Actual Problems in Machine Building. Vol. 10. N 3-4. 2023 Materials Science in Machine Building ____________________________________________________________________ 56 3. Compressive load-dominated concrete structures for customized 3D-printing fabrication / A. Lin, A. Goel, D.H.A. Wong, C. Yeo, J. Chung et al. // Automation in Construction. – 2022. – Vol. 141. – Art. 104467. – DOI: 10.1016/j.autcon.2022.104467. 4. Influence of phase change material on concrete behavior for construction 3D printing / Q. Shahzad, J. Shen, R. Naseem, Y. Yao, S. Waqar, W. Liu // Construction and Building Materials. – 2021. – Vol. 309. – Art. 125121. – DOI: 10.1016/j.conbuildmat.2021.125121. 5. Wang L., Aslani F. Structural performance of reinforced concrete beams with 3D printed cement-based sensor embedded and self-sensing cementitious composites // Engineering Structures. – 2023. – Vol. 275. – Art. 115266. – DOI: 10.1016/j.engstruct.2022.115266. 6. Wang L., Aslani F., Mukherjee A. Development of 3D printable self-sensing cementitious composites // Construction and Building Materials. – 2022. – Vol. 337. – Art. 127601. – DOI: 10.1016/j.conbuildmat.2022.127601. 7. Shchegolkov A.V., Shchegolkov A.V. Synthesis of carbon nanotubes using microwave radiation: technology, properties, and structure // Russian Journal of General Chemistry. – 2022. – Vol. 92. – P. 1168–1172. – DOI: 10.1134/S1070363222060329. STRUCTURAL AND THERMOPHYSICAL PROPERTIES OF MWCNT MODIFIED COMPOSITE MATERIALS FOR CONSTRUCTION 3D PRINTERS Zemtsova N.V., Ph.D. student, e-mail: natasha_paramonova_68@mail.ru Shchegolkov A.V., Ph.D. (Engineering), Associate Professor, e-mail: energynano@yandex.ru Tair Rahim A.A., Ph.D. student, e-mail: ali.eng9295@gmail.com Tambov State Technical University, 106/5, Building 2, Sovetskaya Str., Tambov, Russian Federation Abstract The paper deals with the application and production of new types of materials for 3D printers used in construction. The use of new materials and technological techniques associated with additive technologies makes it possible to obtain previously inaccessible building structures with controlled structural properties and obtained at minimal material costs with effective strength and thermal insulation characteristics. In this regard, the thermal insulation efficiency of the obtained materials while maintaining high strength properties and curing rate is also important. Studies of the thermal conductivity of the obtained materials for 3D printers, as well as its analysis in comparison with the classical concrete and foamed concrete are carried out. Keywords 3D printer, cement, thermal conductivity, carbon nanotubes.
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