Structural Characteristics of Laterite Soil Treated by SH-85 and TX-85 (Non-Traditional) Stabilizers

Soil stabilization is the process of improving the physical and engineering properties of a soil to obtain some predetermined targets. Nowadays, among the different methods of soil improvement, using chemical additives for soil stabilization in order to increase soil strength parameters and loading capacity getting more attention. The chemical stabilization technology is a chemically modified method that can stabilize or reinforce those soils with weak engineering properties. Various types of chemical additives (in liquid and powder form) are actively marketed by a number of companies. The stabilizing mechanisms of these products are not fully understood, and their proprietary chemical composition makes it very difficult to evaluate the stabilizing mechanisms and predict their performance. This research was carried out in an attempt to identify the time-dependent reactions between laterite soil and two type of nontraditional additives (TX-85, SH-85) by macroand micro structure study. The employed tests were unconfined compression strength (UCS), Atterberg limits, pH, and scanning electron microscopy (SEM). Based on the results it was found that the both of additives can increase the laterite soil strength, as the increment for SH-85 and TX85 is around 5 and 4 times more than untreated soil respectively, which is gained in first 7 days of curing. Also the results of SEM showed that the porosity of untreated soil filled by the new component, so the treatment with SH-85 and TX-85 contributed to denser soil fabric.

[1]  James K. Mitchell,et al.  Fundamentals of soil behavior , 1976 .

[2]  M. D. Gidigasu.  Mode of formation and geotechnical characteristics of laterite materials of Ghana in relation to soil forming factors , 1972 .

[3]  Jeb S. Tingle,et al.  Stabilization of Clay Soils with Nontraditional Additives , 2003 .

[4]  M. Rahmat,et al.  Sustainable stabilisation of the Lower Oxford Clay by non-traditional binder , 2011 .

[5]  Syafalni,et al.  Treatment of landfill leachate by using lateritic soil as a natural coagulant. , 2012, Journal of environmental management.

[6]  N. Yi,et al.  The Experimental Study on Strength of Subgrade Soil Treated with Liquid Stabilizer , 2011 .

[7]  D. T. Davidson,et al.  LIME FIXATION IN CLAYEY SOILS , 1960 .

[8]  Abebaw Zelalem,et al.  Basic Engineering Properties of Lateritic Soils Found in Nejo – Mendi Road Construction Area, Welega , 2005 .

[9]  K. Hossain,et al.  Some engineering properties of stabilized clayey soils incorporating natural pozzolans and industrial wastes , 2011 .

[10]  Alan F. Rauch,et al.  Measured Effects of Liquid Soil Stabilizers on Engineering Properties of Clay , 2002 .

[11]  D E Scholen,et al.  STABILIZER MECHANISMS IN NONSTANDARD STABILIZERS , 1995 .

[12]  Alan F. Rauch,et al.  Mechanisms of Soil Stabilization with Liquid Ionic Stabilizer , 2001 .

[13]  M. Rahman,et al.  The potentials of some stabilizers for the use of lateritic soil in construction , 1986 .

[14]  Aminaton Marto,et al.  Stabilization of laterite soil using GKS soil stabilizer , 2013 .

[15]  Hussain A. Khalid,et al.  Quantification of the properties of enzyme treated and untreated incinerator bottom ash waste used as road foundation , 2011 .

[16]  Amin Eisazadeh,et al.  Characterization of phosphoric acid- and lime-stabilized tropical lateritic clay , 2011 .

[17]  C. Mahanta,et al.  Leaching characteristics of residual lateritic soils stabilised with fly ash and lime for geotechnical applications. , 2007, Waste management.

[18]  F. C. Townsend,et al.  Geotechnical Characteristics of Residual Soils , 1985 .