductivity coefficient and compressive strength of wall blocks








The article presents the results of the investigating the main properties of experimental wall blocks manufactured on the base of agricultural wastes. As an aggregate, there was used buckwheat and rye straw, as well as flax boon. It was established that the structure of the external part provides strength characteristics, and internal one provides with thermal properties. The use of flax boon and shredded buckwheat straw as an aggregate allows saving the structure of coarse aggregate, thereby increasing the coefficient of thermal conductivity. The use of a scanning-force microscope proved great differences in the surface of straw and flax boon. The average altitude difference in relief of flax boon and buckwheat straw is significantly higher than that of rye straw. The revealed factors influence on adhesion of cement rock with the aggregate.


Dolzhonok A. V. Polotsk State University

Bakatovich A. A. Polotsk State University

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