The main development direction of energy efficiency technologies in construction is the creation of various materials with complex structures and unique strength, thermal properties, and other properties. The aerogel is a material with high porosity and excellent thermal insulation properties. This paper provides state-of-the-art aerogel applications for the additive manufacturing of energy-efficient buildings. This work provides the experimental and numerical assessment results of the thermal conductivity of aerogel-enhanced blanket, the experimental assessment results of thermal performance of aerogel-enhanced building structure, the experimental assessment results of the aerogel application as a mixture powder component of the concrete mixture to printing buildings, and the experimental assessment results of the aerogel application as a parget powder component. Experimental results show the effect of aerogel powder component application: thermal conductivity decreased by 25%.

The main development direction of energy efficiency technologies in construction is the creation of various materials with a complex structure and unique strength, thermal and other properties. The aerogel is a material with high porosity and excellent thermal insulation properties. This paper provides the state-of-the-art of aerogel applications for the additive manufacturing of energy efficient buildings. This work provides the experimental and numerical assessment results of thermal conductivity of aerogel-enhanced blanket, the experimental assessment results of thermal performance of aerogel-enhanced building structure, the experimental assessment results of the aerogel application as mixture powder component of the concrete mixture to printing building and the experimental assessment results of the aerogel application as parget powder component. Experimental results show the effect of aerogel powder component application: thermal conductivity decreased by 25%.

The subject of the study is the auxetic behavior of the cellular structure under compressive and tensile loads. This study experimentally assessed the auxetic properties of hourglass-shaped cellular structures. The experiments were conducted using 3D-printed polymer samples. The Poisson ratios of the structures in the compression tests were -0.06 for PLA samples and -0.05 for ABS. Two types of PLA samples with different shoulder structures were used in the tension tests. Type 1 samples had monolithic shoulders, whereas type 2 samples had cellular shoulders. The average tensile strength of the type 1 samples was 0.482 kN, whereas that of the type 2 samples was 0.416 kN, which was 13.7% lower. The elongation at failure was 35% higher in the type 2 samples (1.85 mm and 1.37 mm, respectively) than in the type 1 samples. The presence of an auxetic mesh over the entire sample contributed to the high deformation capacity of the sample. In further research, it is planned to create samples of fine-grained concrete with cellular structure.