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NUMERICAL STUDY OF THE MECHANICAL BEHAVIOR OF COMPRESSED EARTH BLOCK WALLS UNDER UNIAXIAL COMPRESSION: INFLUENCE OF SISAL FIBERS AND MORTAR COMPOSITION THROUGH FINITE ELEMENT SIMULATION
Keywords:
compressed earth blocks, sisal fibers, uniaxial compression, numerical modeling, sustainable construction, mechanical performance, natural building materialsDOI:
https://doi.org/10.17654/0973576325034Abstract
This study presents a numerical analysis of the mechanical behavior of compressed earth block (CEB) walls under uniaxial compression, focusing on the influence of sisal fiber reinforcement in the blocks and the cement content in the mortar joints. Three wall configurations are modeled using Abaqus software: one wall composed of fiber-reinforced blocks with a mortar containing 4% cement; a second wall without fibers but using the same mortar; and a third wall without fibers, combined with a more rigid mortar containing 8% cement.
The models incorporate the specific mechanical properties of the materials and the block-mortar interactions, using an elasto-plastic constitutive law coupled with progressive damage based on the concrete damaged plasticity (CDP) model. The simulations reveal that the fiber-reinforced wall achieves a maximum stress of 1.05MPa at a vertical strain of 0.19%, demonstrating a more ductile behavior. The unreinforced wall with 4% cement mortar reaches 0.92MPa at 0.16% strain, while the wall with 8% cement mortar exhibits the highest strength (1.15MPa) but fails more abruptly at a strain of 0.17%.
These results highlight the potential of combining natural fiber reinforcements with moderate mortar formulations to enhance both strength and resilience in CEB structures, supporting sustainable construction practices.
Received: June 11, 2025
Accepted: July 28, 2025
References
[1] H. Houben and H. Guillaud, Earth Construction: A Comprehensive Guide, Intermediate Technology Publications, London, 1994.
[2] A. F. Adib, S. Nasla, Y. Jamil, Y. El Maatoufi, K. Bougtaib, M. Kheltent, K. Gueraoui, G. Debenest and M. Cherraj, The effect of crushed sand from the Marrakech region of Morocco on the durability of compressed earth concrete (CEC), JP Journal of Heat and Mass Transfer 32 (2023), 83-94.
[3] P. Walker, R. Keable, J. Martin and V. Maniatidis, Rammed Earth: Design and Construction Guidelines, University of Bath, 2005.
[4] M. Kheltent, S. Nasla, Y. El Maatoufi, M. Laatar, H. Lbakhkhouch, K. Gueraoui and M. Cherraj, Experimental comparison for physical and thermal characterization of compressed earth block reinforced with fibers and block reinforced with cork aggregates, JP Journal of Heat and Mass Transfer 37(1) (2024), 111-126.
[5] S. Nasla, K. Gueraoui, M. Cherraj, Y. Jamil and K. Bougtaib, Technical studies of adobe bricks stabilize with lime from the quarry of the commune of Had Laghoualem in Morocco, International Journal on Engineering Applications 9(1) (2021), 1-7.
[6] C. Jayasinghe and N. Kamaladasa, Compressive strength characteristics of cement stabilized rammed earth walls, Construction and Building Materials 21(11) (2007), 1971-1976.
[7] Vincent Rigassi, Compressed earth blocks: manual of production, Network, GATE/BASIN, 1985.
[8] Innocent Kafodya, Moisture-induced static and cyclic properties of sisal fiber reinforced soil for resilient earthen construction, University of Johannesburg (South Africa), 2019.
[9] Y. Jamil, S. Nasla, K. Bougtaib, K. Gueraoui and M. Cherraj, The influence of compaction stress and alfa fiber content on the physico-chemical characterization of compressed earth blocks (CEB), JP Journal of Heat and Mass Transfer 24(2) (2021), 265-282.
[10] Quoc-Bao Bui et al., Compression behaviour of non-industrial materials in civil engineering by three scale experiments: the case of rammed earth, Materials and Structures 42 (2009), 1101-1116.
[11] A. Filali Adib, Y. Jamil, S. Nasla, K. Bougtaib, Y. El Maatoufi, K. Gueraoui and M. Cherraj, The physico-chemical properties of concretes based on local sands in the Marrakech-Safi region in Morocco, JP Journal of Heat and Mass Transfer 30 (2022), 33-43.
[12] Subramanian, Guru Kumar Manjappara, M. Balasubramanian and A. Arul Jeya Kumar, A review on the mechanical properties of natural fibre reinforced compressed earth blocks, Journal of Natural Fibres 19(14) (2022), 7687-7701.
[13] H. Lbakhkhouch, S. Nasla, M. Laatar, M. Kheltent, K. Gueraoui and M. Cherraj, Enhancement of mechanical and thermal qualities in compressed blocks reinforced with coconut fibers, JP Journal of Heat and Mass Transfer 37(2) (2024), 143-157.
[14] Quoc-Bao Bui et al., Seismic Assessment of Earthen Structures, Testing and Characterisation of Earth-based Building Materials and Elements: State-of-the-art Report of the RILEM TC 274-TCE, Cham, Springer International Publishing, 2021, pp. 181-210.
[15] M. Laatar, S. Nasla, Y. El Maatoufi, Y. Jamil, A. F. Adib, A. Bouchkarem and M. Cherraj, Effect of date palm fibers and lime ratio contents on thermal and mechanical properties of compressed earth blocks, JP Journal of Heat and Mass Transfer 36 (2023), 71-88.
[16] Y. El Maatoufi, S. Nasla, Y. Jamil, K. Gueraoui and M. Cherraj, Study of the effect of stabilization, by lime and sugarcane fibers, on the physico-mechanical and thermal properties of compressed earth blocks (CEB) used in the construction of a soil from El Gharb in Morocco, JP Journal of Heat and Mass Transfer 26 (2022), 61-80.
[17] K. Bougtaib, Y. Jamil, S. Nasla, K. Gueraoui and M. Cherraj, Compressed earth blocks reinforced with fibers (doum palm) and stabilized with lime: manual compaction procedure and influence of addition on mechanical properties and durability, JP Journal of Heat and Mass Transfer 26 (2022), 157-177.
[18] S. Elmaatoufi, S. Nasla, M. Kheltent, Y. E. Maatoufi, W. Gueraoui and M. Cherraj, Comparative study of compressed earth blocks reinforced with natural fibres: alfa fibres, date palm fibres and barley straw fibres, JP Journal of Heat and Mass Transfer 38(2) (2025), 285-298.
[19] A. Bouslihim, A. Bennis, S. Nasla, W. Gueraoui, H. Bouabid, M. Cherraj and S. C. D’Ouazzane, Optimizing soil particle distribution for improved compressed earth block performance: a mixing approach, JP Journal of Heat and Mass Transfer 37(6) (2024), 791-806.
[20] A. Bennis, G. A. Nouemssi, A. Bouslihim, S. Nasla, W. Gueraoui, S. C. D’Ouazzane, H. Bouabid and M. Cherraj, Improving mechanical properties of compressed earth blocks through wet granular correction, JP Journal of Heat and Mass Transfer 37(6) (2024), 843-860.
[21] A. Gueraoui and M. Brodeur, On the thermal impact on flow dynamics in a forced conduit: a combined numerical simulation and experimental measurement approach, JP Journal of Heat and Mass Transfer 37(4) (2024), 541-557.
[22] N. Zakham, I. Aberdane, K. Bouassria, N. Elhadrati, S. Nasla, Y. E. Rhaffari, M. Cherraj, H. Bouabid, A. Samaouali and W. Gueraoui, Technico-economic optimum value of the thermal behavior of the compressed earth block stabilized with mutual effect of water and cement contents, JP Journal of Heat and Mass Transfer 37(5) (2024), 641-665.
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