Utilization of steel slag for stabilization of a lateritic soil | Blazingprojects Postgraduate Thesis
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Utilization of steel slag for stabilization of a lateritic soil

 

Table Of Contents


Chapter ONE

INTRODUCTION

  • 1.1Introduction
  • 1.2Background of Study
  • 1.3Problem Statement
  • 1.4Objectives of Study
  • 1.5Limitations of Study
  • 1.6Scope of Study
  • 1.7Significance of Study
  • 1.8Structure of the Research
  • 1.9Definition of Terms

Chapter TWO

LITERATURE REVIEW

  • 2.1Overview of Steel Slag
  • 2.2Properties of Steel Slag
  • 2.3Utilization of Steel Slag in Construction
  • 2.4Effects of Steel Slag on Soil Stabilization
  • 2.5Previous Studies on Steel Slag and Soil Stabilization
  • 2.6Environmental Impact of Steel Slag
  • 2.7Comparison with Other Stabilization Materials
  • 2.8Economic Considerations
  • 2.9Challenges in Using Steel Slag for Soil Stabilization
  • 2.10Future Trends in Steel Slag Applications

Chapter THREE

SYSTEM DESIGN AND IMPLEMENTATION

  • 3.1Research Design
  • 3.2Selection of Study Area
  • 3.3Data Collection Methods
  • 3.4Sampling Techniques
  • 3.5Experimental Setup
  • 3.6Testing Procedures
  • 3.7Data Analysis Methods
  • 3.8Ethical Considerations

Chapter FOUR

SYSTEM TESTING AND EVALUATION

  • 4.1Analysis of Soil Characteristics
  • 4.2Evaluation of Steel Slag Properties
  • 4.3Experimental Results of Stabilization
  • 4.4Comparison of Stabilization Effects
  • 4.5Statistical Analysis of Data
  • 4.6Discussion on Optimum Steel Slag Content
  • 4.7Environmental Impact Assessment
  • 4.8Economic Analysis of Steel Slag Utilization

Chapter FIVE

SUMMARY, CONCLUSION AND RECOMMENDATIONS

  • 5.1Summary of Findings
  • 5.2Conclusions
  • 5.3Implications of the Study
  • 5.4Recommendations for Future Research
  • 5.5Contribution to Knowledge

Thesis Abstract

A lateritic soil classified as sandy clay or (CL) and A-7-6 (5) according to Unified Soil Classification System (USCS) and AASHTO classification system respectively,was treated with up to 10% pulverized steel slag (an industrial waste product) by dryweight of soil. Elemental and chemical analysis of the steel slag was determined using x-ray fluorescence spectroscopy. Tests were carried out to determine the index properties, compaction characteristics (maximum dry density, MDD and optimum moisture content, OMC), strength characteristics (California bearing ratio, CBR and unconfined compressive strength, UCS) and permeability of the natural and treated soil. Test results show that Atterberg limits (liquid limit, plastic limit and plasticity index) generally decreased, while specific gravity of soil ” steel slag mixtures increased with higher steel slag content; MDD and OMC increased and decreased, respectively, with higher steel slag content. Generally, CBR and UCS increased up to 8% steel slag treatment of the soil. Permeability of soil ” steel slag mixtures increased with higher steel slag content. Based on laboratory test results, an 8 % optimal stabilization of the A-7-6 soil with steel slag satisfactorily meets the Federal Republic of Nigerian General Specifications (Roads and Bridges) requirement for subgrade materials.



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