A mathematical model for predicting complete compressive stress-strain curve of plain and short fiber reinforced clay adobes

Document Type : Research Article

Authors

1 Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran

2 Department of Civil Engineering, Pontificia Universidade Catolica do Rio de Janeiro, Brazil

Abstract

 Following the principles of low-cost, energy-saving, low polluting, and sufficient thermal, humidity and acoustic insulation of soil blocks as a construction material, there is an increasing interest to study clay adobe elements. This study presents a mathematical model for predicting the relationship between uniaxial compressive stress and corresponding strain which can be useful for simulating the structural behavior of plain and short fiber reinforced adobes with concrete damage plasticity model in ABAQUS.  In this direction, the compressive properties of four different plain and short fiber reinforced adobes weremeasured in experimental tests. From the obtained results, the essential parameters of the stress-strain curves for all various mix design specimens were extracted for numerical modeling.  By a statistical study on the various results of compressive tests as available in the related literature, the proposed equations were developed for predicting the necessary parameters when the only needed experimentally determined parameter is the peak compressive stress. The suggested model is compatible with the behavior of different adobes with different compositions, compacting, curing, and testing condition. The recommended model and formulations are to some extent more successful in predicting the linear and nonlinear behavior of different adobes according to other models.Finally, a mathematical model is developed for predicting the inelastic range of the compressive stress-strain curve.

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References

[1] D. Silveira, H. Varum, A. Costa. Influence of the testing procedures in the mechanichal characterization of adobe bricks. Construction and Building Materials, vol. 40. Pp. 719- 728. 2013.       
[2] M.S. Islam, K. Iwashita. Earthquake resistance of adobe reinforced by low cost traditional materials. Journal of Natural Disaster Science, vol. 32, no.1, pp.1-21. 2010.
[3] F. Fratini, E. Pecchioni, L. Roverto, U. Tonietti. The earth in the aechitecture of the historical center of Lamezia Temrme (Italy): Characterization for restoration., Applied Clay Science, vol. 53, no. 3, pp. 509-516. 2011.
[4] N. Augenti, F. Parisi. Constitutive models for tuff masonry under uniaxial compression. Journal of Materials in Civil Engineering, vol. 22, no. 11, pp. 1102-1111. 2010.
[5] E. Adorni, E. Coisson, D. Ferretti. In situ characterization of archaeological adobe bricks.  Construction and Building Materials, vol. 40, pp. 1-9. 2013.
[6] Zdenek P. Bazant. Concrete fracture models: testing and practice. Engineering Fracture Mechanics 69, 165-205. 2002.
[7] S.S. Ali, A.W. Page. Finite element model for masonry subjected to concentrated Loads. Journal of Structural Engineering, vol. 114. 1987.
[8] S.K. Arya, G.A. Hegemier. On nonlinear response prediction of concrete masonry assemblies. North American Masonry Conference, Boulder, Colorado, USA, pp.19.1-19.24. 1987.
[9] H.R. Lotfi, Shing. Interface model applied to fracture of masonry structures. ASCE, Vol.120, No.1, pp.63-80. 1994.
[10] Domingo, J. Carreira, Kuang-Han Chu. Stress-strain relationship for plain concrete in compression. ACI Journal. 1985.
[11] R. Illampas, Experimental and computational investigation of the structural response of adobe structures, Phd thesis, university of Cyprus, 2013.
[12] ASTM D 2487-98. “Standard practice for classification of soils for engineering purposes (unified soil classification system)”. West Conshohocken: ASTM International; 2017.
[13] ASTM D 4318- 98. “Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils’. West Conshohocken: ASTM International; 2017.
[14] M. Abbaspour, F. Moghadas Nejad. Reuse of waste tire textile fibers as soil reinforcement. Journal of Cleaner Production, pp. 1059,1071
[15] CEN- “Eurocode 6: Design of masonry structures”. ENV 1996-1-1:1995, CEN, Brussels, Belgium, 1995. 
[16] E.E.Gdoutos, Fracture Mechanics an Introduction, second edition, Springer, 2005.
[17] EN 1998. “Eurocode 8: Design of structures for earthquake resistance”. Brussels; 2004 (Part 1) and 2005 (Part3).
[18] F. Faghihkhorasani, M.Z. Kabir, K.Ghavami, M. Ahmadi. Predicting of compressive stress-strain curves of structural adobe cubes Based on Acoustic Emission (AE) Hits and Weibull Distribution. International Journal of structural integriyu. 2019.
[19] Mark F. Carlos. Acoustic Emission: Heeding the Warning Sounds from Materials.  https://www.astm.org/SNEWS/OCTOBER_2003/carlos_oct03.html.
[20] Jun Zhou, A study of acoustic emission technique for concrete damage detection, Maser thesis, Michigan Technological University, 2011
[21] ASTM C469/C469M–10 Standard test method for static modulus of elasticity and Poisson’s ratio of concrete in compression. West Conshohocken: ASTM International; 2010.
[22] F.Frantini, E.Pecchioni,L.Rovero,U.Tonietti. The earth in the architecture of the historical centre of Lamezia Terme (Italy): Characterization for restoration. Applied Clay Science,issue 3, Elsevier, 2011.
[23] J. Lubliner, J. Oliver, S. Oller, E. Onate. A Plastic-damage model for concrete. International Journal of Solid and Structures, vol. 25, no.3, pp. 299-326. 1989.
[24] J. Lee, G. Fenves. Plastic- damage model for cyclic loading of concrete structures. Journal of Engineering Mechanics, vol. 124. No. 8, pp. 892-900. 1988. 
[25] B.L. Wahlathantri, et.al, A material model for flextural crack simulation in reinforced concrete element using ABAQUS, First International Conference on Engineering, Designing and Developing the Built Environment for Sustainable Wellbeing, Queensland University of Technology, Queensland University of Technology, Brisbane, Qld, pp. 260-264.
[26] F. Faghihkhorasani, M.Z. Kabir ,M.A. Rastaak, Tensile characterization of composite adobe specimens reinforced with short fibers, an experimental study, 2018, The Biennial International Conference on Experimental Solid Mechanics,Tehran.
[27] F.Parisi, D.Asprone, L.Fenu, A.Prota. Experimental characterization of Italian composite adobe bricks reinforced with straw fibers. Composite Structure 122, 300-307, 2015.
[28] E.Quagliarini, S.Lenci. The influence of natural stabilizers and natural fibres on the mechanical properties of ancient Roman adobe bricks. Journal of Cultural Heritage 11, 309-314, 2010.
[29] R.Illampas, I.Ioannou, D.C.Charmpis. Adobe bricks under compression: Experimental investigation and derivation of stress–strain equation. Journal of Construction and Building Materials 53, 83-90, 2014.
AUT Journal of Civil Engineering
Volume 5, Issue 1
March 2021
Pages 37-68

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