Effect of Random Inclusion of Palm Fibers on Strength Characteristics of Shanghai Cohesive Soil

Abstract:

Abstract This paper presents the effect of random inclusion of palm fibers on strength characteristics of Shanghai cohesive soil. Locally available cohesive soil (CL) is used as medium and palm fibers with three lengths (l = 6, 12 and 18 mm) are used as reinforcement. Soil is compacted with standard Proctor’s maximum density with low percentage of reinforcement (0–1% by weight of oven-dried soil). Direct shear tests, unconfined compression tests and CBR tests were conducted on un-reinforced as well as reinforced soil to investigate the strength characteristics of fiber-reinforced soil. The test results reveal that the inclusion of randomly distributed palm fibers in soil increases peak and residual shear strength, unconfined compressive strength and CBR value of soil. It is noticed that the optimum fiber content for achieving maximum strength is 0.6–0.8% of the weight of oven-dried soil for fiber length 12 mm.

• Periodical: Advanced Materials Research (Volume 1096)
• Pages: 572-581
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1096.572
• Online since: April 2015
• Authors: Ji Li Qu*, Dong Xue Zhao, Bei Bei Li
• Keywords: Direct Shear Strength, Palm Fiber, Palm Fiber Content, Palm Fiber Length, Reinforced Soil

References

[1] Athanasopoulos GA. Results of direct shear tests on geotextile reinforced cohesive soil. Geotext Geomembr . 1996, 14(11): 619–644.

DOI: 10.1016/s0266-1144(97)00002-2

[2] Gregory GH , Theoretical shear-strength model of fiber soil composite. In: Proceedings of 99 American society of civil engineering Texas section spring meeting, Longview, Texas, USA, 1999, 1–10.

[3] Heimdahl TC, Drescher A. Elastic anisotropy of tire shreds. J Geotech Geoenv Eng ASCE 1999, 125(5): 383-389.

DOI: 10.1061/(asce)1090-0241(1999)125:5(383)

[4] Izgin M, Wasti Y . Geomembrane–sand interface frictional properties as determined by inclined board and shear box test. Geotext Geomembr 1998, 16(4): 207–219.

DOI: 10.1016/s0266-1144(98)00010-7

[5] Jadhao PD, Nagarnaik PB . Influence of polypropylene fibers on engineering behavior of soil–fly ash mixtures for road construction. Electron J Geotech Eng, vol Bund. C, 2008: 1–11.

DOI: 10.1109/icetet.2008.208

[6] Jiang H, CaiY, Liu J . Engineering properties of soils reinforced by short discrete polypropylene fiber. J Mater Civil Eng ASCE . 2010，22(12): 1315.

DOI: 10.1061/(asce)mt.1943-5533.0000129

[7] KumarP, MehndirattaHC, Chandranarayana S, Singh SP . Effect of randomly distributed fibres on flyash embankments. IE (I) J CV 2005, 86: 113–118.

[8] Li M, Chai SX, Du HP, Wei L. Deviatorstress-strain characters of reinforced lime-soil with wheat straw and parameters of Duncan-Chang model. J Hebei Uni Tech 2011, 40(1): 87-92.

[9] Maher MH, gray DH . Static response of sands reinforced with randomly distributed fibers. J Geotech Eng ASCE 1990, 116(11): 1661-1677.

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

[10] Marandi SM, Bagheripour MH, Rahgozar R, Zare H. Strength and ductility of randomly distributed palm fibers reinforced silty-sand soils. Am J Appl Sci 2008, 5(3): 209–220.

DOI: 10.3844/ajassp.2008.209.220

[11] McGown A, Andrawes KZ, Al-Hasani MM . Effect of inclusion properties on the behavior of sand. Geotechnique 1978, 28(3): 327-346.

DOI: 10.1680/geot.1978.28.3.327

[12] Naeini SA, Sadjadi SM . Effect of waste polymer materials on shear strength of unsaturated clays. Electron J Geotech Eng, 2008, vol 13, Bund. K, 1–12.

[13] Nagrale PP, Chandra , Viladkar MN. Behaviour of flexible pavements resting on fiber reinforced subgrade soils. In: Proceedings of Indian geotech. Conference, Ahmedabad, India, 2005: 185–188.

[14] Prabakar J, Sridhar RS . Effect of random inclusion of sisal fiber on strength behaviour of soil. Constr Build Mater 2002(16): 123–131.

DOI: 10.1016/s0950-0618(02)00008-9

[15] Pradhan PK, Kar RK, Naik A . Effect of random inclusion of Polypropylene fibers on strength characteristics of cohesive soil. Geotech Geol Eng2012, 30: 15-25.

DOI: 10.1007/s10706-011-9445-6

[16] Ramesh HN, Manoj Krishna KV, Mamatha HV. Compaction and strength behavior of lime-coir fiber treated black cotton soil. Geomech Eng2012, 2(1): 19–28.

DOI: 10.12989/gae.2010.2.1.019

[17] RanjanG, VasanRM, CharanHD Mechanism of fibre reinforced soil-a state of art. IndianGeotech J1994, 24(3): 241–262.

[18] RanjanG, VasanRM, Charan HD. Randomly distributed discrete fiber reinforced silt. In: Proceedings of Indian Geotechnical. Conference, Warangal, India. (1994).

[19] Shukla SK, Sivaram N, Das BM . Fundamental concepts of soil reinforcement – an overview. Int J Geotech Eng. 2009, 3(3): 329-342.

[20] Wang P, Chai SX, Wang XY, Wei L, Li M . Analysis of effect factors of heavy compaction test for wheat straw-reinforced saline soil. Rock and Soil Mechanics 2011, 32(2): 448-452.

[21] [Wasti Y, Ozduzgun ZB. Geomembrane-- geotextile interface shear properties as determined by inclined board and direct shear box test. Geotext Geomembr 2001, 19(1): 45–57.

DOI: 10.1016/s0266-1144(00)00002-9

[22] Wei HW, Yu ZH, Zou YS. Shear characteristics of soil reinforced with geosynthetic material. Shuili Xuebao 2005, 36(5): 1-11.

[23] Wei L, Chai SX, Cai HZ, Wang XY, Li M, Yang JW, Physical and mechanical properties of wheat straw and unconfined compressive strength of inshore saline soil reinforced with wheat straw. CHN Civil Eng J . 2010, 43(3): 93-98.

[24] Yetimoglu T, Salbas O . A study on shear strength of sands reinforced with randomly distributed discrete fibers. Geotext Geomembr 2003, 21(2): 103–110.

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

[25] Yu P, Chai SX, Wang XY, Zhang WB, Wei L. Reinforcement effects and engineering application of coast salinized soil reinforced with wheat straw. J Tianjin Institute Urban Cons2010, 16(3): 161-166.

[26] Zornberg JG . Discrete framework for limit equilibrium analysis of reinforced soil. Geotechnique 2002, 52(8): 593–604.

DOI: 10.1680/geot.2002.52.8.593