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Vol.2 , No. 2, Publication Date: Jul. 21, 2015, Page: 9-15
&description=Many ground improvement techniques have been evolved in the past decade in order to reduce the potential of severity of the weak soils. Out of those techniques, soil stabilization is the most effective technique. This paper presents the results of a laboratory investigation of the use of Locust Bean Waste Ash (LBWA) as a material for stabilization of weak soils. Two types of soils were treated with varying quantities of LBWA under laboratory condition. To determine the effectiveness of LBWA as a stabilizer, general geotechnical soil properties including free swell index, Atterberg limits, specific gravity, grains sizes analyses, moisture density relationship, Unconfined Compressive Strength (UCS) and California Bearing Ratio (CBR) tests have been investigated. X-Ray Diffraction analysis (XRD), Scanning Electron Microscopy (SEM) and X-Ray Fluorescence spectroscopy (XRF) were carried out in order to determine the improvement in strength of the soils at micro level. It’s revealed that the LBWA improved the UCS of two soils samples by 69 % and 124 % for the CI and CH soils respectively during 21 days curing. Results of the XRD, SEM and XRF have shown changes in the peaks of XRD pattern, decreases in the pores in the SEM images and changes in the chemical compositions.&picture=http://www.aascit.org/aascit/decorators/img/journal/920.jpg)
| [1] | Samaila Saleh, Department of Civil Engineering, Hassan Usman Katsina Polytechnic, Katsina State, Nigeria. |
Many ground improvement techniques have been evolved in the past decade in order to reduce the potential of severity of the weak soils. Out of those techniques, soil stabilization is the most effective technique. This paper presents the results of a laboratory investigation of the use of Locust Bean Waste Ash (LBWA) as a material for stabilization of weak soils. Two types of soils were treated with varying quantities of LBWA under laboratory condition. To determine the effectiveness of LBWA as a stabilizer, general geotechnical soil properties including free swell index, Atterberg limits, specific gravity, grains sizes analyses, moisture density relationship, Unconfined Compressive Strength (UCS) and California Bearing Ratio (CBR) tests have been investigated. X-Ray Diffraction analysis (XRD), Scanning Electron Microscopy (SEM) and X-Ray Fluorescence spectroscopy (XRF) were carried out in order to determine the improvement in strength of the soils at micro level. It’s revealed that the LBWA improved the UCS of two soils samples by 69 % and 124 % for the CI and CH soils respectively during 21 days curing. Results of the XRD, SEM and XRF have shown changes in the peaks of XRD pattern, decreases in the pores in the SEM images and changes in the chemical compositions.
Keywords
Soil Stabilization, UCS, XRD, SEM, XRF
Reference
| [01] | Yoder, E. J. and Witczak, M. W. (2012), “Principles of Pavement Design”, Wiley India Pvt Ltd New Delhi India, 2ndedition, pp 300. |
| [02] | Andrew, Y. A. and Yinusa, A. J. (2012), “Effect of Locust bean waste ash on Strength Properties of Weak Soils”, Assumption University of Thailand Journal of Tech, Vol. 16, No.1, pp.27-34. |
| [03] | Andrew, Y. A. Yinusa, A. J. and Stephen S. K. (2013), “Effect of Locust bean waste ash on Compaction Characteristics of Weak Sub Grade Soils”, International Journal of Engineering Science Invention, Vol. 16, No.1, pp. 25-30. |
| [04] | Osinubi1, K. J. Oyelakin, M. A. and Eberemu, A. O. (2011), “Improvement of Black Cotton Soil with Ordinary Portland Cement - Locust Bean Waste Ash Blend”, Electronic Journal of Geotechnical Engineering, Vol. 16, Bound F, pp. 619-627. |
| [05] | Osinubi, K. J. and Oyelakin, M. A. (2012), “Optimizing Soil-cement-ash Stabilization Mix for Maximum Compressive Strength: A Case Study of the Tropical Clay Sub-base Material Stabilized with Cement-Locust Bean Waste Ash”,4th West Africa Built Environment Research (WABER) Conference, July 2012, Abuja, Nigeria, pp. 1207-1218. |
| [06] | Nwadiogbu, P.C. and Salahdeen, A.B. (2014), “Potential of Lime on Modified Lateritic Soil Using Locust Bean Waste Ash as Admixture”, Journal of Mechanical and Civil Engineering Vol. 1, No.1, pp.69-73. |
| [07] | IS 2720 Part XL: 1977, “Method of test for soils, determination of free swell index of soil”. |
| [08] | IS 2720 Part I: 1983, “Method for soil preparation of dry soil sample for various tests”. |
| [09] | IS 2720 Part III: 1980, “Method of test for soils, determination of specific gravity for fine, medium and course grained soils”. |
| [10] | IS 2720 Part IV: 1985, “Method of test for soils, grain size analysis”. |
| [11] | IS 2720 Part V: 1985 “Method of test for soils, determination of liquid and plastic limits”. |
| [12] | IS 2720 Part VII:1980, “Method of test for soils, determination of water content dry density relationship using light compaction”. |
| [13] | IS 2720 Part XVI: 1987, “Method of test for soils, laboratory determination of CBR”. |
| [14] | IS: 1498: 1970, “Classification and Identification of soils for general engineering purposes”. |
