Multilayer Insulation Technology in Additive Manufacturing in Construction

The relevance is determined by the need to enhance the energy efficiency and environmental safety in construction through the implementation of 3D printing. Given the necessity for the disposal of plant waste, the use of hemp scutch as alternative thermal insulation for filling a dead formwork becomes particularly significant, aligning with modern trends in green construction.

Purpose: The aim of this work is to investigate the feasibility of using hemp scutch as an organic filler. The heat transfer was analyzed under the boundary conditions, i.e., ambient temperature on the outer (–30 °C) and inner (20 °C) surfaces.

Research findings: The numerical analysis at a temperature change rate of 4 °C/hour within –25 to –5 °C shows a high inertia of the wall element. The numerical analysis is conducted for temperature strain and stress in the hemp scutch wall element with a sand-cement mixture shell under extreme temperatures. It is based on the maximum-strain of failure and Mohr–Coulomb theories for zones with maximum stress levels and shows that the lowest safety margins (1.14–2.7) provide the required reliability of the wall element for this temperature differential across the outer and inner surfaces. The lowest safety margins (1.23–2.5) for zones with maximum thermal stress levels provide the required reliability at transient temperatures.

Originality/value: The hempcrete potential is show for using it as a thermal insulation material in 3D printing, contributing to reduced energy consumption of buildings and expanding the use of renewable plant materials in the construction industry. The numerical analysis of the thermal state of the wall element obtained by 3D printing, where a dead formwork made of sandcement mixture is filled with hempcrete.

1. Mustafin, N.S., Baryshnikov, A.A. The Latest Technologies in Construction. 3D printer. Regional'noe razvitie. 2015; (8): 13. EDN: VLJYDB (In Russian)

2. Simakova, E.A., Selyakova, K.I., Kravchenko, D. 3D Printing in Construction. Inzhenernye issledovaniya. 2021; 1(1): 3–11. EDN: QZZTUT (In Russian)

3. Inozemtsev, A.S., Korolev, E.V., Zuong Thanh, Kui. Analysis of 3D Printing Techniques in Construction. Vestnik MGSU. 2018; 13(7 (118)): 863–876. DOI: 10.22227/19970935.2018.7.863-876 (In Russian)

4. Grakhov, V.P., Mokhnachev, S.A., Borozdov, O.V. Influence of 3D Printing Techniques on Construction Economy. Fundamental'nye issledovaniya. 2014; (11–12): 2673–2676. (In Russian)

5. Labonnote, N., et al. Additive Construction: State-of-the-art, Challenges and Opportunities. Automation in Construction, 2016. http://dx.doi.org/10.1016/j.autcon.2016.08.026

6. Mazur, K.E., Wardal, W.J., Barwicki, J., Tseyko, M. Thermal Insulation of Agricultural Buildings using Different Biomass Materials. Energies 2025; 18, 636. https://doi.org/10.3390/en18030636

7. Bondarev, B.A., Bayazov, V.A., Korneev, O.O., Vostrikov, I.A., Meshcheryakov, A.A., Korneeva, A.O. Mixtures for 3D Printing. Vestnik Evraziiskoi nauki. 2021; 13(3). DOI: 10.15862/29SAVN321. EDN: HCYDCG (In Russian)

8. Tolstova, Yu.I. Fundamentals of Building Thermophysics. Yekaterinburg, 2014. 106 p. ISBN 978-5-7996-1131-6. (In Russian)

9. Bardouh R., Toussaint, E., Amziane, S., Sandrine Marceau. Evaluating the Mechanical Performance of Bio-Based Concrete: The Role of Aggregate Type and Orientation in Compression Cyclic Loading. Cleaner Engineering and Technology. 2026; 30: 101–139. DOI: 10.1016/j.clet.2025.101139

10. Barnat-Hunek, D., Smarzewski, P., Brzyski, P. Properties of Hemp–Flax Composites for use in the Building Industry. Journal of Natural Fibers. 2017; 14(3): 410–425. https://doi.org/10.1080/ 5440478.2016.1212764

11. Leclerc, W., Moudhaffar, N., Nguyen, DM., Promis, G., Perré, P., Tran Le, A.D. Determination of the Thermophysical Properties of Hempshives using a Methodology Combining X-ray Nanotomography and FFT-based Numerical Simulation. International Journal of Heat and Mass Transfer. 2025; 251: 127–331 https://doi.org/10.1016/j.ijheatmasstransfer.2025.127331

12. Król, A., Janowska-Renkas, E., Klementowski, I., et al. Thermal Insulation Properties of Ecological Hemp Concrete Modified with Fly Ash from the Energy Sector. Clean Techn Environment Policy. 2025; 27: 8225–8233, https://doi.org/10.1007/s10098-025-03225-6

13. Osman, Gencel, Onur, Güler, Abid, Ustaoğlu, Ertuğrul, Erdoğmuş, Ahmet, Sarı, Gökhan, Hekimoğlu, Yalçın, Boztoprak, Serkan, Subaşı. Characteristics of Cement-Based Thermo-Concretes Containing Capric Acid Impregnated Hemp for Thermal Energy Storage and Sound Isolation in Buildings. Energy. 2025; 329: 136837, https://doi.org/10.1016/j.energy.2025.136837

14. Nanazashvili, I.H. Building Materials Made of Wood-Cement Composition. 2nd edn. Moscow: Stroyizdat, 1990. 415 p. (In Russian)

15. Pilipenko, N.V. Heat Losses and Energy Efficiency of Buildings. Saint-Petersburg. 2016. 54 p. (In Russian)

16. Bodrov, V.I., Bodrov, M.V., Bodrova, V.F., Kuzin, V.Yu. Construction Thermophysics. Nizhny Novgorod, 2015. 156 p. ISBN 978-5-528-00064-0. (In Russian)

17. Bukhmirov, V.V., Rakutina, D.V., Solnyshkova, Yu.S. Reference Materials for Solving Problems in the Course "Heat and mass transfer". Ivanovo, 2009. 102 p. (in Russian)

18. Leonovich, S.N. (Ed.), Litvinovsky, D.A., Chernyakevich, O.Yu., Stepanova, A.V. Strength, Crack Resistance and Durability of Structural Concrete under Temperature and Corrosion Influences. Minsk, 2016. 393 p. ISBN 978-985-550-776-6 (Part 1). (In Russian)

19. Shcherban, E.M., Stelmakh, S.A., Vanyan, S.S., Evsyukov, K.K., Zaretsky, A.V., Korzhaeva, E.E. Stress-Strain Characteristics of Conventional and Modified Centrifuged Concrete during Cyclic Freezing and Thawing. Vestnik Evraziiskoi nauki. 2019; (6). Available: https://esj.today/PDF/62SAVN619.pdf (accessed November 20, 2025). (In Russian)