Analysis of thermally treated “plastic-pozzolanic” modified mortars and their mechanical properties
DOI:
https://doi.org/10.62638/ZasMat1595Abstract
The recycling of plastic waste in construction materials offers a potential pathway toward sustainability while improving thermal performance. This study examines mortars in which natural sand is partially replaced by thermally treated PET waste by a natural source (pozzolan). Three phases were conducted: (i) experimental determination of compressive strength, Young’s modulus, and thermal conductivity at different LCA replacement levels; (ii) homogenization analysis to estimate equivalent elastic and thermal parameters, compared with literature data; and (iii) numerical simulations of heat transfer through simply supported beams with 2 cm and 4 cm coatings. The results indicate that thermally treated PET incorporation reduces compressive strength relative to the control mortar, though values remain sufficient for non-structural applications such as finishing mortars (e.g., 22 MPa at 100% substitution). In contrast, thermal performance improved significantly, with conductivity decreasing from 1.5 to 0.71 W/m·K, leading to enhanced resistance to heat transfer. These findings demonstrate the potential of thermally treated PET-modified mortars as eco-efficient materials that combine adequate mechanical capacity with excellent thermal comfort.
Keywords:
plastic waste, mortar, thermomechanical properties, the deflection, heat transferReferences
I. S. Umo, A. I. Enwereuzor (2021) “The Implications of Area Morphology and Particulate Matters’ Distributions on the Kwa Iboe River Basin Restoration, Southeastern Nigeria,” J. Water Resour. Ocean Sci., 10(3), 53–60. https://doi.org/10.11648/j.wros.20211003.13
I. S. Umo, P. E. Okoroafor, I. G. Ukwe (2021) Climate variability and the issues in flood disaster risk awareness in Nigerian communities” NIPES-Journal of Science and Technology Research, 3(4), https://doi.org/10.37933/nipes/3.4.2021.27
Z. R. Harrat, S. Amziane, B. Krour, M. B. Bouiadjra (2021) “On the static behavior of nano SiO2 based concrete beams resting on an elastic foundation,” Comput. Concrete, 27(6). 575-583. https://doi.org/10.12989/cac.2021.27.6.575
M. Chatbi, B. Krour, M.A. Benatta, Z.R. Harrat, S. Amziane, M. B. Bouiadjra (2022) “Bending analysis of nano-SiO2 reinforced concrete slabs resting on elastic foundation,” Struct. Eng. Mech., 84(5), 685–697. https://doi.org/10.12989/sem.2022.84.5.685
A. Benfrid, A. Benbakhti, Z. R. Harrat, M. Chatbi, B. Krour, M. B. Bouiadjra (2023) “Thermomechanical analysis of glass powder based eco-concrete panels: Limita¬tions and performance evaluation,” Period. Polytech. Civ. Eng., 67(4) 1284–1297, 2023. https://doi.org/10.3311/PPci.22781
S. D. Elhennani, Z. R. Harrat, M. Chatbi, A. Belbachir, B. Krour, E. Işık, E. Harirchian, M. Bouremana, M. B. Bouiadjra (2023) “Buckling and Free Vibration Analyses of Various Nanoparticle Reinforced Concrete Beams Resting on Multi-Parameter Elastic Foundations,” Materials, 16(17) 5865. https://doi.org/10.3390/ma16175865
A. Kecir, M. Chatbi, Z. R. Harrat, M. B. Bouiadjra, M. Bouremana, B. Krour (2024) Enhancing the mechanical performance of concrete slabs through the incorporation of nano-sized iron oxide particles (Fe2O3): non-local bending analysis, Period. Polytech. Civ. Eng., 68(3) 842–858. https://doi.org/10.3311/PPci.23016
M. Chatbi, Z. R. Harrat, M. A. Benatta, B. Krour, M. Hadzima Nyarko, E. Işık, S. Czarnecki, M. B. Bouiadjra (2023) “Nano-clay platelet integration for enhanced bending performance of concrete beams resting on elastic foundation: an analytical investigation,” Materials, 16(14) 5040. https://doi.org/10.3390/ma16145040
Z. R. Harrat, M. Chatbi, B. Krour, M. Hadzima Nyarko, D. Radu, S. Amziane, M. B. Bouiadjra (2023) “Modeling the Thermoelastic Bending of Ferric Oxide (Fe2O3) Nanoparticles-Enhanced RC Slabs,” Materials, 16(8) 3043. https://doi.org/10.3390/ma16083043
A. Benfrid, M. B. Bouiadjra (2025) “A new approach for studying plaster beam bending based on DISS Algerian (nano-short-bio-fibres),” Modern J. Health Appl. Sci., 2(1) 43–58.
https://doi.org/10.70411/MJHAS.2.1.2025183
N. Latroch, A. S. Benosman, N. E. Bouhamou, Y. Senhadji, M. Mouli (2018) “Physico-mechanical and thermal properties of composite mortars containing lightweight aggregates of expanded polyvinyl chloride,” Constr. Build. Mater., 175, 77–87. https://doi.org/10.1016/j.conbuildmat.2018.04.173
A.S. Benosman, M. Mouli, H. Taibi, M. Belbachir, Y. Senhadji, I. Behlouli, D. Houivet (2012) “Mineralogical study of polymer-mortar composites with PET polymer by means of spectroscopic analyses,” Mater. Sci. Appl. 3(3) 139-150. https://doi.org/10.4236/msa.2012.33022
A. S. Benosman, M. Mouli, H. Taibi, M. Belbachir, Y. Senhadji, I. Bahlouli, D. Houivet (2013) “Studies on chemical resistance of PET-mortar composites: microstructure and phase composition changes,” Engineering, 5(4) 359–378. https://doi.org/10.4236/eng.2013.54049
B. Haba, S. Djellali, Y. Abdelouahed, S. Boudjelida, F. Faleschini, M. Carraro, (2025) “Transforming plastic waste into value: A review of management strategies and innovative applications in sustainable construction,” Polymers, 17(7), 881. https://doi.org/10.3390/polym17070881
M. Barka, O. Taleb, A. K. Tedjditi, H. Soualhi, A. S. Benosman, and M. Mouli (2025) “New insights on rheology, durability and mechanical and thermal properties of polyester and steel fiber-reinforced self-compacting concretes,” Eur. J. Environ. Civ. Eng., 29(8) 1467–1490. https://doi.org/10.1080/19648189.2024.2441970
L. Turpin, O. Caty, S. Roux, S. Denneulin, E. Martin (2019) “Conception d’un essai multiaxial in situ pour caractériser le comportement thermomécanique de pièces en CMC.” 21ème Journées Nationales sur les Composites, École Nationale Supérieure d’Arts et Métiers (ENSAM) - Bordeaux, Talence, France, Jul 2019. hal-02421571
M. Hacini, A.S. Benosman, N. Kazi Tani, M. Mouli, Y. Senhadji, A. Badache, N. Latroch (2021) “Utilization and assessment of recycled polyethylene terephthalate strapping bands as lightweight aggregates in Eco-efficient composite mortars”. Constr. Build. Mater., 121427. https://doi.org/10.1016/j.conbuildmat.2020.121427
A. Badache, A. S. Benosman, Y. Senhadji, and M. Mouli (2018) “Thermo-physical and mechanical characteristics of sand-based lightweight composite mortars with recycled high-density polyethylene (HDPE),” Constr. Build. Mater., 163, 40–52. https://doi.org/10.1016/j.conbuildmat.2017.12.069
F. B. Houti, H. Hachemi, A. S. Benosman, O. Taleb, C. Seladji, M. Mouli, I. F. Z. Mesli, A. Badache, M. Arıcı (2025) “Assessment of hygrothermal performance in plaster mortar composites incorporating polyvinyl chloride waste aggregates,” J. Build. Pathol. Rehabil., 10(2), 1–20, 2025. https://doi.org/10.1007/s41024-025-00599-4
M. N. Omar, M. M. Minggu, N. A. N. Muhammad, P. M. Abdul, Y. Zhang, A. B. Ramzi (2024) Towards consolidated bioprocessing of biomass and plastic substrates for semi-synthetic production of bio-poly (ethylene furanoate) (PEF) polymer using omics-guided construction of artificial microbial consortia, Enzyme Microb. Technol., 177, 110429. https://doi.org/10.1016/j.enzmictec.2024.110429
M. T. Gouasmi, A. S. Benosman, H. Taïbi (2017) “Development of Materials Based on PET-Siliceous Sand Composite Aggregates,” J. Build. Mater. Struct., 4(2), 58–67. https://doi.org/10.34118/jbms.v4i2.32
M. T. Gouasmi, A. S. Benosman, H. Taïbi (2019) “Improving the Properties of Waste Plastic Lightweight Aggregates-based Composite Mortars in An Experimental Saline Environment,” Asian J. Civ. Eng., 20(1), 71–85. https://doi.org/10.1007/s42107-018-0089-1
M. T. Gouasmi, A. S. Benosman, H. Taïbi, N. Kazi Tani, M. Belbachir (2017) “Destructive and Non-Destructive Testing of an Industrial Screed Mortar Made with Lightweight Composite Aggregates WPLA,” Int. J. Eng. Res. Africa, 33, 140–158. https://doi.org/10.4028/www.scientific.net/JERA.33.140
N. Kazi Tani, A. S. Benosman, H. Taïbi, M. Mouli (2017) “Mechanical strengths of modified PET mortar composites in aggressive MgSO4 medium: ACI & BS predictions,” J. Build. Mater. Struct., vol. 4(2) 76–83. https://doi.org/10.34118/jbms.v4i2.34
A. S. Benosman, M. Mouli, H. Taïbi, M. Belbachir, Y. Senhadji, I. Bahlouli, D. Houivet (2017) “The Chemical, Mechanical and Thermal Properties of PET-Mortar Composites Containing Waste PET,” Environ. Eng. Manag. J., 16(7) 1489–1505. https://doi.org/10.30638/eemj.2017.162
C.C. Ike (2024) “Ritz variational method for buckling analysis of Euler-Bernoulli beams resting on two-parameter foundations,” Iraqi J. Civ. Eng., 18(1) 26–49. https://doi.org/10.37650/ijce.2024.180103
C.C. Ike (2022) “Fourier series method for finding displacements and stress fields in hyperbolic shear deformable thick beams subjected to distributed transverse loads,” J. Comput. Appl. Mech., 53(1) 126–141. https://doi.org/10.22059/JCAMECH.2022.332719.658
C.C. Ike, (2025) “Ritz variational method for the free harmonic vibration solutions of slender beams on two-parameter elastic foundations,” Nigerian Journal of Technology, 44(2), 193–201. https://doi.org/10.4314/njt.v44i2.3
E. Işık (2023) “Structural failures of adobe buildings during the February Kahramanmaraş (Türkiye) earthquakes,” Appl. Sci., 13(15) 8937. https://doi.org/10.3390/app13158937
E. Işık, F. Avcil, A. Büyüksaraç, E. Arkan, E. Harirchian (2025) “Impact of Local Soil Conditions on the Seismic Performance of Reinforced Concrete Structures: In the Context of the 2023 Kahramanmaraş Earthquakes,” Appl. Sci., 15(5) 2389. https://doi.org/10.3390/app15052389
F. Turan (2025) “Nonlinear bending, buckling and post-buckling of higher-order shear deformable porous beams subjected to axially varying compressions and linearly varying transverse loadings,” Thin-Walled Struct., p. 113853. https://doi.org/10.1016/j.tws.2025.113853
M. F. Turan, Ç. Arpali, Y. Baykal, (2025) “Arbitrary beam propagation in an underwater turbulent medium,” J. Opt. Soc. Am. A, 42(5) 633–640. https://doi.org/10.1364/JOSAA.558868
A. Benfrid, M. Chatbi, Z. R. Harrat, M. B. Bouiadjra (2025) “Selective Integration of Waste-Derived Glass Nanopowders in Structural Wall Concrete: Improving Thermal Efficiency and Elasto-Mechanical Properties for Sustainable Construction,” Period. Polytech. Civ. Eng., 69(3) 954–965. https://doi.org/10.3311/PPci.39913
C. C. Kwasi Effah, O. Okpako, C. P. Okoh, O. O. Micheal, K. Okoro Obaraye (2025) “Techno-economic feasibility assessment of parabolic trough solar collector in concentrated solar power plants using various heat transfer fluids,” Next Research, 2(2) 100301. https://doi.org/10.1016/j.nexres.2025.100301
C. C. Kwasi-Effah, O. Okpako (2025) “Comprehensive Review of Emerging Trends in Thermal Energy Storage Mechanisms, Materials and Applications,” Front. Energy Res., 13, 1651471. https://doi.org/10.3389/fenrg.2025.1651471
EN 196-1 (2005), Methods of testing cement – Part 1: Determination of strength, European Committee for Standardization (CEN), Brussels, Belgium. European Committee for Standardization, CEN.
ISO 8302 (1991), Thermal insulation – Determination of steady-state thermal resistance and related properties – Guarded hot plate apparatus, International Organization for Standardization (ISO), Geneva, Switzerland.
R. Zouaoui, K. Miled, O. Limam, A. Beddey (2015) “Prédiction des propriétés élastiques du béton par un modèle micromécanique discret,”. Deuxième édition des Journées Nationales du Béton JNB’15At : Hammamet, Tunisia.
H. Hatta, M. Taya (1985) “Effective thermal conductivity of a misoriented short fiber composite,” J. Appl. Phys., 58(7) 2478–2486. https://doi.org/10.1063/1.335924
E. T. Swartz, R. O. Pohl (1989) “Thermal boundary resistance,” Rev. Mod. Phys., 61(3) 605. https://doi.org/10.1103/RevModPhys.61.605
