Bentonite Composite and Fibre

Abstract:

Composite soils have been widely used in civil engineering applications, especially in slopes, embankment dam and landfills. This paper aims to investigate effect of fiber inclusion on compaction characteristic of composite soil (i.e. clay composite). A series of laboratory tests carried out to evaluate fiber effect on optimum water content and maximum dry unit weight of composite soils. Clay was selected as soil part of the composite and natural fiber was used as reinforcement. The fiber parameters differed from one test to another, as fiber length varied from 10 mm to 20mm and fiber content were selected as 0.1% and 0.25%. For each test, compaction curved derived and the results were compared. The results proved that inclusion of fiber affected compaction behaviour of samples so that increasing in fiber content and length caused increasing in Optimum Moisture Content (OMC) and slightly decreased maximum dry unit weight.

• Periodical: Advanced Materials Research (Volumes 652-654)
• Pages: 38-42
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.652-654.38
• Online since: January 2013
• Authors: Amin Chegenizadeh, Hamid Nikraz
• Keywords: Compaction, Composite, Fiber, Soil

References

[1] AlWahab, R.M. and Al Quirma, H.H. (1995) Fiber Reinforced Cohesive Soils for Application in Compacted Earth Structures, Proceedings of Geosynthetics '95, IFAI, Vol. 2, Nashville, Tennessee, USA, March 1995, pp.433-476.

[2] Al Wahab, R. M., and El-Kedrah, M. A. (1995) Using fibers to reduce tension cracks and shrink/swell in compacted clay, Proc. Geoenvironment 2000, ASCE, New Orleans, 791–805.

[3] Fletcher, C.S. and Humphries, W.K. (1991) California Bearing Ratio Improvement of Remoulded Soils by the Addition of Polypropylene Fiber Reinforcement, Transportation Research Record 1295, Washington, DC, USA, pp.80-86.

[4] Gray, D.H. and Ohashi, H. (1983) Mechanics of Fiber Reinforcement in Sand, Journalof Geotechnical Engineering, Vol. 109, No. 3, pp.335-353.

DOI: 10.1061/(asce)0733-9410(1983)109:3(335)

[5] Kumar, Kanaujia and Chandrad (1983) Fiber-Reinforced Pond Ash and Silty Sand, Geosynthetic international S 1999, VOL. 6, NO. 6.

[6] Maher, M.H. and Gray, D.H. (1990) Static Response of Sands Reinforced with Randomly Distributed Fibers, Journal of Geotechnical Engineering, Vol. 116, No. 11 pp.1661-1667.

DOI: 10.1061/(asce)0733-9410(1990)116:11(1661)

[7] Maher, M.H. and Ho, Y.C. (1964) Mechanical Properties of Bentoniteite/Fiber Soil Composite, Journal of Geotechnical Engineering, Vol. 120, No. 8, p.1981-(1993).

[8] Nataraj, M.S. and McManis, K.L. (1997) Strength and Deformation Properties of Soils Reinforced with Fibrillated Fibers, Geosynthetics International, Vol. 4, No. 1, pp.65-79.

DOI: 10.1680/gein.4.0089

[9] Ozkul, Z. H., and Baykal, G. (2007) Shear behavior of compacted rubber fiber–clay composite in drained and undrained loading, Journal of Geotechnical and Geoenvironmental Engineering ASCE 7, p.767–781.

DOI: 10.1061/(asce)1090-0241(2007)133:7(767)

[10] Online Compaction handbook, http: /www. concrete-catalog. com/soil_compaction. html, (2010).

[11] Sivakumar Babu, G.L., Vasudevan, A.K. and Haldar, S. (2008) Numerical simulation of fiber-reinforced sand behaviour, Geotexiles and Geomembranes 26, p.181–188.

DOI: 10.1016/j.geotexmem.2007.06.004

[12] Yetimoglu, T. and Salbas, O. (2003) A study on shear strength of sands reinforced with randomly distributed discrete fibers, Geotextiles and Geomembranes 21 (2), p.103–110.

DOI: 10.1016/s0266-1144(03)00003-7

[13] Ziegler, S., Leshchinsky, D., Ling, H. I., and Perry, E. B. (1998) Effect of short polymeric fibers on crack development in clays. Soils and Foundations, Vol. 38, No. 1, pp.247-253.

DOI: 10.3208/sandf.38.247

[14] Zornberg, J. G., Cabral, A. R. and Viratjandr, C. (2004) Behavior of tire shred-sand mixtures, Canadian Geotechnical Journal 41 (2), p.227–241.

DOI: 10.1139/t03-086

[15] Zornberg, J. G. (2002) discrete framework for limit equilibrium analysis of fiber-reinforcement, Geotechnique Journal 52 (8), p.227–241.