Study of the Superabsorbent Polymer Additive Effectiveness to Reduce the Autogenous Shrinkage of Concrete without Reducing its Strength

The results of experimental studies of the effect of different types of additives of superabsorbent polymers (SAP) on the strength of various types of concrete carried out by both domestic and foreign authors are analyzed. The purpose of research was to study the effectiveness of using a new type of additive to activate the processes of self-healing of cracks in concrete structures without losing hardened concrete. As a result of field experiments, the optimal dosage of the used additive was revealed. It is shown that the strength of concrete remains unchanged if the dosage of the superabsorbent additive (SAP) is equal to 0.5% of the cement weight or less. The results of a study of the properties of fine-grained and heavy concrete modified with a superabsorbent polymer additive are presented. The possibility of using modern intelligent technologies (artificial neural networks) to predict the properties of concrete mixture and finished concrete (cone spreading, bending and compressive strength) at given values of input parameters (dosages of SAP and I/C), on the characteristics of concrete is shown. This opens up the prospects of using a neural network to create materials with predefined properties.

K.B. SHARAFUTDINOV¹, Engineer,
K.A. SARAYKINA¹, Candidate of Sciences (Engineering);
G.G. KASHEVAROVA^1,2, Doctor of Sciences (Engineering), Professor, Сorresponding member of RAACS;
V.T. EROFEEV^2,3, Doctor of Sciences (Engineering), Academician of RAACS

¹ Perm National Research Polytechnic University (29, Komsomolsky Prospect, Perm, 614990, Russian Federation)
² Research Institute of Building Physics, Russian Academy of Architecture and Construction Sciences (21, Lokomotivniy Driveway, Moscow, 127238, Russian Federation)
³ National Research N.P. Ogarev Mordovia State University (68, Bolshevistskaya Street, Saransk, 30005, Russian Federation)

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