Study of the Processes of Structure Formation of Composite Cement Stone For Soil Strengthening Name

In road construction, one of the progressive design solutions that increase the durability of road objects is the strengthening of soils for both various structural layers of the pavement and the underlying layer – the roadbed. Priority materials for soil strengthening are binding materials based on Portland cement in combination with additives – stabilizers. Among the variety of stabilizers, additives containing polymers in their composition are of interest, allowing not only to improve the water-physical properties of soil systems, but also to positively affect the strength of the final material. One of these additives is a polymer-mineral additive. This work is devoted to the study of the effect of additives on the structure formation of cement stone. The physicomechanical properties of composite cement were evaluated depending on the method of introduction of the additive and the time of its preparation. The features of the formation of the cement stone structure when using a polymer-mineral additive in the composition of a composite binder are studied. Based on the conducted studies, the mechanism of influence of the additive used has been established, consisting in the involvement of the main components of the polymer-mineral additive (wollastonite, amorphous silica) in the processes of hydration and hardening of the binder due to joint milling. This makes it possible to significantly improve the physical and mechanical characteristics.

S.N. BONDARENKO, senior lecturer (This email address is being protected from spambots. You need JavaScript enabled to view it. ),
I.Yu. MARKOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
E.A. YAKOVLEV (This email address is being protected from spambots. You need JavaScript enabled to view it. ), Candidate of Sciences (Engineering),
M.S. LEBEDEV (This email address is being protected from spambots. You need JavaScript enabled to view it.) Candidate of Sciences (Engineering),
D.Yu. POTAPOV, Student

Belgorod State Technological University named after V.G. Shukhov (46, Kostyukov Street, Belgorod, 308012, Russian Federation)

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