This research work involves the improvement of the engineering properties of laterite soil by stabilization with quarry dust on fines. The laterite used for this research work will be collected at Osogbo. The sample will be subjected to laboratory tests at the Civil Engineering Department Laboratory Futa, Akura and Osun State Ministry of Works and Transport, Osogbo. The tests will be carried out on both the natural sample and the improved sample and will include: moisture content, specific gravity, grain size distribution, Atterberg’s limits, compaction and California Bearing Ration (CBR) tests both before adding quarry dust and after adding a varying percentage and proportion of quarrying dust. The result of natural sample and improve sample indicate that it could be used to alter and make up for the deficiencies in the particles sizes. If the laterite thereby increasing the potential for use as base material. The result of moisture content is a decrease on the optimum moisture content for laterite cement mixture as the quarry dust content increases. This because the quantity of laterite that contains clayey particles, which requires water for the bonding action is reducing thereby needing less water for hardening . the result on consistency limits decrease in the consisting properties, quarry dust alter, the graduation of the laterite while cement is used to bind the mixture together, which in turn reduces the liquid limit, plastic limit, linear shrinkage of the resulting mixture. The result (CBR) is the clay fraction in the mixture is decreased due to increase in quarry which earlier on was done by the clay fraction at lower percentage of quarry dust on the laterite quarry dust mixtures. The granite in the quarry dust adds strength and rigidity to the mixtures the quantity of the quarry dust increases.              


Contents          Page

Title page i

Dedication ii

Abstract iii

Acknowledgement iv

Certification v

Table of Content vi

List of Tables ix



1.1 Background of the Study

1.2 Statement of the Problem

1.3 Aim and Objectives

1.4 Significance of the Study

1.5 Scope of the Study



2.1 Preamble 

2.2 Soil improvement techniques or stabilization 

2.2.1 Types of improvement techniques or stabilization 

2.2.2 Types of chemical stabilizers  

2.3 Quarry fines or dust 

2.3.1 Components of quarry dust 

2.3.2 Uses of quarry dust 

2.4 Clay 

2.4.1 Groups of clay 

2.4.2 Uses of clay 

2.5 Soil 

2.5.1 Soil profile 

2.5.2 Clay and quarry fines stabilization 

2.6 Review of literature 



3.1 Method of study 

3.2 Collection of sample 

3.3 Preparation of soil sample  

3.4 Laboratory test on soil sample 

3.5 Sieve analysis (BS1377: Part 2, 1990)

3.6 Natural moisture cement test 

3.7 Specific gravity test 

3.8 Atterberg’s limit (Bs1377:Part2, 1990) WAS 

3.8.1 Liquid limit test (BS1377:Part2, 1990)

3.8.2 Plastic limit test (BS1377: Part2, 1990)

3.8.3 Shrinkage limit test (BS1377:part2, 1990)

3.9 Composition test (BS1377:Part 4, 1990)

3.9.1 British standard method of compaction 

3.10 California Bearing ratio (CBR) Test (BS1377:Part 4, 1990) 

3.11 Laboratory tests on the stabilized soil samples 


4.1 Identification of sample 

4.1.1 Oxide composition analysis 

4.2 Additive on consistency limits of cement stabilized

4.3 Additive on optimum moisture content and maximum dry density of cement stabilized  

4.4 Unconfirmed compressive strength of cement stabilized 

4.5 Additive on durability of cement stabilized 

4.6 Additive on the California bearing ratio of cement stabilized 


5.0 Conclusion and recommendation  

5.1 Conclusion 

5.2 Recommendation 



Table 2.1 Description of soil types 

Table 4.2 Test results of natural sample 

Table 4.2.1 Result of chemical analysis of cements and quarry dust 

Table 4.3 Variation of immersion in water on UCS of quarry dust cement mixture 

Table 4.4 Maximum density (MDD) and optimum moisture content (OMC) of sample of cement and quarry dust combination.

Table 4.5 Variation consistency limit with quarry dust in the cement stabilized sample.    




During the last decade, the global demand for indigenous laterite soil has continued to increase. This growing demand has generated interest in the use of red tropical soils for road materials especially in the developing countries. There have been several cases of pavement failures due to poor laterite materials. Hence, it calls for improvement of the engineering properties of laterite soil to improve compressive strength and durability. The red soil which is in abundant supply in Nigeria, poes unique challenges.

The use of this as a road material is encourage by several advantages such as:

(i) The vast abundance of this soil 

(ii) The relative cheapness of this soil 

(iii) Reduction in the foreign exchanges used in buying imported road materials 

(iv) It enhances high rate of road construction

Despite the advantages, the use of this soil as a road material has not been fully utilized. This is because there has not been much research into the ways by which the bearing capacity of the soil can be improved.

The increasing growth in population and the corresponding increase in demand for road construction in Nigeria during the last two decades have generated increased interest in the ways by which the strength properties of laterite can be improved.

1.2 AIM AND OBJECTIVES              

The aim of this project is to assess the effects of quarry dust on the engineering properties of lateritic soil.

The underlying objectives are to:

1. Investigate the natural engineering properties of lateritic soil samples 

2. Study the effort of the lateritic soil on the quarry dust

3. Determine the feasibility of using quarry dust as lateristic soil stabilize

4. Determine the optimum improvement quantity and proportion needed for improving lateritic soil with quarry dust. 


The need for the study is to provide maximum improvement effects of quarry dust on latarite. It is necessary for civil engineering professionals to know the effect of quarry dust additive on latarite.

Also, a lasting solution may be provide to the constant road failure due to poor grade, sub-base and base course materials.


Today, various pavement distresses have been observed on the road due to use of poor lateritic materials for road construction. Researches on the effect of quarry dust (additive) on laterite was only done to a certain extents. 

Time restraint is one of the problems impeding detailed research work on the use of quarry dust additive for improving soil. Research work was done to a certain stage due to lack of sufficient time. 


The scope of the study essentially centered on the use of quarry dust for improving lateriitc soil. 

The study is limited only to analysis of lateritic soil collected from Osogbo town. It involves carrying out various laboratory tests such as Atterbergs limit, Compaction and C. B. R test on the soil before and after the addition of the quarry dust. 




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