A systematic testing procedure of auxetic cementitious composites for modular and reinforced construction. A review

Строительные конструкции, здания и сооружения
Авторы:
Velikii, Iaroslav AndreevichNemova (Sergeeva), Darya Viktorovna
Аннотация:

The object of the research is the method for improving the mechanical characteristics of auxetic cementitious composites (ACC). ACC offer higher strength and greater resistance to deformation and cracking compared with conventional construction materials. This work aims to analyze existing improvement methods, evaluate their limitations, and propose a method for enhancing ACC that accounts for the joint contribution of the lattice and the matrix. Method. A systematic literature review with content analysis was employed, incorporating gap analysis of existing improvement workflows and within-study comparative ranking of experimental results across 20 peer-reviewed publications. Results. This study examines methods for improving auxetic structures and cement paste. 20 research papers were analyzed to assess the influence of the type of auxetic lattice structure, the material used to print the lattice, and the lattice geometry on the physical and mechanical properties of ACC. The study proposed a method to enhance the physical and mechanical properties of auxetic cementitious composites. Experimental analysis showed that reentrant and peanut-shaped structures perform better in compressive and tensile strength, while the octet structure stands out for its high energy absorption capacity. The developed research and improved workflow include selecting target properties, numerical simulation, selecting an improvement method, and conducting experiments. Progress in ACC research remains limited by inappropriate control-specimen selection, too few replicate tests (typically three per series), and fragmented data on geometric effects; standardizing test protocols and increasing replicate specimens to five-ten per series is recommended to improve result reliability.

Ключевые слова:
AuxeticMetamaterialsAuxetic cementitious compositeAuxetic optimizationMethod of optimizationMetamaterials optimizationModular constructionModular buildings
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