Experimental study on compressive strength and shrinkgage of soil concrete
Email:
chinhnd@utc.edu.vn
Keywords:
Eco-concrete, soil concrete, hemp fibers, clayey soil, shrinkage, compressive strength.
Abstract
In this study, soil concrete is composed of natural earth (clay, sand), cement, lime and hemp fibers. A series of 12 soil concrete mixtures were designed using different contents of clayey soil ranging from 0 to 40% and of hemp fibers ranging from 0 to 1.2% by mass. This study aims to optimize the composition of the soil concrete. The tests were carried out on the specimens in the laboratory for determing the compressive strength, shrinkage at two curing conditions (in box, in asmosphere). The results show that the compressive strength of soil concrete at 28 days is quite good (over 1 MPa) and continuously increases (2.5 MPa at 180 days). With only a small vibration during construction, this soil concrete is sufficient for filling application (wall of a frame building). The results also show that the shrinkage of the soil concrete depends strongly on the proportion of clayey soil and hemp fibers. The shrinkage of the soil concrete is much higher than that of traditional concrete because of the absence of large aggregates that limits total shrinkage. The porosity of this soil concrete is also higher than traditional concrete due to its large content of clayey soil and clay is a hydrophilic materialReferences
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[6] N. Mostefai et al., Microstructure and mechanical performance of modified hemp fibre and shiv mortars: Discovering the optimal formulation, Materials and design, 84 (2015) 359-371. https://doi.org/10.1016/j.matdes.2015.06.102
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[8] J.M. Kanema, J. Eid, S. Taibi, Shrinkage of earth concrete amended with recycled aggregates and superplasticizer: impact on mechanical properties and cracks, Materials and Design, 109 (2016) 378-389. https://doi.org/10.1016/j.matdes.2016.07.025
[9] G.H. Omidi, J. C. Thomas, K.W. Brown, Effect of drying cracking on the hydraulic conductivity of a compacted clay liner, Water, Air and Soil Pollution, 89 (1996) 91-103. https://doi.org/10.1007/BF00300424
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[13] L. Makki-Szymkiewicz et al., Evolution of the properties of lime-treated silty soil in a small experimental embankment, Engineering Geology, 191 (2015) 8-22. https://doi.org/10.1016/j.enggeo.2015.03.008
[14] F. Collet, M. Bart, L. Serres, J. Miriel, Porous structure and water vapor sorption of hemp-based materials, Construction and Building Materials, 22 (2008) 1271-1280. https://doi.org/10.1016/j.conbuildmat.2007.01.018
[15] K. Hannawi et al., Effect of different types of fibers on the microstructure and the mechanical behavior of ultra-high performance fiber-reinforced concretes, Composites Part B: Engineering, 86 (2016) 214-220. https://doi.org/10.1016/j.compositesb.2015.09.059
[16] L.S. Ho et al., Strength development of cement-treated soils: effect of water content, carbonation and pozzolanic reaction under drying curing condition, Construction and Building Materials, 134 (2017) 703-712. https://doi.org/10.1016/j.conbuildmat.2016.12.065
[2] S.M. Rao, P. Shivananda, Compressibility behavior of lime-stabilized clay, Geotechnical and Geological Engineering, 23 (2005) 309-319. https://doi.org/10.1007/s10706-004-1608-2
[3] F. Sariosseiri, B. Muhunthan, Effect of cement treatment on geotechnical properties of some Washington State soils, Engineering Geology, 104 (2009) 119-125. https://doi.org/10.1016/j.enggeo.2008.09.003
[4] P. Lura, O.M. Jensen, J. Weiss, Cracking in cement paste induced by autogenous shrinkage, Mater Struct, 42 (2009) 1089-1099. https://doi.org/10.1617/s11527-008-9445-z
[5] P. Zak et al., The influence of natural reinforcement fibers, gypsum and cement on compressive strength of earth bricks materials, Construction and Building Materials, 106 (2016) 179-188. https://doi.org/10.1016/j.conbuildmat.2015.12.031
[6] N. Mostefai et al., Microstructure and mechanical performance of modified hemp fibre and shiv mortars: Discovering the optimal formulation, Materials and design, 84 (2015) 359-371. https://doi.org/10.1016/j.matdes.2015.06.102
[7] M. Degrave-Lemeurs, P. Glé, A. Hellouin de Menibus, Acoustical properties of hemp concretes for buildings thermal insulation: Application to clay and lime binders, Construction and Building Materials, 160 (2018) 462-474. https://doi.org/10.1016/j.conbuildmat.2017.11.064
[8] J.M. Kanema, J. Eid, S. Taibi, Shrinkage of earth concrete amended with recycled aggregates and superplasticizer: impact on mechanical properties and cracks, Materials and Design, 109 (2016) 378-389. https://doi.org/10.1016/j.matdes.2016.07.025
[9] G.H. Omidi, J. C. Thomas, K.W. Brown, Effect of drying cracking on the hydraulic conductivity of a compacted clay liner, Water, Air and Soil Pollution, 89 (1996) 91-103. https://doi.org/10.1007/BF00300424
[10] K.C. Hover, Evaporation of water from concrete surface, ACI Mater J, 103 (2006) 384-389.
[11] T.T. Nguyen, Contribution à l’étude de la formulation et du procédé de fabrication d'éléments de construction en béton de chanvre, Université de Bretagne Sud (2010).
[12] S.A. Khattab, M. Al-Mukhtar, J.M. Fleureau, Long–term characteristics of a lime treated plastic soil, Journal of Materials in Civil Engineering, 19 (2007) 358-366. https://doi.org/10.1061/(ASCE)0899-1561(2007)19:4(358)
[13] L. Makki-Szymkiewicz et al., Evolution of the properties of lime-treated silty soil in a small experimental embankment, Engineering Geology, 191 (2015) 8-22. https://doi.org/10.1016/j.enggeo.2015.03.008
[14] F. Collet, M. Bart, L. Serres, J. Miriel, Porous structure and water vapor sorption of hemp-based materials, Construction and Building Materials, 22 (2008) 1271-1280. https://doi.org/10.1016/j.conbuildmat.2007.01.018
[15] K. Hannawi et al., Effect of different types of fibers on the microstructure and the mechanical behavior of ultra-high performance fiber-reinforced concretes, Composites Part B: Engineering, 86 (2016) 214-220. https://doi.org/10.1016/j.compositesb.2015.09.059
[16] L.S. Ho et al., Strength development of cement-treated soils: effect of water content, carbonation and pozzolanic reaction under drying curing condition, Construction and Building Materials, 134 (2017) 703-712. https://doi.org/10.1016/j.conbuildmat.2016.12.065
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Received
13/09/2020
Revised
21/10/2020
Accepted
22/10/2020
Published
28/10/2020
Type
Research Article
How to Cite
Ngô Đức, C. (1603818000). Experimental study on compressive strength and shrinkgage of soil concrete. Transport and Communications Science Journal, 71(8), 924-934. https://doi.org/10.47869/tcsj.71.8.4
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